5 Myths About Spray Foam Roofing Debunked (With 45+ Years of Proof)

Are you worried that a spray foam roof won't hold up against foot traffic, is only a temporary solution, or is difficult for contractors to install correctly? In this article, we'll tackle the five biggest myths about spray foam roofs, back them up with real facts, and share what we've learned from over 45 years of installing SPF roofs across the country.

Myth 1: Spray Foam Roofing Is Just a Temporary Fix

Many building owners think spray foam is a short-term patch, not a real roofing system. The truth? A properly installed and maintained SPF roof can last decades — not just a few years. Some of the roofs we installed in the early 1980s are still performing well today. Instead of full tear-offs, SPF roofs can be recoated every 10–20 years, extending their life at a fraction of the cost of replacement.

Myth 2: Spray Foam Roofs Are Too Weak for Foot Traffic

We often hear, "Won't spray foam dent or get damaged if someone walks on it?" Not when it's installed correctly. The average compression strength of spray polyurethane foam is 60 PSI. This is stronger than the commonly used "ISO-Board". Spray foam roofs are topped with a protective coating embedded with granules, adding strength and slip resistance. For areas with regular foot traffic, we install designated walkways with extra sand or coating layers for stability and safety.

Myth 3: Spray Foam Roofing Is New and Unproven

While SPF roofing might feel like a newer system compared to older ones like gravel built-ups or metal, it's far from new or unproven. Our company began installing commercial spray foam roofs back in 1979. That makes SPF older than TPO membranes. Today, spray foam is trusted on schools, warehouses, government facilities, factories, and even high-wind coastal buildings.

Myth 4: Spray Foam Is Hard to Install Correctly

Here's a partial truth: Spray foam installation does take skill and experience. For Spray foam to be laid down correctly, it needs three types of energy: Electrical, Environmental, and Exothermic. It's exactly why fewer contractors do it — and why you should only trust spray foam roofing professionals. Our crews go through ongoing training and follow strict manufacturer application specifications to ensure the roof performs as promised.

Myth 5: Hardly Anyone Installs Spray Foam Roofing

Some building owners assume finding a qualified spray foam contractor is impossible. It's true there's a higher barrier to entry — the rigs are expensive, and the crews must be skilled. But there are far more qualified SPF contractors than most people think — and the market has grown steadily as more building owners see the benefits. Ready to Learn More? Take the next step by checking out our Ultimate Guide to Spray Foam Roofing or request a free roof assessment to see if SPF is right for your building.