Flat roofing, specifically hot asphalt built up roofing (BUR), is where we got our start and we still do it almost every day. However, we also install single-ply roof systems (TPO, PVC, EPDM, KEE), modified bitumen roof systems, and foam and coatings. Flat roof systems are in Arizona, however, there aren’t very many roofing contractors that truly know how to properly install a flat roof.

Behmer Roofing has over 35 years of installing all types of flat roof systems throughout the state of Arizona – both on residential homes and commercial buildings alike. Give us a call today to have us inspect your flat roof.


The most common type of flat roofing – built-up (“BUR”) utilizes hot asphalt and multiple alternating layers (“plies”) of various types of roofing felt combined together to create a long-lasting, easy-to-maintain, roof system. Due to the extremely dangerous nature of this roof system, only hire an experienced roofing professional to install built-up roof on your home or commercial building. Behmer Roofing has been installing BUR roofs for close to 80 years!

Roof Coatings - Behmer Roofing


Behmer Roofing loves Roof Coatings. They are a great way to extend the life of your flat roof and save a bunch of money! We can install acrylic, silicone, and urethane coatings on your existing foam, built-up, or single-ply roof system.

Single Ply - Behmer Roofing


Single-ply roofing refers to multiple types of membrane roofing, especially TPO, PVC, EPDM, and KEE. As opposed to BUR, single-ply is one layer of rubberized polymer membrane heat-welded or glued together. Single-ply is a great option for your flat roof.

Modified Bitumen - Behmer Roofing


Modified Bitumen roofing is a type of built up roofing where the sheets are modified with a rubber polymer mixed into the asphalt. Mod-Bit can be hot-applied, torch-applied, or cold applied. Mod-Bit is typical an SBS or APP polymer, and is more expensive than traditional built-up roofing.


Spray Polyurethane Foam (SPF) is a material that is sprayed as a liquid so it can expand into a foam, creating a solid layer across an existing roof. The foam is then coated with an acrylic or silicone top coat.


Most frequent questions and answers

If flat roofs are properly installed by a roofing contractor and regular maintained or repaired, flat roofs have a lifespan of 20-25 years.

With opinions vary from roofing contractor to contractor, Behmer Roofing stands behind Built-Up Roofing (BUR) as the best material for flat roofs. The material creates the best waterproof seal and is the most easily repaired compared to the other types of flat roofs.