- BUR (built up roofing)
- Single-Ply Membranes such as EPDM, TPO and PVC
- Modified bitumen
There are pros and cons associated with each of these types of flat roof systems, but which choice is the best? Keep reading to find out!
BUR
Built up roofing is one of the traditional types of flat roofing systems used on commercial buildings. BUR systems typically consist of alternating layers of bitumen and reinforcing fabrics that form a finished membrane. This bitumen is generally asphalt, coal tar or cold-applied adhesive. The surfacings used for BUR systems include aggregate, such as gravel, mineral granules or slag; glass-fiber or mineral surfaced cap sheets; or hot asphalt mopped over the whole surface. Asphalt BUR is composed of multiple layers of reinforcing plies and asphalt, which forms a redundancy of waterproofing layers.
Considerations: The degradation of asphalt is a concern. Asphalt surfaces are oxidized by UV rays, and asphalt BURs can become brittle and begin cracking and, eventually, leaking. BUR systems can also require ongoing maintenance and may absorb a significant amount of heat depending on the roofing surface.
Single-Ply Membranes
Single-ply membranes are sheet membranes that are manufactured in factories and are typically classified as thermoset (EPDM) or thermoplastic (TPO or PVC), the key difference being that thermoset materials are irreversibly solidified after heating, and thermoplastic materials can be softened and hardened repeatedly when heated and cooled.
EPDM roofing is a synthetic rubber roof style that is used on low-slope roof surfaces and is most commonly used in single-ply roofing. The most common type of this roofing is vulcanized EPDM. During installation, the sheets of synthetic rubber are joined together using adhesives or other approved seam methods.
TPO and PVC are the most common types of thermoplastic roof membranes, which can be repeatedly softened by heating and hardened by cooling. The membranes are generally joined together by heat welding, melting the membrane sheets together to form a strong bond. TPO sheets contain substances that include colorant, flame retardants and UV absorbers to attain the desired physical properties. PVC sheets are made through calendaring, spread coating or extruding. They are generally reinforced using polyester, glass-fiber mats or scrim and contain plasticizers, stabilizers and other additives to achieve flexibility and other desired physical properties. The sheets are usually secured with fasteners, but some installs are fully adhered to the substrate.
Considerations: Single-ply membrane roofing can be less expensive and easier to install than BUR and is known to be durable and efficient. On the other hand, if water gets underneath the membrane, leak detection can sometimes become difficult. Seams, penetrations and other roof details also need to be installed and maintained properly to prevent potential leaks.
Modified Bitumen
Polymer-modified membranes are made up of reinforcing fabrics, which act as carriers for hot polymer-modified bitumen as it is made into a roll material. Like BUR membranes, modified bitumen roof system membranes are made up of multiple layers. They are usually installed as a two-ply system and are often fully adhered. The surfacings of these membranes include aggregate surfacing, metal foil-laminate surfacing, mineral surfacing and smooth liquid-applied surfacing.
Considerations: Like built up roofing and EPDM, darker roofing surfaces can absorb a significant amount of heat rather than reflecting it. Bitumen roofs can also be damaged and prematurely aged by persistent ponding or standing water.
The Best Choice in Most Cases
For many commercial flat roofs, a high-quality roof coating or restoration system may be worth considering when the existing roof is still a good candidate for restoration.
A properly installed roof restoration system can address many of the common issues associated with commercial flat roofs, including chronic leaking and deterioration caused by weather. Depending on the condition and type of the existing roof, restoration can also help a building owner avoid the considerable cost and disruption of a complete roof replacement.
Roof coating systems are designed to create a seamless, protective membrane over the existing roof surface. Seams, penetrations, fasteners and other vulnerable areas can be carefully sealed and reinforced as part of the restoration process. The finished system can provide another layer of protection against water, sunlight and weather while extending the useful life of a commercial roof.
Here are just a few of the potential advantages of restoring a commercial roof:
- Extends the useful life of an existing roof when it is still suitable for restoration.
- Reflective coating options can reduce the amount of solar heat absorbed by the roof.
- Reduced labor and disposal costs compared with many complete tear-off and replacement projects.
- Seamless, water-resistant protection over the existing roofing surface.
- Less roofing material sent to landfills when an existing roof can be restored rather than replaced.
Need an Expert?
Our group works together to provide:
- Larger Base of Knowledge
- Group-Wide Accountability
- One Source for All Projects
- Set Standards for Service
- More Peace of Mind
Roof restoration is not the right answer for every building. The existing roof should first be inspected to determine its condition, identify any wet or damaged areas and determine whether restoration, repair or replacement makes the most sense.
Learn More About Your Commercial Roofing Options
Choice Roof Contractor Group provides information and resources about commercial roofing systems, maintenance, restoration and replacement options.
For more information, please call (800) 670-5583.

Along the same lines, there can also be disadvantages when you’re working with an independent local contractor without access to a larger professional network. Some local contractors may be residential-focused businesses that only occasionally perform commercial work, while others may have extensive commercial experience.
Choice Roof Contractor Group is a nationwide alliance of independently owned commercial roofing contractors.
From the very beginning, Conklin has been the preferred manufacturer of our group. Top reasons we prefer 
Spring is upon us and this is the season when many businesses are beginning to think about repairing and upgrading their buildings. A building’s roof is the most important aspect of its construction and keeping it in good shape is a high priority. Metal roofing is often found on commercial buildings because of its low cost and reliability. For building owners looking to repair their metal roofs, finding a reliable contractor can be difficult.

With dozens of up-and-coming contractors across the nation joining Choice Roof Contractor Group for first-rate support, the future has never looked brighter for all of us! Early activity points to a banner year in 2017, with more sq. ft. expected to be serviced in the first two quarters than all of 2016. With much encouragement from the rest of the members on the call, the feeling of camaraderie could be felt between everyone! This just shows that even the younger contractors can achieve great goals with the backing of such a reputable and experienced team.
Following estimate requests from companies as big as Yahoo! (NASDAQ: YHOO) last year, we’re entering big leagues and Sam Hostetler knows that we can dominate.
Lively chatter and feedback was heard throughout the call as members shared what they wanted to change this year. It’s a beautiful thing to see veteran contractors help each other grow while also assisting newer contractors and encouraging them to take their roofing business to the next level.
Choice Roof Contractor Group is encouraging all members and supported contractors to visit the events being held in this first quarter of 2017. The Annual National Convention put on by our preferred supplier is being held February 2nd-4th, which will host a bunch of seminars and knowledge-filled talks that are there to help bring about motivation, confidence and excitement. We will also be having our
Jonathan Keim, the individual who heads up all our marketing, has some amazing plans and changes for 2017 and was excited to share the good news on the call! Jonathan wants to reinforce the foundation of the Choice Roof Contractor Group by setting the group up with all the tools necessary to dominate the roofing industry. The website has been structurally improved so potential customers will be more willing to stay on the page and learn more about CRCG. We’ve also improved the mobile site for the large amount of mobile users there are these days. Additionally, with the help of a software engineer, we made changes to the quote module so there are more conversions (i.e. more leads per website visit).
Reflective performance: White and other reflective roof coatings can reduce the amount of solar heat absorbed by the roof. The effect on overall building energy use will depend on factors such as climate, insulation, building use, HVAC efficiency, and the specific coating system.
26 New Contractor Relationships





Over the past month, we’ve made a number of changes to our website for faster speed, higher search engine rankings and better conversion rates (i.e. more leads received per website visitor). Our group will also be testing new marketing strategies and continue finding new ways to better serve commercial facilities.
You’ve seen it in the news before: “Business shut down due to OSHA violations”. Whether it was the owner of a construction company not providing the proper safety gear, or from an employee who didn’t follow safety protocol, OSHA violations can be the downfall of any roofing business.
We care about each other’s safety in our group and strongly encourage everyone to get proper OSHA training. We also feel it’s important to openly talk about how each of us are keeping our crews safe in day-to-day operations.

Since Carl started working with a few of our group leaders and joined our growing contractor network roughly a year ago, he has transformed his residential reroofing company and secured multiple contracts with major clients in his operating markets. He’s continuing to build on this strong start.
After receiving the training needed to install and maintain a variety of commercial roofing systems from the Conklin staff and our experts in the field, Carl hit the ground running. He changed his company logo, filed as an LLC with the name our in-house marketing team suggested, upgraded to a larger insurance policy and set up a new website. From there, he started networking and landed his first commercial jobs.
After a month-long break, Carl went out on a cold call to a large commercial building near his home. By chance, the business owner was there, and Carl took the opportunity to present his company’s value proposition, as well as additional information about Choice Roof Contractor Group (which offered the building owner with group-wide accountability, a service guarantee, and second-to-none field knowledge). After the presentation, the business owner agreed to let Carl inspect the roof, and an hour later Carl had secured work on the 30,000 square foot structure.
Due to the recent inquiries received about roof coatings with regards to standing seam-style roofing systems, we have put together this blog to help explain the proper installation process.
The outcome of your standing seam roof systems is really dependent on the skill and experience of your installer or contractor. This roofing type is prone to application errors. If you or your preferred contractor doesn’t have much experience with standing seam roof systems, don’t worry! By joining Choice Roof Contractor Group, you receive the support of a number of qualified nationwide contractors who can help you. These contractors are highly skilled and ready to provide the advice necessary to finish any project. Our members may even go as far as to travel to your location and help with a roof installation if needed. Here are some of the benefits you will also receive if you join:
We strive to help each of our members grow and become successful. This is why Choice Roof Contractor Group offers many benefits as you obtain more amounts of local roofing market shares. This includes: