When people think of commercial roofs, they often think of black tar
roofs that trap heat or a tar and gravel roof. These roof types are
difficult to maintain, add weight to your structure, they’re prone
to mold and the stones break down over time due to weathering. Depending on how thick the SPF roof is, the roof itself can last
between 10 to 20 years, but can last a lifetime with proper
maintenance. Typically, a 20 millimeter coating will last 10 years
while a 30 millimeter coating will last 20 years. Below are a few
more benefits an SPF roof has to offer.
What Is An SPF Roof?
SPF stands for Spray Polyurethane Foam is a liquid that expands into foam when sprayed on an existing roof. This foam then dries to create a solid layer that protects against wind and other elements. While SPF roofing isn’t widely known, the technology has been around since the 1940s but wasn’t used for roofing until the 1960s, and there are many benefits SPF roofing provides.
Easy to Maintain
With a gravel-covered roof, you can’t see the tar layer underneath. If you have a leak, the roofing contractor will have to remove the gravel in the entire area to find and repair the leak. With an SPF roof, you only need to worry about regular maintenance every 10 to 20 years when the top layer of silicone wears down enough or if the roof suffers from impact damage from storms.
While SPF roofing isn’t impervious to hail, it is somewhat hail resistant as hail impacts are about half an inch deep, while the spray foam is 1.5 inches deep. This means that unless the hail goes through the entire 1.5 inches, it won’t create a leak.
Prevents Urban Heat Islands
Roads, buildings, and other infrastructure absorb the sun’s heat and then re-emits it. This contributes to more heat-related illnesses such as heat exhaustion, heatstroke, dehydration, etc. Dark roofs absorb heat, but SPF roofs are lighter in color, which means that the roof won’t absorb heat and even provides 10% to 20% in electricity savings.
The UV rays from the sun cause the gravel and tar to expand and contract, causing the roof to bind against itself, which causes damage and deteriorates the membrane. SPF roofs are resistant to UV radiation due to the silicone layer added above the polyurethane foam. This helps to make the SPF roof far more durable.
If you’re looking for a sustainable and efficient roofing system for your building, then an SPF roof is what you need. With nearly 40 years of experience in the Dallas area, A&L Foam LLC is your trusted choice when it comes to installing SPF roofs for your flat roof.