Are you considering a new flat roof for your home or commercial building? TPO (thermoplastic polyolefin) roofing systems are a popular choice in the industry. But what is it that sets TPO apart from other roofing materials? This article will explore TPO roofing from its composition to the installation process and compare it to other roofing materials. By the end, you’ll understand why TPO roofing is a top choice for flat-roof commercial buildings and whether it’s the right roofing system for your project.

Short Summary

• TPO roofing systems are a cost-effective and reliable option for commercial roofing and flat-roof properties, offering durability, heat reflection, and energy savings.
• Professional installation of a TPO roofing system is essential to its performance and longevity. Costs vary depending on material & labor factors but typically range from $6.00 to $14.00 per square foot for a complete TPO roof replacement.
• Ripped seams, punctured TPO, and pooling water lead to TPO repairs, but regular maintenance prevents a shortened lifespan.
• Before settling on a roofer to install or repair your TPO, ensure they have sufficient experience, licensing, references, and can provide a warranty.

Understanding TPO Roofing Systems

TPO roofing systems are a single-ply roofing membrane made with synthetic material and reinforcing scrim that provides a dependable and cost-effective roofing solution for commercial buildings and flat-roof properties.

Its UV resistance, heat-reflective properties, and flexibility make it popular among roofers, commercial contractors, and property owners.

TPO roofing is a relatively new addition to the roofing materials market, with about 33 years in existence. Still, it has already gained a reputation for its performance, especially on flat roofs.

Composition and Features

TPO is a single-ply three-layered membrane composed of a TPO polymer base, a polyester-reinforced scrim, and a TPO compounded top ply. Thermoplastic, in layman’s terms, means it becomes plastic when heated and hardens upon cooling.

TPO roofing offers superior stability and resistance to shrinking compared to EPDM, another popular thermoplastic membrane roofing material. An EPDM membrane can alligator, while TPO is less likely to shrink over time, resulting in a long-lasting, reliable system.

Furthermore, TPO roofing provides significant energy cost savings due to its highly reflective properties, which deflect the sun’s UV rays away from the building, keeping the interior cooler and reducing energy consumption.

Note: Geographic regions higher in altitude with high UV levels adversely affect the TPO and are often the number one problem TPO systems face in these regions.

Types of TPO Roofing Membranes and Their Thickness

TPO roofing membrane is typically sold in 45 mil, 60 mil, and 90 mil thicknesses, which is about the thickness of a heavy-duty trash bag. A thicker roof membrane should be considered for roofs that experience higher traffic (i.e., walkways or technicians routinely servicing rooftop units).

Two primary types of thermoplastic membrane roofing exist: Polyvinyl chloride (PVC) and thermoplastic polyolefin (TPO). TPO membranes have three layers, making them a highly durable and efficient choice for commercial buildings.

The TPO single-ply roofing membrane has gained popularity due to its energy advantages and durability. With its ability to resist heat and most UV rays, TPO roofing is an eco-friendly option that can yield significant energy savings for building owners.

TPO Roofing Installation Process

Following the specified installation process for TPO roofing is crucial to its performance and longevity. A high-level overview of installing TPO involves preparing the roof surface and substrate, choosing the proper insulation and thickness, attaching the membrane, and using a hot-air gun to weld the seams.

The heat-welded seams create a watertight seal that prevents leaks and protects your building’s interior. Hiring an experienced contractor to install TPO roofing is highly recommended due to the specialized tools and expertise required for a successful installation.

The layers of a complete, fully adhered TPO roofing system are as follows:

1. TPO membrane
2. Bonding adhesive (if fully adhered)
3. Cover board (recommended on roofs with regular foot traffic)
4. Insulation
5. Vapor barrier (optional, but roofs over concrete decking should always have a vapor barrier)
6. Underlayment (typically installed when an improved fire-resistive rating is required)
7. Roof decking

Preparing the Roof Surface

Before installing a TPO roof, the existing substrate must be appropriately prepared to ensure a successful installation. This involves cleaning, repairing, and priming the substrate to create an even surface for optimal adhesion. A flat surface is essential during installation to ensure proper adhesion of the TPO membrane and prevent water damage.

Priming the substrate is a crucial step in the installation process. It involves applying a primer to the substrate, ensuring optimal adhesion. Once the surface is prepared, and the insulation foam is installed, the TPO membrane can be attached securely to the roof deck, providing a durable and energy-efficient roofing system.

Insulation and Mechanical vs Adhered Attachment Methods

Insulation sheet foam is the component that dictates energy efficiency and must be installed to guarantee a satisfactory level of heating and cooling efficiency within the property. Several insulation options are available for TPO roofing, such as foam board or batt insulation. The type of insulation selected depends on the existing roof type, necessary insulation levels, as well as the specific needs of your building.

The TPO membrane can be mechanically attached using fasteners or attached using a fully adhered adhesive system. In mechanically fastened systems, the membrane is attached in the seams using fasteners and plates or battens. Fully adhered systems are completely bonded to the substrate beneath, creating a tighter and more secure looking TPO membrane. The bonding adhesives can’t be applied below certain temperatures. However, the adhesive in fully adhered systems evenly distributes the uplift pressure on the membrane and substrate, rather than focusing it on fastening points in the seams as the mechanically attached method does. This is why fully adhered systems typically have superior wind uplift results. Conversely, mechanically attached systems are often more cost-effective and have fewer installation restrictions. Each method offers advantages and is chosen based on factors such as the building’s structure, climate, and budget.

Regardless of the attachment method used, proper installation is crucial to ensure the longevity and performance of your TPO roofing system.

Comparing TPO Roofing to Other Roofing Materials

While TPO roofing is more expensive than some roofing materials, it offers several advantages that make it a popular choice for commercial buildings. Its highly reflective surface helps reduce energy costs by deflecting the sun’s UV rays away from the building. TPO is more energy efficient and durable than other materials like EPDM roofing.

However, TPO roofing also has some disadvantages compared to other materials. For instance, its lifespan is typically shorter than some roofing materials, lasting up to 25 years when installed correctly. Additionally, its quality may not be as certain as other roofing types since it is still a relatively new material.

Advantages of TPO Roofing

One of the main advantages of TPO roofing is its energy efficiency. The reflective properties of the TPO membrane help lower energy expenses by deflecting the sun’s UV rays away from the building, keeping the interior cooler, and reducing the need for air conditioning.

Secondly, TPO roofing is known for its resistance to mold and some puncturing, contributing to its durability and long-lasting performance.

Another advantage of TPO roofing is its eco-friendliness. Since it is a single-ply roofing membrane, it requires fewer manufacturing materials, resulting in less waste during production. Moreover, TPO material is recyclable, making it a more sustainable choice than other roofing materials that may end up in landfills.

Disadvantages of TPO Roofing

Despite its many advantages, TPO roofing does have some drawbacks. As mentioned earlier, the lifespan of TPO roofing is shorter when not well maintained compared to other materials like metal. TPO typically lasts from 15-25 years when installed correctly.

Additionally, TPO roofing membranes typically come in small-width rolls, resulting in seams every six to eight feet. These membranes experience contractions and expansions, and the seams are often where the membranes become loose, enabling water leaks.

In addition to more seams, TPO roofing membranes can have varying qualities depending on the manufacturer. Some manufacturers produce superior products, while others may construct lower-quality membranes. It is essential not to get swayed by price only but to choose a manufacturer with a long history and better reputation.

Lastly, TPO systems installed in high-altitude regions with high UV ray levels encounter a significant problem; as these conditions age the TPO quicker. Also, UV ray overexposure degrades the adhesives that attach the membrane and insulation to the substrate, causing the seams to separate and lose the watertight seal.

TPO Roofing Costs and Factors Affecting Pricing

TPO roofing costs can be broken down into two main components: materials and labor. An all-inclusive removal and installation of a TPO roofing system typically range from $6 to $14 per square foot, making it a competitive option. This includes material costs of $1.50 to $4.50 per square foot, labor costs of $3.50 to $7.50 per square foot, and the remaining $1.00 to $2.00 per square foot cost covers the removal and disposal of the current roofing material.

Several factors can affect your roof replacement and pricing of TPO, including hourly contractor charges, roof removal costs, climate, and accessibility. A roofing cost calculator is helpful, and it is essential to consider these factors when estimating the overall cost of your TPO roofing project, as they can significantly impact the final price.

Material Costs

The material costs associated with TPO roofing range from $1.50 to $4.50 per square foot for the TPO membrane system, while insulation costs vary. Commodity prices and supply chain dynamics impact TPO roofing material prices, so the timing of your project is a consideration and factor in your material cost.

Flashing is another essential component of TPO roofing, as it helps prevent leaks around seams and penetrations such as pipes, drains, chimneys, and skylights. The cost of flashing will depend on the specific requirements of your building and the complexity of the installation, so it’s essential to factor this in when estimating your overall TPO roofing costs.

Labor Costs and Installation Factors

Labor costs for TPO roofing typically range from $3.50 to $7.50 per square foot, depending on factors such as hourly contractor charge, climate, and accessibility. Considering these factors when estimating the overall TPO roofing cost is essential, as they can significantly impact the final price.

Roof removal cost is the third factor impacting your roof replacement and TPO installation. Typically $1.00 to $2.00 per square foot covers the removal and disposal of the current roofing system. Sometimes, this cost is just factored into labor and not itemized out separately.

However, when hiring a TPO roofing contractor, it’s crucial to obtain multiple quotes and compare labor costs and installation factors each contractor provides. This will ensure that you get the best value for your investment and select a contractor who can provide a high-quality installation at a competitive price.

Maintaining and Repairing Your TPO Roof

The first step in maintaining and repairing your TPO roof system is a regular and proactive inspection program. Your TPO needs regular maintenance and repairs to prevent water damage, preserve its integrity, and ensure a long-lasting roofing system. Maintaining your TPO roof includes cleaning debris, washing it with a light detergent, and inspecting it for damage to the membrane.

Commercial roofing companies offer maintenance plans to accommodate these needs. It is recommended to enlist the services of a professional roofer, as the maintenance professional will have the expertise and tools necessary to identify and address all issues necessary to preserve your TPO roofing system.

Regular Maintenance Tips

To maintain your TPO system, you must identify issues before they become significant problems that require costly repairs. Thus part of the technician’s routine is to regularly inspect for cracks, tears, or punctures in the membrane.

Additionally, removing debris and washing your TPO roof with a low-power pressure washer, gentle cleaner, and a soft-bristle broom is advised. This will help keep your TPO roofing system clean and free from dirt, which can cause damage over a prolonged period.

Furthermore, ensuring proper drainage will help prevent water from pooling on the surface and causing damage to your TPO membrane. Dysfunctional scuppers and clogged gutters will prevent water from escaping and cause pools of water on your TPO.

Note: Do not overlook routine maintenance, as a punctured or dirty TPO, compromised seams, degrading adhesion, or a TPO membrane with continual standing water will certainly have a shorter lifespan.

Common Repair Issues and Solutions

Common repair issues for TPO roofs include degrading seams, failed flashings, or a punctured membrane. A TPO patch is a common fix for areas that have been punctured or cracked. In some cases, small hot air welders can be used to make minor repairs to the seams of your TPO roofing.

Flashing on parapet walls and roof edges often needs re-flashing. Likewise, mechanical fastener issues and malfunctioning roof drains and scuppers call for repairs and immediate attention.

When TPO shows signs of severe deterioration or cannot be patched on its top surface, underside patch placement, and reverse-side welding can temporarily prolong its lifespan. However, eventually, a new roof will be necessary.

If you notice water entering your building or suspect your TPO system is damaged, contacting a professional roofer is essential. They can assess the situation, identify the problem, and recommend the best course of action to repair your TPO roof and protect your property from further damage.

Hiring a Professional TPO Roofing Contractor

Due to the specialized tools and expertise required for TPO roofing installation, hiring a professional TPO roofing contractor is highly recommended. They will ensure that your TPO roofing system is installed correctly and provides the desired performance and longevity for your commercial building.

When selecting a TPO roofing contractor, evaluating their experience, certifications, references, and warranties is essential. This will help you choose a reliable and qualified contractor for your roofing project and ensure that your TPO roofing system is installed correctly and efficiently.

Evaluating Contractors

To evaluate TPO roofing contractors, obtaining multiple quotes and comparing their expertise, certifications, references, and warranties is critical. This will help you select a reliable and qualified contractor for your roofing project and ensure that your TPO roofing system is installed correctly and efficiently.

Additionally, researching online customer reviews and ratings can provide valuable insight into the contractor’s reputation and the quality of their work. By evaluating potential TPO roofing contractors, including checking their membership with the National Roofing Contractors Association, you can feel confident in your decision and trust that your TPO roofing system will be installed to the highest standards.

Questions to Ask Before Hiring

Before hiring a TPO roofing contractor, you should ask several questions to ensure you select the best person for the job. These questions may include their experience with TPO roofing, certifications, pricing, warranties, and safety precautions.

By asking these questions and carefully considering the responses, you can make an informed decision about which TPO roofing contractor is the best fit for your project. This will help ensure that your TPO roofing system is installed correctly, providing you with a durable, energy-efficient, and long-lasting roofing solution for your commercial building.

Summary

In conclusion, TPO roofing systems offer a durable, energy-efficient, and eco-friendly solution for commercial buildings. Its unique composition and installation process makes it popular among building owners and roofing contractors. While TPO roofing may be more expensive than other roofing materials, its advantages, such as energy efficiency, durability, and recyclability, make it a worthwhile investment.

By performing regular maintenance and repairs, hiring a professional TPO roofing contractor, and carefully evaluating your options, you can ensure that your TPO roofing system provides the desired performance and longevity for your commercial building. So, if you’re considering a new roof for your property, TPO roofing may be the ideal choice to meet your needs and support your commitment to sustainability.

Frequently Asked Questions

What is TPO roofing?

TPO (Thermoplastic Polyolefin) roofing is a single-ply membrane composed of 3 layers: a TPO polymer base, a polyester-reinforced scrim, and a TPO compounded top ply. It was introduced in the early 90s and is used to create a watertight covering to protect the interior of a building.

TPO provides durable and cost-effective protection from the elements for many types of buildings.

How long does a TPO roof last?

A TPO roof can last up to 20 years with proper maintenance. TPO roofing material is thermoplastic polyolefin – a blend of ethylene propylene rubber and polypropylene components fused and reinforced with polyester fabric.

Well-cared-for TPO roofs can provide many years of protection from the elements.

Which is better, TPO or EPDM roofing?

When choosing the best roofing material for your project, deciding between TPO and EPDM can be difficult. Both offer significant advantages, so it’s essential to consider their respective features and the needs of your particular project to determine the better option for you.

TPO is a thermoplastic membrane that is highly resistant to UV radiation, making it an excellent choice for areas with high levels of sunlight. It is also highly resistant to punctures and tears, making it a great choice.

Why is TPO traditionally used for roofing?

TPO roofing material is a single-ply membrane designed to protect your commercial building from the elements. It’s traditionally used for roofing because of its durability and strength, making it ideal for harsh weather conditions. Its reflective surface also helps with energy efficiency.

What is TPO roofing?

TPO roofing is a durable single-ply membrane system consisting of three layers – a TPO polymer base, a polyester-reinforced scrim, and a TPO compounded top ply – introduced in the early 90s. It provides a reliable, watertight covering that can stand up to the elements and help protect the interior of a building.

TPO roofing is an excellent choice for many commercial and flat-roof residential buildings, as it is highly resistant to moderate UV radiation and extreme temperatures. It is also easy to install and maintain, making it a cost-effective solution for many roofing needs.

See TPO Roofing: Cost, Material, Repair & Installation Guide for the first version of this content.

Avoid making uninformed decisions about your roofing system and its components. When it comes time to replace your roofing system, quote it confidently and get your questions answered.

atlantacommercialroofingcontractors.com gathered information to help you define TPO roofing,  access further information about its installation, and address some of the questions associated with a TPO roofing systems.

What is a TPO Membrane

Made from thermoplastic polyolefin, TPO is a single-ply roofing membrane that is currently one of the fastest-growing commercial/residential systems in the roofing market. TPO roofing systems are composed of a single layer of synthetics and reinforcing scrim used to cover flat roofs.

Where did TPO Roofing Originate?

TPO membranes can be traced back to Europe in 1991, under the name FPO (Flexible Polyolefin). Also, in the early ‘90s, TPO roofing came to the US market. In subsequent years, TPO became a popular selection because of its durability, and energy efficiency.

What Are Common TPO Roofing Problems

Punctures – While this single-ply roofing system can be walked on and is both flexible and lightweight, the membrane itself can easily suffer punctures.

With commercial roofs, one of the more common problems is a higher volume of foot traffic when compared to other types of buildings or roofing structures. Unless reinforced, this single-ply membrane roofing system won’t have a hard-top/protective layer that is meant to protect the layer of synthetic rubber from things like gravel, dropped/misplaced tools, or loose screws.

TPO roofing problems like this often find those materials pushed into or through the rubber membrane, breaking or tearing it. This leaves the roofing system more vulnerable to leaks and failure as it ages.

Degrading Adhesives – Being exposed to the elements 24 hours a day, 7 days a week, leads to roofing problems in specific components, if not the roofing system in its entirety.

Overexposure can occur when UV rays degrade the adhesives that attach the membrane and insulation to the substrate. Those adhesives are also used to seal the seams of the membranes together, producing the waterproof seal that keeps your roof safe in even some of the harshest of weather conditions. Without that seal, your roofing system can fail.

The following are also commonly reported problems and in most cases may be traced back to the roofing system’s installation:

• Roofing substrate poorly prepared
• The roof slope is too low, resulting in pooling water or poor runoff. (which degrades materials faster)
• Improperly installed insulation, resulting in bulges
• Seam separation/failure from improper welding, allowing water penetration
• Torn membrane or punctures from debris striking the roof

Find more information about TPO roofing systems at atlantacommercialroofingcontractors.com/tpo-roofing-system-explained/

TPO Roofing System Lifespan

TPO Roofing îs a relative newcomer on the roofing market. With a traceable history of just over 30 years, multiple material improvements, and continuous system betterments, a definitive lifespan cannot yet be determined.

Note: All roofing systems can benefit from a proactive maintenance program. For TPO, these benefits include:

• Early problem detection
• Preemptive repairs
• Storm/Severe Weather damage inspections and repair

These benefits translate to a longer lifespan with fewer occurrences of material or component failure.

Frequently Asked Questions

Which is better, TPO or EPDM?
TPO. EPDM is more likely to shrink or alligator, causing a variety of problems on your roof

Can you walk on TPO roofing?
Yes. However, walkways and Paths to equipment should be reenforced for this increased traffic.

Is TPO roof glued down?
A TPO roof can be installed fully-adhered (glued down), mechanically-attached or ballasted. When a TPO system is fully-adhered, it means that the membrane was glued to the substrate using a special adhesive that chemically bonds with the membrane.

How do PVC and TPO Roofing compare?
These two similar roofing systems have more in common than what divides them, as demonstrated at atlantacommercialroofingcontractors.com/difference-between-pvc-tpo-roofing-systems/

TPO Roofing System Installation and Maintenance

In this article, you discovered what TPO roofing is, revealed further information about its components and installation, and answered some frequently asked questions about it.

Knowing how TPO roofing compares to other roofing systems will help you make well-informed decisions when determining which roofing system to install on your structure.

Not knowing how roofing systems compare to each other can lead to poor decisions when selecting a roof to protect your building and business.

Sources:
firestonebpco.com/us-en/roofing/tpo-roofing-systems
vinylroofs.org
citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.11.78&rep=rep1&type=pdf

See What Is TPO Roofing for the first version of this content.

Without knowing the pros and cons of TPO and PVC, you risk buying a roofing system that’s not suitable for your specific property needs. Even though the membranes may appear to be the same, PVC and TPO roofing systems are quite different.

atlantacommercialroofingcontractors.com gathered essential information about the composition and differences between PVC and TPO roofing systems.

PVC vs. TPO – What Is Their Composition?

Looking at a completed PVC or TPO installation, you may think the material looks identical. Still, the two are very different in composition.

PVC (Polyvinyl Chloride) – This membrane consists of two PVC plies that sandwich a polyester reinforcement sheet. Included in the manufacturing of PVC plies are:

• Ultra-violet light inhibitors
• Color pigments
• Fiberglass or polyester reinforcement
• Plasticizers (for plasticity and flexibility)
• Biocides (help deter mold, bacteria, algae, rodents, and insects)

Hot-air welded seams help PVC roofing remain watertight under a variety of severe weather conditions.

TPO (Thermoplastic Polyolefin) – To produce the TPO membrane, manufacturers will polymerize polypropylene and ethylene-propylene rubber. Like PVC, two TPO plies sandwich a polyester reinforcement sheet. The following are used in the production of TPO plies:

• Ultra-violet light inhibitors
• Color pigments
• Fiberglass
• Talc

Due to the composition of the membrane, plasticizers are not required for its plasticity or flexibility. When designed using the right processes, they perform very well, even in harsh conditions.

Like PVC, TPO employs hot-air welded seams to stay watertight during severe weather and pooling of water. To learn more about TPO roofing system, visit atlantacommercialroofingcontractors.com/tpo-roofing-system-explained/

PVC vs. TPO – Performance Comparison

The following chart will help you compare the performance of TPO and PVC roofing materials and determine the best selection for your new commercial roofing system installation:

In addition to the information above, the following should be taken into consideration:

TPO presents superior results for tear and break strengths, while PVC outperforms in chemical resistance, fire resistance, and overall cost. Restaurants or buildings with grease traps on the roof would be better served by a PVC roofing system.

When it comes to durability, the thickness of TPO and PVC membranes influence their lifespan and pricing significantly. It is strongly recommended that the thickest membrane available (within your budget constraints) be utilized.

Tip: Do not base your roofing system selection on price alone. If you choose to install TPO products, have your contractor provide information about the manufacturer. Work with contractors whose manufacturers have 20 years or more in TPO production and offer a clear warranty policy on their products.

PVC vs. TPO – Warranties

For the purchase of a PVC or TPO roofing system installation, there will be two warranties to take into consideration before closing any deal. First is the manufacturer’s warranty. This warranty will typically cover any defects in the manufacturing of the roofing membrane.

The second warranty is provided by the roofing contractor to cover his workmanship. This warranty should include what items are covered and what actions will void the warranty.

Since the coverage and duration of these warranties depend on the contractor and the roofing system manufacturer, this is on a case-by-case scenario and there is no clear advantage for TPO or PVC.

Tip: Only agree to the installation of a TPO or PVC roofing system once you are satisfied with the coverages promised by the manufacturer’s and contractor’s warranties. Upon completion of the installation, ensure that your warranty certificates and descriptions are kept with your roofing documentation.

PVC and TPO Roof Differences

In this article, you discovered the differences in composition, performance, and durability of TPO and PVC roofing systems.

By knowing how TPO membranes differ from PVC membranes, you can make informed decisions regarding the appropriate roofing system for your commercial building.

Without considering your building’s needs and which roofing system best meets them, you risk making a capital investment on a roof that will likely fail prematurely.

Sources:
astm.org/SNEWS/AUGUST_2003/obeoli_aug03.html
everybodyneedsaroof.com/thermoplastic-membranes
firestonebpco.com/us-en/roofing/tpo-roofing-systems
vinylroofs.org/
rci-online.org/wp-content/uploads/2003-09-whelan.pdf

See The Difference Between PVC and TPO Roofing Systems for the first version of this content.

Avoid investing your money in the wrong roofing system. Each roofing system has advantages and disadvantages you should be aware of before making this capital investment.

atlantacommercialroofingcontractors.com gathered detailed information about three of the common commercial roofing systems, and their benefits and disadvantages.

Metal Roofing System Pros and Cons

Metal roofing systems are built to last, and depending on your region and property type, could be the only roofing system your commercial building may ever need. Here are some of the pros and cons to consider before committing to a metal roof.

Metal roofing system pros:

Longevity – Correctly installed and maintained, metal roofing can last as long as the building it covers (70 years or more).

Weather Resistant – Metal roofing It is highly resistant to rainwater, rot, mold, mildew, and can withstand immense pressure from accumulated snowfall.

Product Warranty – While warranties may vary, some companies will cover a metal roof installation for up to 50 years.

Fire Resistant – Metal roofing materials are noncombustible and resist fire.

Some metal roofing cons include:

Cost – Probably the most significant disadvantage, a metal roofing system can cost anywhere from $900 – $1,200 per 100 sq. feet.*

When the durability and longevity of metal roofing are factored in, the investment is more than justified. As previously stated, a properly installed and maintained metal roofing system can last as long as the structure below it.

Denting – When the necessity arises to service chimneys, satellite dishes, HVAC units, or generators, the serviceman or technician may dent your roof.

Likewise, if the gauge (thickness) of the roofing is too low in a region prone to hail storms, severe denting can occur during violent hail storms.

Noise – Metal roofing systems without sufficient insulation can get loud during rain or hail storms.

If you’re leaning towards a metal roof, read Metal Roofing Advantages and Disadvantages for a more in-depth article.

Built-Up Roofing System Pros and Cons

For more than a century, built-up roofing (BUR) systems have been a popular choice in the U.S. for commercial roofing systems.

This system is comprised of alternating layers of tar or asphalt and support materials layered on the roof, with the final one consisting of stone or gravel.

Built-up roofing system pros:

Longevity – A BUR system can last 30 to 40 years when properly installed and maintained.

Waterproof – There are no joints or seams; the roofing system is one continuous surface.

Low-Maintenance – After installation, minimal attention and servicing are required, as BUR systems are installed in large sheets with a low profile as compared to other roofing systems.

Cost – Installation and material costs can range between $500 to $800 per 100 sq. feet* or more depending on the number of layers and materials you choose.

UV Protection – BUR systems provide excellent ultra-violet protection, which reduces roof temperatures and prevents extreme temperature fluctuations within the building. UV protection also prevents the drying out and break down of roofing system materials.

Some built-up roofing cons include:

Safety – During installation, hazardous fumes and vapors are present.

Weight – BUR systems add significant weight to a building’s structure.

Learn more about commercial roof load-bearing capacity by reading atlantacommercialroofingcontractors.com/what-is-commercial-roof-load-why-you-need-to-know/

TPO Roofing System Pros and Cons

Thermoplastic Polyolefin (TPO) is a single-ply roofing system fully adhered and mechanically attached or ballasted to a roof.

TPO roofing system pros:

Longevity – TPO roofing has a (current) life expectancy of about 30 years. However, this roofing system has only been available for 30 years, and with significant improvements over the decades, TPO may last much longer.

Wind Resistant – When properly installed, TPO roofing systems receive high wind ratings.

Installation – TPO roofing system installation, when completed by an experienced roofing company, is fast, clean, and practically nonintrusive.

TPO roofing cons include:

Pooling Water – When the roof slope is too low, water may pool and cause an acceleration of the material’s degradation.

Cost – Installation and material costs can range between $600 to $1,400 per 100 sq. feet* or more depending on tear-off costs and selected materials.

Seam Separation – Poor seam welding can result in seam separation, allowing water into the structure.

Read more about TPO roofing systems at atlantacommercialroofingcontractors.com/tpo-roofing-system-explained/

Commercial Roofing Types

Before committing thousands of dollars for a new roof, take the time to familiarize yourself with different types of available roofing systems for your building.

In this article, you discovered information about 3 commercial roofing system options, their durability, price ranges, and other essential pros and cons.

Avoid making a poor decision when selecting a roofing system for your commercial building. Learn as much as you can about available commercial roofing systems in your area, and your local roofers,

*Costs related to roofing materials, tear-offs, and installations mentioned in this article are approximations NOT QUOTES. Visit atlantacommercialroofingcontractors.com for further information.

Sources:
everybodyneedsaroof.com/thermoplastic-membranes
asphaltroofing.org/bur-multi-ply-built-up-roofing/
cchrc.org/sites/default/files/docs/metal_roofing.pdf

See Pros and Cons for 3 Types of Commercial Roofing Systems for the first version of this content.

The materials, and equipment found on a commercial roof are susceptible to the elements, leaks and costly damage. Taking measures to fix and prevent that damage, can save a ton of money and dramatically extend the life of your commercial roofing system.

atlantacommercialroofingcontractors.com gathered information about 3 common commercial roof leak causes, solutions, and how to prevent them altogether.

Commercial Roofing Penetration and Leaks

Industry-wide, the most common roofing complaints are for leaking roofing systems. Commercial roof penetrations are often the culprit and may include vent pipes, drains, wiring connections, or any related equipment that creates an opening or hole in the roofing system.

Cause – Leaks generally occur around the penetration or joint, and when its waterproofing (flashing, pitch pans, etc.) are poorly or improperly installed. However, severe weather events and nuisance wildlife can compromise the integrity of the installation.

Solution – After discovering which penetration is causing the leak, one of the following should be repaired or replaced:

• Flashing – The waterproof layer of material keeping water from leaking through joints, vents, or appliance connection points. Read more about Types and Purpose of Commercial Roof Flashing at atlantacommercialroofingcontractors.com/types-purpose-flashing/
• Pitch Pans – Used as sealants around rooftop penetrations and pipes exiting through a roof.

Depending on the roofing system, the combination of a pitch pan and flashing may be necessary to seal the penetration.

Make sure to verify that the object penetrating the roofing system is firmly held in place. The slightest vibration or movement over time will cancel out even the best waterproofing, allowing water into your property.

Poor Commercial Roofing System Installation (Bad Contractor)

If your roofing system was poorly installed, you can expect to experience everything from minor/major leaks, and partial or complete failure if your contractor neglected quality control checks, manufacturers guidelines, or necessary procedures.

Cause – Poor commercial roofing installations are generally the result of inexperienced, unqualified, or negligent contractors who cut corners, rush through installations, and neglect manufacturers and general safety guidelines.

Solution – Use strict guidelines when vetting roofing contractors to repair or replace a roofing system. To qualify a roofing company, do the following:

• Check the company’s references.
• Visit locations of their previous installations.
• Read through their online reviews.
• Search for complaints and resolutions through the Better Business Bureau at bbb.org.
• Verify the company’s license to operate in your city.
• Request proof of insurance coverage.
• (Once contracted) Request copies of all permits attained to allow the lawful repair or replacement of your roofing system.
• Request information about their warranty policy.

Reputable roofing contractors will make all of this readily available for your review.

If you suspect that your roof was poorly installed, have it inspected and thoroughly documented to hold the roofing company accountable for the repair or replacement of their faulty work.

You can learn more about common Mistakes that Most Roofers Won’t Tell You by visiting atlantacommercialroofingcontractors.com/15-mistakes-roofers-wont-tell-you/

Commercial Roofing System Scrapes, Punctures, and Holes

TPO, EPDM, and PVC membrane systems are vulnerable to being scraped, punctured, and developing holes that go unnoticed until severe damage has occurred.

Cause – The causes for scrapes, punctures, and holes in your roofing system may include:

• Storm Debris
• Foot Traffic
• Equipment Maintenance, Repair, and Replacement
• Wildlife
• Poor Roof Installation
• Defective Material
• Inferior Quality Repairs or Patchwork

Over time, this type of damage can lead to rotting or destabilizing your roofing system’s support structure. This can result in catastrophic loss if it leads to a complete roofing system failure.

Solution – The following measures will help prevent scrapes, punctures, and holes from causing significant damages to your building:

• Install raised walkways, rooftop pavers, or walk pads from roof access points to machinery and equipment.
• Have pathways reinforced where walkways are not possible.
• Schedule thorough inspections after equipment maintenance, severe weather events, or the discovery of wildlife activity.
• Restrict roof access to maintenance and technical crew members.
• Have the roof inspected annually for signs of shrinkage, expansion, weathering, or other signs of trouble.

If left unmanaged, this type of damage has the potential to void the manufacturers and maintenance warranties.

When having your roof repaired, the expansion and contraction of materials from temperature and weather conditions must be taken into account. In many cases, the source of a leaky roof is the poor or inadequate repair of a previous issue.

Leaky Roof Prevention

Among the best measures of leak prevention for a roofing system is not to ignore it. Routine inspections and a roof maintenance plan are far less costly than a partial or total roof replacement.

Take immediate action when damage occurs. Problems with roofing systems don’t go away on their own, and are exacerbated when avoided or repairs are delayed.

Commercial Roof Leaks

If you don’t know how to address these common leaky roof issues, your building could be severely compromised and require extensive repairs well before its time.

In this article, you discovered 3 common leaky roof scenarios, what causes them, and how to quickly solve them.

Allowing problems with your leaking roof to persist will lead to structural damages, rot, mold, mildew, and very costly repairs. In the case of roofing systems, everything you can do to fix and prevent leaks is far less expensive than repairing structural damage to the building or having to replace your roof entirely.

Sources:
https://www.copper.org/applications/architecture/arch_dhb/arch-details/flashings_copings/roof_penetrations.html
https://www.nachi.org/roofs.htm

See 3 Leaky Roof Causes and Solutions for the first version of this content.

Is TPO the best flat roof system for your property? This question is frequently asked by property owners that need a new roof, and we have the answer.

As a relative newcomer to the roofing materials industry, TPO roofing systems have gained extraordinary popularity and are being used throughout the United States. Due to its durability and cost efficiency, TPO should be considered when re-roofing or installing a new roofing system.

atlantacommercialroofingcontractors.com takes an in-depth look at the definition, installation, warranty, cost, and problems associated with TPO roofing systems while answering some of the most frequently asked questions about it.

TPO Roofing Explained – Production, Properties, and Benefits

TPO is Thermoplastic Polyolefin, and it is one of several single-ply roofing systems.

The following will help you understand the composition, properties, and production of TPO membranes for both commercial and residential structures.

• A TPO membrane may be produced by calendering with lamination (this is the process of combining materials at high heat and pressure by passing them through rollers), extrusion with lamination (a process to make long shapes with constant cross sections, similar to squeezing toothpaste from a tube), or through extrusion-coating techniques.
• Sheet thickness is usually 40 mils to 100 mils. That’s about the thickness of a heavy duty trash bag.
• Sheets are typically produced in widths ranging from 6 feet to 12 feet.
• The composition of TPO sheets is a blend of polypropylene, ethylene propylene polymers, and polyester reinforcement.
• Overlapping seams are sealed by heat welding which uses hot air.
• The majority of TPO membranes are white but can come in a variety of colors.
• TPO roofing is resistant to oils and chemicals carried by commercial exhaust vents.
• TPO roofing material contains flame retardants and UV absorbing elements.
• TPO roofing systems receive high wind ratings when properly installed.
• TPO roofing has a life expectancy of about 30 years, however, only having been in use for three decades, its full potential lifespan is still being evaluated. As time passes, production of the system and its method of installation have naturally worked out the bugs, thus improving the product and increasing its longevity.

TPO Roofing Installation and Warranty

The installation of a TPO roofing system, when done by an experienced roofing company, is fast, clean, and virtually nonintrusive.

How your roofing system is installed will determine its ability to withstand the elements and ultimately its lifespan.

Affixing the TPO membrane is accomplished by making it fully adhered, and mechanically attached or ballasted; the following factors greatly influence the quality of the roofing system’s installation:

• Proper roof slope for a efficient draining.
• Strategic installation and fastening of insulation (when used) to deter bulging or sagging.
• Proper application of adhesives.
• Proper use of a seam welder (to prevent future leaks in the seams).
• All welds checked using a seam probe.
• Drip edge seamlessly connected around the perimeter of the roof.

In addition to a quality installation, a strong warranty is advantageous and very valuable. There are two warranties to consider when installing any new roofing system:

Manufacturer’s Warranty – This warranty covers manufacturing defects in the material used for your roofing system. Once the installation is complete, your contractor should provide you with a warranty certificate.

An example of material failure would be the separation of the lamination from the TPO membrane during hot weather. Unless it is determined to be a result of faulty installation, a claim should be made against the manufacturer’s warranty.

Contractor’s Warranty – This warranty covers the workmanship and installation of your roofing system.

While there is no industry standard for the duration of a contractor’s warranty, it should contain the following:

• A list of what items are covered.
• What actions or situations would void the warranty.
• When the warranty expires.

The above installation and warranty information underscore the necessity to thoroughly vet contractors.

TPO Roofing Cost

Pricing any roofing system can be a daunting experience. Often there is a significant disparity from one quote to the next, validating the need to collect a minimum of three bids from reputable roofing contractors.

Prices for installing a TPO roof system will vary depending on the time of year, brand, quality of the materials, method of installation, and the amount of labor involved. You can expect to see price quotes in the following ranges:

Tear-off costs can run between $100 and $200 per square. In some cases, the contractor will bundle this into material and installation pricing.

A tear-off is when the existing roofing system is completely removed to install a new system. Depending on the type of roofing system being installed and the condition of the existing roof, the new system may be installed over the existing one.

TPO material will see a price range between $150 and $500 per square.

TPO installation labor costs will range from $500 and $900 per square.

Maintenance contract pricing varies from contractor to contractor.

Roofers and their suppliers price materials in terms of ‘squares,’ whereas
1 square = 100 square feet.

So as an example, the price range of the bids you receive, including tear-off, material, and installation for a 1,000 square foot roof may fall within $7,500 to $16,000.

Note: Across the industry, roofing installations are more expensive in the spring and summer time. To save money, try to schedule an installation for the off-peak season (early spring and fall).

TPO Roofing Problems

The majority of problems that arise with TPO roofing systems occur as a result of poor installation.

Here are some commonly reported issues:

• Roof slope is too low, resulting in pooling water. (which degrades materials faster)
• Insulation (under the membrane) not installed correctly and is causing bulges.
• Seam separation from improper welding, allowing water penetration.
• Torn membrane from debris striking the roof.

For proper installation, it is essential to hire a roofing company that has extensive training and experience with TPO roofing systems.

People Also Ask

Question: Is TPO better than EPDM?
Answer: Inconclusive. Depending on which aspect of the two roofing systems you wish to compare, and your roofing requirements, the answer may vary.

While EPDM and TPO offer very similar benefits, TPO with its stronger and more durable seams (adhered to the roof), make it a desirable option.

Question: What is the difference between PVC and TPO?
Answer: Visually, the two roofing systems are virtually identical.

Performance-based, the two systems produce similar results until puncture resistance, environmental impact, and eventual “known” problems are taken into account. In this scenario, the TPO system is a superior option. However, when price and warranty terms are considered, PVC edges out TPO. Both are great products that check different boxes and satisfy different needs.

Question: How long has TPO roofing been around?
Answer: Since 1989.

Question: What colors does TPO roofing come in?
Answer: Standard colors are white, tan, and grey. However, TPO can be found in different shades of grey, brown, green, red, tan, and gold.

Question: Is TPO roofing flammable?
Answer: Yes. However, as with all roofing systems, TPO roofing is required to meet FM and UL fire ratings.

A distinct difference and advantage of TPO is that it does not release dioxins when burned and contains flame retardants.

TPO Information Revealed

When being presented options and quotes for new roofing systems, property owners frequently ask “What is TPO?” As you’ve discovered, it’s one of the most popular thermoplastic roof membranes in today’s roofing industry.

In this article, you were presented valuable information about the installation, warranty, cost, life expectancy, problems associated with TPO roofing systems, and answers to frequently asked questions.

By asking the right questions and being informed when selecting a roofing system and the contractor to install it, you will benefit from getting the best roofing solution and warranty at the best available price.

Sources:
http://www.everybodyneedsaroof.com/thermoplastic-membranes
http://mrca.org/aws/MRCA/asset_manager/get_file/161617?ver=344
http://firestonebp.ca/roofing/tpo-roofing-systems/tpo-installation-methods/
http://www.nrca.net/
http://www.azsfb.gov/sfb/Performance%20Specifications/Roofing%2009202018/07%2054%2023%20-%20TPO.pdf

See TPO Roofing System Explained for the first version of this content.