Spray Foam Roofing: Closed Cell Foam Application for Georgia Roofs

If you’re looking for a roofing system that delivers strength, insulation, and leak protection in one, closed cell spray polyurethane foam (SPF) is the solution.

Used on flat roofs, metal roofing retrofits, and both residential and commercial roofing, closed cell foam provides a seamless, energy-efficient barrier that stands up to Georgia’s hot, humid, and storm-prone climate.

What Is Closed Cell Spray Foam Roofing?

Closed cell foam is a type of spray-applied polyurethane that expands and hardens into a rigid, dense structure. It’s applied directly to the roof deck or existing roofing system and topped with a UV-resistant elastomeric coating.

Key Properties:

• High R-value (~6.5 per inch)

• Closed-cell structure blocks water and vapor

• Adds structural strength

• Adheres to most substrates (metal, concrete, wood, etc.)

• Forms a monolithic, seamless surface

How Closed Cell Foam Is Applied

1. Clean and Prep the Roof Surface
   Old membranes, rust, or dirt are removed to ensure proper adhesion.

2. Spray Apply the Closed Cell Foam
   Foam is applied in layers (typically 1.5"–3") using a heated spray rig.

3. Shape and Flash Around Details
   The foam is contoured around penetrations, curbs, and edges for full waterproofing.

4. Apply Reflective Coating
   A silicone or acrylic topcoat is sprayed or rolled on for UV protection. Optional granules are added for durability and traction.

Ideal Applications for Closed Cell Foam

• Flat and low-slope commercial roofs

• Metal roofing conversions

• Residential roofing with poor insulation

• Roof replacements that need lightweight systems

• Roof repairs and waterproofing upgrades

Closed cell foam works on:

• Metal decks

• Modified bitumen

• Concrete

• Wood or OSB

• BUR (Built-Up Roofing)

Benefits for Georgia Homes and Buildings

✅ Superior Insulation
Lower heating and cooling costs with high thermal resistance.

✅ Waterproof & Airtight
Closed-cell structure resists leaks, vapor, and wind-driven rain.

✅ Storm-Resistant
Foam adds uplift resistance and structural rigidity—ideal for hurricane zones.

✅ Lightweight but Strong
Great for aging roofs that can’t handle heavy systems.

✅ Longevity
With proper maintenance and recoating, closed cell foam roofs last 25–30 years.

FAQ: Closed Cell Foam Roofing

Is closed cell foam better than open cell foam?
Yes, for roofing. Closed cell foam is rigid, waterproof, and more durable—open cell foam is used for interior walls or attics, not exterior roofing.

How long does closed cell spray foam roofing last?
25–30 years with regular inspections and recoating every 10–15 years.

Can you apply closed cell foam over an existing roof?
Yes, if the existing roof is dry, stable, and compatible. It's often used in roof restoration instead of full tear-off.

Get It Done Right with Roof Nuts GA Roofing

We specialize in closed cell spray foam roofing for both residential and commercial properties. Whether you need new installation, roof repairs, or a full roof replacement, we handle the job with precision and code compliance.

We proudly serve Atlanta, Augusta, Macon, Sandy Springs, Savannah, and beyond.

📞 Call 404-476-6851
🌐 Visit RoofNutsGA.com