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3 Common Problems You’ll Face With SPF Roofing

Spray polyurethane foam (SPF) is achieving enormous acceptance with many commercial and industrial companies. It’s true because of its easy-to-install characteristic and long-term roofing capabilities. 

However, SPF isn’t the perfect material. While it has a great number of benefits, it does have some shortcomings. Here’s a balanced angle on SPF roofing to help you make an informed decision.

SPF Shortcomings


When moisture seeps through the SPF material, it can cause surface cracks, creating something similar to an alligator’s skin or scales. This issue is frequent with most trie-thermal roofing (TTR) systems, which use additional material layers that make the scale-like skin much apparent when surface cracks happen.

If property owners leave this without maintenance, alligator skins can evolve into splits, making the problem worsen without proper recoating.


Like alligatoring, blisters occur when moisture and heat penetrate the SPF layers. In doing so, they create surface bubbles, which appear like spots across the material. During autumn and winter, identifying blisters can be problematic. They show themselves greatly during summer and hot spring seasons.

Blisters usually go away after SPF applicators seal off the moisture source. Once done, they can remove and re-patch the material with fresh SPF coating. If you’ve painted before, surface blisters in paintings and finishes are similar.


Initially, a ridge pattern looks pleasing to the eye until you realize it’s your flat roof tackling thermal expansion problems. In typical acrylic elastomeric coating over metal roofs, the thermal expansion and contraction create the ridge patterns. With many SPF roofing applications over metal roofs, it’s no surprise that ridges will form.

Unfortunately, ridges are already-damaged roofing material. An SPF applicator must remove and replace the damaged material with a new SPF layer. In most cases, extreme thermal expansion leading to such massive damages is rare to occasional.


On the contrary, a great number of SPF users attest to the immense benefits behind the material. If your SPF applicator can install it effectively, you will get the following advantages.

Wind Resistance

Low-slope roofs suffer from the immediate lift during a hurricane, cyclone, or tornado. Thankfully, TTR and SPF roofing add enough mass to reduce roofing wind uplift. Even low-density metal roofing panels showed the same resistance level as clay and slate tiles. Both clay and slate have excellent wind resistance ratings, making them the most efficient materials during windstorms.

Immediate Installation and Use

SPF roofing requires no extensive installation equipment. While it has a specialized process only certified teams can execute, the SPF material itself can cure within 24-48 hours. In doing so, you won’t have to delay resuming work once again because your SPF roofing is ready for the task.

Impact Absorption

In numerous cured SPF roofing tests, hail, wind-driven missiles, and other projectiles have minimal to negligible effect on SPF roofing layers. They will never leak from hail damage as long as certified SPF teams applied and installed them.

You won’t need to look far to find an SPF specialist team. If you have yet to find a reliable applicator, you can always count on us at Ener-Spray. Contact us today to learn more about everything that we can do for you.