How Does Spray Foam Roofing Work?

spray foam roofing

Quality Roofing You Can Trust

What is spray foam roofing? This method of roofing has gained popularity in commercial structures due to its durability and ease of installation. The material that is used for spray foam roofing is a liquid form of polyurethane that expands as foam once it is sprayed. How does spray foam roofing work?  As it expands, it creates a solid layer, spreading across an existing roof. This SPF material can be used in any climate and on most roofing systems. With proper installation and maintenance, commercial spray foam roofing can have a life span of fifty years or more.

spray foam roofing

Why get spray foam roofing?

There are seven reasons why more commercial building owners are going with the spray foam roofing today: 

  • High R-Value: Of the different roof insulation options, the highest R-Value material is spray foam roofing of polyurethane foam. R-value is the capacity to resist heat flow. To get the most insulation power, you want a high R-value. You will see a total ROI within ten years through lower cooling and heating costs. 
  • Renewable: Spray foam roofing has several benefits starting with energy savings, as we just mentioned. Another benefit that is popular today, it is a renewable material when it has been installed correctly and is maintained as advised by the manufacturer and contractor. By renewable, we mean it can be re-coated without having to tear off any old roofing, keeping that material out of the landfills. A spray foam roofing re-coating will add another ten to twenty years to an existing roof. 
  • Quick Install: Spray foam roofing is quick to install because there is no tear-off of the existing roof. As spray foam roofing is installed, the foam forms around roof penetrations, and there isn’t any heavy equipment required for installation.
  • Self-Flashing: Spray foam roofing forms to irregular shapes that commercial structures are known to have, including forming to the curbs and creating flashings. It forms around penetrations like drains, HVAC units, skylights, parapet walls, pipes, and vents. 
  • Seamless: This may be one of the most significant benefits of spray foam roofing: It is seamless!  For a commercial building, this is a huge benefit because this means less chance of leaks. Seamless spray foam roofing is watertight and wind-resistant because there are no corners or edges lift and allow the wind to catch it or allow rain to get under the foam membrane.
  • Maintenance Ease: Commercial structures often have work done on the roof for the HVAC, electrical, plumbing, etc.  Accidents happen, and a contractor will drop a sharp tool that can tear the spray foam roofing material.  This is an easy repair! Cut the damaged area out, allow to dry, then apply caulk, smooth it, and the repair is done. 
  • Last Roofing: It has been said that a spray foam roofing is the last roof a commercial building owner will ever need to have installed. Maybe that is the most significant benefit of all! 

Is spray foam roofing good?

In addition to the seven benefits we listed, other features make spray foam roofing the right choice for commercial structures with flat or low sloped roofs—a common problem with a flat roof, the drainage. After a heavy rain or melting ice and snow, if the drains are maintained, the water has nowhere to go. Spray foam roofing is applied in layers of various thickness, which provides better drainage. 

The drainage issue goes hand-in-hand with condensation and ice damming, another issue with flat roofs that spray foam roofing helps. As the interior heat comes to the roof and melts the ice and snow, then the temperature drops and refreezes, this creates ice dams. That allows water to seep into ordinary roofing membranes. Because spray foam roofing is insulation, that heat from the interior of the building never makes it to the roof. Once the ice and snowmelt, it drains away. 

Can spray foam rot your roof?

No spray foam roofing will not rot the existing roof. This is a breathable, open-cell foam, allowing air and moisture to flow through. This ensures that water that seeps in will be soaked in by the spongy foam and eventually pass on through.  

Can you walk on a foam roof?

Spray foam roofing is a durable material that is safe for foot traffic. This resilient surface can handle the foot traffic that comes with other contractors need roof access to their equipment, like the electrical, HVAC, plumbing, even storage. 

How long does a spray foam roof last?

With proper installation and regular maintenance, spray foam roofing will need to be professionally cleaned every ten to fifteen years. With that recommendation kept in place, your spray foam roofing will last fifty years or more. This is why they say spray foam roofing is the last roofing you’ll ever need to install.

spray foam roofing

Closing Words To Top This Off

Is spray foam worth the money? Definitely!  As mentioned, the money you save on cooling and heating bills will recoup your investment within ten years if the spray foam roofing installation is done correctly, and you keep the maintenance up as recommended.