Does Your Roofing Contract Include This Critical Detail?
When investing in a spray foam roof, long-term performance comes down to more than just materials—it’s also about what’s written in your contract. One of the most commonly overlooked (but critically important) details is the liquid and cured thickness of the UV coating.
Many homeowners assume contractors are applying the proper coating, but without these specifications clearly documented, you could unknowingly be at risk of premature roof failure, voided warranties, and costly repairs.
Why This Matters
✅ Ensures Warranty Compliance – Manufacturer warranties often require a specific dry mil thickness.
✅ Prevents Under-Application – Some contractors apply less coating than needed to cut costs.
✅ Protects Your Investment – A properly coated roof withstands UV damage and extends roof life.
✅ Adds Transparency – Specifying both liquid application rate and cured dry mils ensures accountability.
📌 Before signing any contract, ask for this in writing. Missing these details can cost you thousands down the line.
1️⃣ Ensures Compliance with Manufacturer Specifications
Leading manufacturers of spray foam and elastomeric roof coatings publish detailed specifications for warranty eligibility.
For example:
A 10-year acrylic coating system (with ~55% solids) typically requires:
3 gallons per 100 square feet in two coats
This results in approximately 24 dry mils once cured
📏 If your contractor doesn’t follow these specs—and your contract doesn’t spell them out—you risk losing warranty coverage even if the work looks fine initially.
2️⃣ Prevents Under-Application of Coating
It’s unfortunate, but true: some contractors apply less coating to save on materials and increase profits.
Without both liquid rate and dry thickness specified, you won’t know whether your roof has been properly protected until it’s too late.
🎯 Under-applied coatings lead to:
Accelerated UV degradation
Reduced lifespan
More frequent leaks and repairs
3️⃣ Protects Your Investment
Spray foam roofs perform best when protected by a consistent UV barrier. The dry mil thickness directly affects:
Water resistance
Energy efficiency
UV reflectivity
Overall longevity
💡 If the roof is under-protected, it may degrade years earlier than expected—costing you in both maintenance and early replacement.
4️⃣ Improves Transparency and Accountability
By clearly stating:
The UV coating brand
The application rate (gallons/100 sq. ft.)
The target dry mil thickness
…you establish a clear performance expectation and reduce the chance of disputes later on. It also ensures your contractor is held to manufacturer standards—not just vague promises.
5️⃣ Supports Warranty Compliance
Most spray foam roof warranties are only valid if materials are applied according to exact specifications. If your roof isn’t coated to the required thickness—even if unintentional—you could:
Be denied warranty repairs
Have to pay for issues out of pocket
Lose resale value due to lack of documentation
🛡️ Your contract is your best defense.
📝 What Should Be Included in Your Contract Proposal?
1. Material Specifications:
Name of the spray foam manufacturer
Name of the UV coating manufacturer
2. Application Details:
Liquid Application Rate: Gallons per 100 sq. ft. (e.g., 3 gallons for 10-year system)
Dry Mil Thickness: Target cured thickness (e.g., 24 dry mils)
3. Application Process:
Confirm coating will be applied in two separate layers
State the intended color of the topcoat (typically white for reflectivity)
🔎 Conclusion: The Fine Print Makes a Big Difference
Spray foam roofs offer incredible durability, energy savings, and protection—but only if installed properly. By requiring both liquid and cured coating thickness in your contract, you:
Protect your investment
Ensure warranty compliance
Prevent corner-cutting
Maintain long-term roof performance
📌 Don’t leave it to chance. Get it in writing.
✅ Want to Know What a Professional Roofing Proposal Should Include?
If you’re not sure what details belong in a quality spray foam roofing contract—you’re not alone. One of the best ways to understand what to expect is to go through the proposal process with a trusted professional.
At Foam Roof Solutions, we’re happy to walk you through what a proper proposal should look like, what to ask for, and how to spot missing details before it costs you.
📞 Thinking about getting started? Reach out today to start the conversation.
