Spray Foam Roofing

What Is Spray Polyurethane Foam Roofing?

Spray Polyurethane Foam Roofing, or spray foam roofing, is a roofing material that’s sprayed as a liquid and expands and hardens into a foam, creating a solid layer across an existing roof.

Spray foam systems are generally applicated over existing roofs because of its lightweight and flexible application process.

While SPF (Spray Polyurethane Foam) is not the most popular roofing substrate, its flexibility for application on aging or existing roofs makes it an ideal solution for building owners looking for a lower cost, high performing system. 

All SPF Foam roofs are coated with two layers of acrylic roof coatings. A first layer of base coat is sprayed on and rolled out sealing the foam and any crevices. Then a final white acrylic top coat is sprayed on giving it a final seal and doubling the strength and durability of the roof.

Marshfield, Missouri courthouse

The main advantages of spray polyurethane Foam Roofing Sytems

1. Self-Insulating

SPF foam the highest R-value of any commonly used roof insulation with a R-value rating of 6.6 per inch. R-value is the measurement used to asses insulating material’s heat flow resistance. The higher the R-value , the greater the insulating power.

2. Seamless application

Due to the nature of the application process, SPF roof are 100% seamless, giving you a fully-insualted, fully waterproof roof.

3. Low labor costs

The application process of Spray Foam Roofing Systems is much simpler than most commonly used roofing systems. Than means lower labor costs for the customer and faster start to finish times.

4. Renewable

SPF Foam roofs can be washed and re-coated every 10-15 years or sooner when needed making it a reliable renewable roof system that can last up to 30 years.

5. High UV Reflection

Finished SPF Roof Systems that have been coated with a white acrylic top coat are highly UV reflective. This means less energy costs during warm seasons which can can building owners thousands of dollars.

Spray foam roofing systems have been used and proven since the early 1960’s making them a reliable, versatile, and cost-effective roof system for all building owners to consider when looking to try a new system for their roof.

Spray foam polyurethane roofing summary

No roof system is perfect or without its flaws. For instance Spray Foam roofs are more susceptible to hail damage than roof systems such as PVC Membranes. However if a foam roof is maintained and inspected for damage on a yearly basis, it proves to be an ideal solution for many business owners.

On average a Spray Foam System will cost you anywhere from $4.00 to $7.00 per sq. ft. The cost will vary a lot based on several factors, some of which include

  • Roof size
  • Penetrations on roof
  • Existing roof substrate
  • Access to roof



All of these factors need to be considered to make the best decision when deciding which roofing system to choose. 

Your roof is an investment

Protect that investment by choosing a roofing system that performs over years and saves you time and money.

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