How Much Does a Spray Foam Roof Cost?

spray foam re-roof

Foam Roofing Cost

The average roofing installation price for a commercial spray foam roof costs anywhere between $5900 to $7000 depending on the slope, pitch, and size of your roof.  This price would cover a small commercial roof of 1500 square feet or a small commercial roof section.  You can expect to pay $2.50 to $3.00 per square foot or $250 to $300 (per 1″ of foam) per square installed for a small commercial flat roof. Costs for roof replacement will vary depending on the size of the roof, the prep work involved and the ease of access.

You can review the factors we consider when pricing your spray foam reroofing project below.

Roof Size

Obviously the larger the roof, the more a reroofing with spray foam will cost. If there are materials to be removed, this will be added to the per square foot cost. Larger roofs, usually over 25,000 square feet, will enjoy some economies of scale in terms of price per square foot. The logistics of the roof, how difficult it is to reach and work on, are also factors we must take into account. The roof slope and extra equipment needed for safety and access are key factors in the roof logistics calculation.

Foam Thickness

The thickness of foam determines its insulating value. The thicker the polyurethane foam, the higher the R-value. How thick the foam is also determines how much material we will need to complete your project perfectly. Applying spray foam is much quicker and foam does the best job of insulating compared with other roof covering alternatives. It also seals cracks and voids as it insulates.

Prep Work on Existing Roof

To adhere completely to the existing roof, Norris Spray Foam will make sure that your roof is clean before applying foam to the roof surface. If there are no repairs or modifications required, this is a fairly straightforward process. If the roof is damaged, needs amending, or areas of the roof need to be removed, then the cost per square foot of a spray foam reroof can be higher.

UV Coating

To protect the roof from UV rays, a silicone coating is applied to the top of the foam. The thicker the UV coating, the longer warranty you can get for your roof. While 2 coats are standard, you can obtain a longer life by getting 3 or more coats of silicone.  The silicone coating also protects the foam and roof from weather events and flying debris, such as hail or tree branches.

The longevity of a foam room and the fact that it can be applied over most existing commercial roofing systems make it a wise investment for any commercial property owner.  Combine these advantages with the renewable characteristics of a foam roof (you can extend the life of the roof with additional layers of silicone UV protection) and you have a recipe for a positive return on your investment.

The contractor you choose will have the biggest impact on the price of spray foam reroofing.  The more experience a contractor has with the product and its application, the more likely that the contractor has achieved efficiencies that an inexperienced roofer won’t have achieved yet.  Norris Spray Foam is a leader in spray foam application in our area and our experience translates into a better pricing structure for our customers.

Another important consideration is the warranty that we provide for our work.  We have been around for more than 10 years and will continue to stand behind our roof warranties well into the future.  We are a licensed and insured roofing contractor in the state of Texas.