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Atlas Insulation • High Performance + Moisture Strategy
Closed Cell Spray Foam Insulation in South Florida
Closed cell spray foam is a dense, high-performance insulation that adds strong thermal resistance per inch and helps limit air movement—ideal for South Florida projects where comfort, durability, and moisture control matter.
Need a lighter foam? See open cell spray foam. Prefer non-foam options? Explore blown-in insulation or batt insulation.
Get a closed cell spray foam quote
Share your project type and target areas (attic, walls, roofline). We’ll recommend thickness, coverage, and the best install approach.
Serving South Florida for residential and commercial foam insulation.
What is closed cell spray foam?
Closed cell spray foam is a rigid, high-density foam that cures into a durable insulation layer. It’s commonly chosen when you want stronger insulation value per inch, reduced air leakage, and a more robust building-assembly approach for demanding environments.
Where closed cell spray foam works best
- Attics and rooflines: High performance insulation where space is limited.
- Wall cavities: Strong thermal performance and reduced air leakage.
- Rim joists and transitions: Common leakage points that benefit from foam detail work.
- Commercial assemblies: Projects that need durability and performance.
Not every house needs closed cell. If your priority is comfort and air sealing at a lower cost, we may recommend open cell spray foam depending on the assembly and goals.
Closed cell vs open cell (clear differences)
| Foam type | Best for | Strengths | Considerations |
|---|---|---|---|
| Closed cell | High-performance builds, limited-depth cavities | Higher R-value per inch; dense and durable | Higher cost; needs precise application and planning |
| Open cell | Comfort upgrades, attics, walls | Expands more; effective for filling gaps and reducing drafts | Assembly-specific moisture strategy matters |
Read the open cell page here: Open Cell Spray Foam.
Why closed cell foam is popular in South Florida
South Florida buildings fight heat and humidity most of the year. Closed cell foam is often selected for assemblies where you want strong performance in a thinner profile and a tighter building envelope.
Performance wins
- Higher insulation value per inch
- Reduced air leakage when applied consistently
- Better comfort in rooms that run hot
Smart use cases
- Limited-depth cavities
- Rim joists and transition zones
- Commercial builds needing durability
Our closed cell spray foam installation process
This isn’t a “spray and pray” service. We focus on surface prep, controlled application, consistent thickness, and clean execution so the foam performs as intended.
- Scope check: Confirm target areas and access.
- Assembly planning: Align foam thickness with performance goals.
- Protect the space: Keep overspray controlled and contained.
- Consistent application: Even coverage across the assembly.
- Detail work: Edges, penetrations, and transitions sealed cleanly.
- Final walkthrough: Confirm coverage and jobsite condition.
Credible guidance on spray foam insulation
The U.S. Department of Energy provides an overview of spray foam insulation and where it fits in energy upgrades.
Why choose Atlas for closed cell foam
- Controlled installs: Clean work with overspray management.
- Performance focus: We plan thickness and coverage, not guess.
- Honest recommendations: If open cell fits better, we’ll say so.
- Residential + commercial: Crews ready for both scopes.
Related services
Closed Cell Spray Foam FAQs
Quick answers before you schedule.