# ComfortSeal

> ComfortSeal is a spray polyurethane foam (SPF) insulation brand from USAFoam, LLC of Mandeville, Louisiana. It makes two products — ComfortSeal 500 open cell and ComfortSeal HFO closed cell — both evaluated by IAPMO Uniform Evaluation Service, sold to insulation contractors and installed by a certified installer network for builders, architects and home and building owners. Phone: (855) 362-6863 (Mon–Fri, 8am–5pm Central). Email: sales@usafoam.co.

Key facts:
- Two products: ComfortSeal 500 (open cell, IAPMO ER-974) and ComfortSeal HFO (closed cell, IAPMO ER-975).
- Both products are Class I for flame spread (≤25) and smoke developed (≤450) per ASTM E84.
- ComfortSeal HFO uses an HFO blowing agent with a global warming potential of 1; ComfortSeal 500 is water blown.
- Installs by certified ComfortSeal installers carry a limited lifetime warranty on the foam, for the life of the home; installation workmanship is the installing contractor's responsibility.
- Technical data sheets and evaluation reports are published and linked from the tech library.
- Sold to insulation contractors by USAFoam, LLC; not sold to homeowners or as a DIY kit. Installer certification is a free online 12-module course; certificates (CS-YYYY-NNNNN) are valid two years and publicly checkable.
- ComfortSeal does not publish installed prices and makes no energy-savings, payback or health claims.

## Products

- [ComfortSeal 500](https://comfortsealusa.com/comfortseal-product-500.html): Open cell, 0.5 lb/ft³, R-13 at 3.5 inches and R-20 at 5.5 inches (IAPMO ER-974 Table 1), water blown, NRC 0.75 and STC 39 sound control, air leakage under 0.002 L/s·m² (ASTM E283), expands roughly 100 times. IAPMO ER-974.
- [ComfortSeal HFO](https://comfortsealusa.com/comfortseal-product-hfo.html): Closed cell, 2.0 lb/ft³, R-25 at 3.5 inches and R-39 at 5.5 inches (IAPMO ER-975 Table 1), HFO blowing agent with GWP 1, Class II vapor retarder at 0.45 perms at 2 inches, wind uplift rated to 210 psf (UL 1897), no ignition barrier coating in service-only attics and crawl spaces (ICC-ES AC377 Appendix X, within ER-975 thickness limits). IAPMO ER-975.
- [Compare both products](https://comfortsealusa.com/comfortseal-products.html)
- [R-value calculator](https://comfortsealusa.com/comfortseal-rvalue-calculator.html): Installed thickness for a target R-value, or R-value for a thickness, answered only from the published IAPMO Table 1 of each report.

## Who it is for

- [Insulation contractors](https://comfortsealusa.com/comfortseal-contractors.html): 1:1 systems for standard proportioners, local supply, certification and a warranty to sell with.
- [Builders and developers](https://comfortsealusa.com/comfortseal-builders.html): Air sealing and insulation in one trade visit.
- [Architects and specifiers](https://comfortsealusa.com/comfortseal-architects.html): Full ASTM property table and evaluation reports.
- [Home and building owners](https://comfortsealusa.com/comfortseal-homeowners.html): Comfort, quiet and lower heating and cooling costs.

## Documentation

- [Technical library](https://comfortsealusa.com/comfortseal-document-downloads.html): Data sheets for both products and links to IAPMO evaluation reports ER-974 and ER-975.
- [IAPMO ER-974 (ComfortSeal 500)](https://forms.iapmo.org/ues_reports/reports/ER_0974.pdf)
- [IAPMO ER-975 (ComfortSeal HFO)](https://forms.iapmo.org/ues_reports/reports/ER_0975.pdf)

## Key pages

- [Homepage](https://comfortsealusa.com/): Overview of both products, who installs them, and the warranty.
- [Find a certified installer](https://comfortsealusa.com/comfortseal-find-installer.html): Request a ComfortSeal-certified installer; ComfortSeal is not sold to homeowners or as a DIY kit.
- [Benefits of spray foam](https://comfortsealusa.com/comfortseal-benefits.html): Air sealing, sound control (NRC 0.75 / STC 39 for ComfortSeal 500), moisture control and fire performance, with test methods.
- [What is spray foam insulation?](https://comfortsealusa.com/comfortseal-what-is-spray-foam.html): What spray polyurethane foam is, how it is installed, open vs. closed cell, and common questions.
- [Limited lifetime warranty](https://comfortsealusa.com/comfortseal-warranty.html): Limited lifetime warranty on the foam for the life of the home; workmanship is the installing contractor's responsibility.
- [Installer training and certification](https://comfortsealusa.com/comfortseal-training-landing.html): Online installer portal — register a company, add crew, twelve modules with quizzes (80% to pass) and a final exam; certificates are issued automatically, valid two years, and can be checked at https://comfortsealusa.com/comfortseal-verify.html.
- [About ComfortSeal](https://comfortsealusa.com/comfortseal-about.html): USAFoam, LLC of Mandeville, Louisiana makes ComfortSeal, holds the evaluation reports and certifies the installers.
- [Contact](https://comfortsealusa.com/comfortseal-contact.html): Phone (855) 362-6863, Mon–Fri 8am–5pm Central; email sales@usafoam.co; contact form by topic.
- [Blog](https://comfortsealusa.com/comfortseal-blog.html): All guides, for homeowners and for installers.

## Guides

- [Spray Foam R-Value by Thickness: What the IAPMO Reports Actually Say](https://comfortsealusa.com/comfortseal-blog-rvalue-by-thickness.html): The published IAPMO Table 1 R-values for both foams, why they are not linear, and how to match thickness to 2x4 and 2x6 cavities.
- [Ignition Barrier vs. Thermal Barrier: What Spray Foam Needs, and Where](https://comfortsealusa.com/comfortseal-blog-ignition-vs-thermal-barrier.html): Where each barrier applies, what AC377 Appendix X and NFPA 286 test, and the coatings and thicknesses listed in ER-974 and ER-975.
- [How to Read a Spray Foam Technical Data Sheet](https://comfortsealusa.com/comfortseal-blog-how-to-read-a-data-sheet.html): A row-by-row guide to a data sheet: R-value, density, cell content, vapor permeance, fire rows, storage and processing.
- [Unvented Attics with Spray Foam: How They Work and When to Use Them](https://comfortsealusa.com/comfortseal-blog-unvented-attics.html): How an unvented attic works, IRC R806.5, the ER-975 no-coating conditions, and managing attic humidity.
- [Is Spray Foam Insulation Worth It? An Honest Guide for Homeowners](https://comfortsealusa.com/comfortseal-blog-is-spray-foam-worth-it.html): Pros and cons of spray foam for a home, including odor during application and the thermal barrier requirement, and when it is not the right call.
- [Spray Foam vs. Fiberglass Insulation: An Honest Comparison](https://comfortsealusa.com/comfortseal-blog-spray-foam-vs-fiberglass.html): How spray foam and fiberglass compare on R-value, air sealing, moisture, fire safety and cost.
- [Spray Foam in Crawl Spaces: What to Know Before You Insulate](https://comfortsealusa.com/comfortseal-blog-crawl-space-spray-foam.html): Vented vs. closed crawl spaces under IRC R408, rim joists, moisture, radon and termites, and the coating rules for crawl spaces.
- [How Much Does Spray Foam Insulation Cost? What Drives the Price](https://comfortsealusa.com/comfortseal-blog-spray-foam-cost.html): Cost drivers, cited third-party price ranges and a checklist for comparing written quotes. ComfortSeal does not publish installed prices.
- [Spray Foam in Humid & Coastal Climates: What Gulf Coast Builders Need to Know](https://comfortsealusa.com/comfortseal-blog-spray-foam-humid-coastal-climates.html): Vapor control, fungi resistance and the 210 psf wind uplift rating of closed cell foam on the Gulf Coast.
- [Spray Foam Insulation in Louisiana and the Gulf South: What Builders and Homeowners Should Know](https://comfortsealusa.com/comfortseal-blog-spray-foam-louisiana.html): Louisiana's statewide climate zone 2A rule, the 2021 IRC and IECC in force, no interior poly in hot-humid walls, termite clearance under IRC R318.4, FEMA TB 2 below the base flood elevation, wind design and raised floors.
- [Why Air Sealing Matters for Energy Bills](https://comfortsealusa.com/comfortseal-blog-spray-foam-energy-savings.html): Why air leakage, not R-value alone, drives heating and cooling costs, explained without savings promises.
- [Open Cell vs. Closed Cell Spray Foam: Which Does Your Project Need?](https://comfortsealusa.com/comfortseal-blog-open-cell-vs-closed-cell.html): How ComfortSeal 500 and ComfortSeal HFO differ in R-value, vapor control, sound and expansion, and which assembly each suits.

## Certificates

- [Verify a certificate](https://comfortsealusa.com/comfortseal-verify.html): Enter a certificate number to confirm the holder, company and whether it is current.

## Optional

- [Full reference for language models](https://comfortsealusa.com/llms-full.txt)