A Built-Up Roofing System Could Be The Perfect Option For Your Commercial Flat Roof

When my husband and I purchased our first home, the process was stressful, but we settled on one we liked enough to live in temporarily until we expanded our family. When moving time arrived, we both dreaded the expected stress. We ended up using a different real estate agent than we did the first time, and we made a great decision, because she had a lot of home remodeling knowledge! We were adamant on finally finding our "perfect" home this time. When she showed us homes that lacked features we desired that we would have "nixed" before, she let us know if the feature could be added, and usually it could! We are now in our new home that we had a few small renovations performed on after we bought it, and we love it! I want to help others by sharing some remodeling tips I learned on a blog!

A Built-Up Roofing System Could Be The Perfect Option For Your Commercial Flat Roof

27 July 2019
 Categories: , Blog


If your commercial building has a flat roof, you have special considerations when it's time to have a new roof put on. Flat roofs don't drain in the same way as sloped roofs, so shingle roofing isn't a good match. Instead, built-up roofing is an option to consider. This type of roofing has been used for many decades, and it's a popular choice for commercial flat roofs. Here's how built-up roofing systems are installed and their benefits.

How Built-Up Roofing Is Installed

A built-up roof has several layers composed of bitumen, fabric membranes, and a surface topping. There are different options for the membranes. They are generally made of fiberglass reinforced materials and coated with bitumen, asphalt, or minerals. The membranes can be black or white depending on what the roofer is trying to achieve. For instance, a white membrane layer can be used on the surface to reflect the sun and keep the building cooler.

Bitumen is a thick and sticky tar-like material that causes the membranes to adhere to the roof. Bitumen can be applied hot or cold. The hot application process creates strong odors while the cold installation process doesn't. The built-up roofing contractor starts with a base of bitumen and adds the membranes in layers to build up the roof. Then, a top layer is added which might include a membrane or rocks. A top membrane has to be adhered to the roof while rocks can be used for a walking surface and to hold the roof in place.

Why A Built-Up Roof Is A Good Choice

When a built-up roof is installed properly, it creates a seamless covering for your roof that does an excellent job of keeping rain from penetrating the building. The top layer protects the roof from the weather and UV exposure so a built-up roof can have a long life. Plus, when the top layer is gravel, the gravel provides fire protection for the building. One advantage of a built-up roof is the lower cost when compared to other types of commercial roofing. Built-up roofing systems are among the most affordable roofing choices.

This type of roofing also has an attractive appearance, especially when covered with gravel or rocks. This could be a plus if taller buildings look out over the roof. Repairs are usually easy to do with this type of roofing since the roof can be patched or new membrane can be added. However, repairs should be minimal since the layer of rocks protects the membranes from damage that might be caused by foot traffic or falling debris. For more information, contact built-up roofing contractors.