Posted on: 8 July 2016
As the new owner of an existing commercial building, you have a lot on your plate. Older buildings, while they can be a great value, often come with a slew of challenges. These include roofs that need to be repaired or replaced. If you're debating the wisdom of replacing your building's existing flat roof with foam roof coatings, find the answers to your questions here:
Does Foam Roof Coating Work on Older Structures?
Yes. In fact, in most instances, you can apply foam roof coating directly over an existing, leaking roof. Typically that entails making sure the surface is clean and dry and that all loose pieces of existing roofing have been removed from the substrate. This type of coating needs a stable surface on which to adhere.
Will Foam Roof Coating Improve My Building's Energy Efficiency?
Yes. Foam coating has an R-value of 7.14 per inch of thickness -- one of the best thermal ratings in the industry. This can shave up to 30 percent off your heating and cooling bill every month.
Is Foam Coating Harmful to the Environment?
Not so much. Forty-five years ago the components that made up foam roofing may have been less-than-environmentally-friendly, but today's spray foam has been greatly improved. Foam spray contains isocyanates -- chemicals that do contain toxins before they're cured. However, as long as proper precautions are taken during and immediately following application, there should be no-lasting negative effects. For the safest application, leave this project to a professional roofing contractor. But for the most part, once it's properly cured, foam coating doesn't off-gas harmful fumes into the air, and it gives you the opportunity to cover an old, leaky roof instead of stripping it and sending the materials to the landfill.
Is Foam Coating More or Less Expensive Than Other Roofing Options?
Typically, foam roof coating is one of the more economical choices for roofing replacement and repair. Because it's lightweight, there's no need to reinforce the existing structure, and it goes on easily as a liquid which cuts down on labor costs. The average cost to install 250 square feet of foam roofing is about $578, or about $2.32 per square foot. When you compare this with metal roofing's $14.91 per square foot or shingle's $8.77, the benefit is easy to see.
Is This Type of Roofing Durable?
It is. When properly installed and maintained throughout the lifetime of your roof, foam coatings can last as long as 50 years. This type of maintenance entails reapplying elastomeric roof coatings at regular intervals over time on top of the original installation. However, a more average life expectancy of this type of roofing lies somewhere around the 30-year range, which is still a nice duration when it comes to roofing.
Can You Walk on This Type of Roofing?
Worried about how your contractor will access your ventilation system for repairs in the future? Don't worry. When it's properly installed, foam roof coating can support weights of up to 40 pounds per square inch. That's more than enough to allow your technicians to come and go for routine system maintenance.
If you're still on the fence about using foam roof coatings or spray foam insulation in your building projects, remember: Spray foam coatings have been around for the last 40 to 50 years, and they've gone through great changes and advancements to keep up with this generation's much stricter building codes.Overall, this is an economical alternative to more expensive roofing materials, it's durable and it looks great. Make sure to consider foam roof coating when it's time to upgrade your building's look and functionality.Share