Understanding the Durability and Longevity of SPF

Understanding the Durability and Longevity of SPF

Spray foam roofing is an excellent roofing material for various reasons. But what is the durability and longevity of SPF? According to professional estimates, SPF roofs should be between twenty to thirty-five years; however, this estimate is merely for warranty purposes.

With diligent maintenance, an SPF roof can last beyond its warranty period. An SPF roof reapplication is a fantastic process that replaces the silicone top coating without altering the original foam and may extend the life of your SPF roof by another 20 years. This can provide significant savings in repairs and replacement costs for commercial structures like warehouses and factories.

Ultimately, maintenance, weather, climate, and traffic dictate the total lifespan for many roofs. The longer a roof is exposed to the elements without repairs or upkeep, the shorter its entire lifespan. 

What is Foam Roofing?

Polyurethane foam is a liquid sprayed on top of existing roofs to form and expand into a foam layer. After a thorough cleaning, spray foam can be applied directly over surfaces like asphalt, concrete, metal, shingles, and wood. Residential SPF roofs provide homeowners excellent insulation, which translates into a more energy-efficient and cost-effective home. 

Understanding the Durability of SPF Roofing

According to performance tests and research, SPF roofing systems can last 30 years or more. Furthermore, they require relatively little maintenance compared to other roofing alternatives. 

They are also resistant to hail and wind-driven debris leaks, resist strong wind blow-off, enhance structural strength, and limit moisture damage within the building envelope.

Moisture penetration and a lack of wind resistance are the two most common reasons for early roof collapses. Moisture in roofing systems causes leaking, faster insulation and membrane failure, structural degradation, asset depreciation, and poor thermal efficiency. 

Similarly, the removal of a roof during a significant windstorm causes structural damage and exposes the structure’s contents to the elements. Roofing is the leading cause of disaster-related insured losses, according to the insurance industry.

Because of its 90% closed-cell features, SPF roofing prevents moisture ingress. Localized damage in your SPF roof doesn’t necessarily result in water leaks unless the damage doesn’t penetrate through the foam.

How to Extend the Life of Your SPF Roof

SPF is a sought-after roofing material for its water resistance, lightweight, and excellent durability.

However, spray polyurethane foam roofs still require some maintenance measures to ensure that the foam remains adequately sealed.

These techniques necessitate regular measurements and, if necessary, layer reapplications. To begin, specialists will remove broken pieces using sophisticated measurement tools and installation equipment. Afterward, they’ll reapply the same material and wait for it to cure before making repairs.

Because of the extensive damage to a particular region, repairs need far more effort than upkeep. Minor repairs can cost 5-10% of the overall installation cost, and full-fledged repairs might cost 1/2 or 3/4 of the price of a new spray polyurethane foam installation.

As a result, several homeowners with SPF roofs typically opt to replace the entire roof instead.


The best thing about SPF roofs is that there is virtually no limit to how many times you can reapply a new layer. As long as you keep up with standard maintenance procedures, your spray foam roof should cover your heads for a long, long time. The durability and longevity of SPF proves itself worthy of looking into.

American Foam Experts is a trusted insulation company in Walnut Creek, CA, that offers expert services to residential and commercial clients. Contact us today to get a quote!