EPDM Roofing Systems:
This is one of the most popular options today, praised for the level of high durability, versatility and flexibility. EPDM (ethylene propylene diene terpolymer) roofs are comprised of ethylene and propylene – elements derived from oil and natural gas. When merged, these create a durable synthetic rubber membrane, which is not only waterproof, but also protects the structure from extreme weather, precipitation and wind. Additionally, EPDM roofs are well suited for a variety of projects, come in either black or white, a range of widths and two thicknesses: 45 and 60 mils.
White TPO Systems:
These also utilize the elements ethylene and propylene to create a single-ply membrane that is incredibly durable and lightweight. The secret of TPO, or thermoplastic, systems is that during installation the seams are welded with hot air to create a virtually seamless material. This not only adds the vital element of waterproofness, but also is resistant to fire, chemicals, tears, algae and provides good flexibility for building movement. As well, the white color will reflect the sun’s rays – ideal for reducing heat transfer on hot summer days.
Hot Tar Roofs:
An age-old material, hot tar roofs have been one of the most commonly and widely installed flat roofing systems throughout the U.S. for nearly the last 100 years. The installment includes layering of asphalt with reinforcing plies to create a multi-layer, built up roof system – also sometimes referred to as a “BUR” – which is waterproof, durable and inexpensive to install.
Torch Down Roofs:
Similar to the hot tar, torch down roofs also utilize asphalt and reinforcing plies to create a waterproof membrane to protect the structure from water, wind and extreme weather. The name is derived, however, from the actual method of installation. As the sheets are laid, they are “torched down” in the overlapping areas to join seams together and create a seamless rubber sheet on top of a fiberglass base. This creates additional durability for your commercial flat roof system.
An emerging trend in commercial roofing, metal systems are typically made of aluminum, copper or steel – although it’s possible to also utilize other materials. These systems create a highly durable, waterproof and fire resistant surface that also has great aesthetic appeal.