Igloo Insulation LLC
ClaimTypical insulation services: Attic insulation, Spray foam, Blown-in insulation, +2 more
What to Compare
Compare Open Cell Spray Foam and Closed Cell Spray Foam using r-value per inch, vapor permeability, cost per sq ft. Check the exact product or local service proposal, then request matching written terms before choosing for your Florida home. Use the differences below to identify the questions that matter for your project.
Head-to-Head Breakdown
Open Cell Spray Foam
Features and considerations
- Fills large cavities well
- R-3.5–3.7 per inch
Limits and questions
- Permeable to moisture
- Can trap moisture in humid FL climate
- NOT a vapor barrier
- Requires vapor barrier added in FL applications
Closed Cell Spray Foam
Features and considerations
- Full vapor barrier (critical in FL)
- R-6 to R-7 per inch
- Adds structural strength to roof deck
- Completely resists moisture infiltration
Limits and questions
- Requires trained professionals
- Difficult to modify later
Side-by-Side Comparison
| Open Cell Spray Foam | Closed Cell Spray Foam | |
|---|---|---|
| R-Value per Inch | R-3.5–3.7 | R-6 to R-7 |
| Vapor Permeability | Open (moisture passes through) | Closed (vapor barrier) |
| Cost per Sq Ft (2" application) | Request an itemized quote for Open Cell Spray Foam; compare the same scope and payment period. | Request an itemized quote for Closed Cell Spray Foam; compare the same scope and payment period. |
| Moisture Resistance in FL | Ask for evidence for the exact Open Cell Spray Foam product or local service; match it to your project conditions. | Ask for evidence for the exact Closed Cell Spray Foam product or local service; match it to your project conditions. |
| Structural Reinforcement | None | Yes (stiffens roof deck) |
| Sound Attenuation | Ask the Open Cell Spray Foam provider to document sound attenuation for the exact offer. | Ask the Closed Cell Spray Foam provider to document sound attenuation for the exact offer. |
| Best FL Application | Ask the Open Cell Spray Foam provider to document current quote and terms for the exact offer. | Ask the Closed Cell Spray Foam provider to document current quote and terms for the exact offer. |
| Inches Needed for R-38 | ~10.5 inches | ~5.5 inches |
Frequently Asked Questions
Which spray foam should I use in a Florida attic?
Closed cell spray foam is strongly preferred for Florida attics. Open cell foam allows this moisture to pass through, potentially causing condensation and mold. Closed cell at 3–4 inches on the roof deck creates a true vapor barrier and conditioned attic.
Can I mix open and closed cell foam in Florida?
Open cell can be used in interior walls for soundproofing where moisture isn't the concern.
Is spray foam worth it in Florida?
It also strengthens the roof deck and eliminates the hot, humid, unconditioned attic space that shortens HVAC equipment life.
Consumer resources
Use these official resources when evaluating an offer. They provide general guidance and do not establish a winner between these options.
- FTC: checking home-repair offers and written agreements — General consumer guidance; not evidence of either brand's price or performance.
Browse Florida Insulation Listings
These public listings share the broad insulation category. Inclusion does not confirm that a business supplies the products or specialist services discussed above. Ask about the exact work, credentials and current availability before requesting a quote.
Insulation Plus of Tampa
ClaimTypical insulation services: Attic insulation, Spray foam, Blown-in insulation, +2 more
I-Foam & Insulation Inc
ClaimTypical insulation services: Attic insulation, Spray foam, Blown-in insulation, +2 more