The Last Insulation Your Building Will Ever Need.

Why Top Builders Choose ThermoSeal

Spray foam isn't just better insulation; it makes the whole build perform better from framing through buyer handoff.

Higher HERS Scores

Spray foam virtually eliminates air infiltration, the largest single factor in HERS ratings. ThermoSeal-insulated homes routinely achieve ENERGY STAR certification and sell at a premium.

Faster Enclosure

ThermoSeal closed cell foam reaches full density in seconds. One pass achieves code-minimum R-values without multiple layers of batts, vapor barrier, and separate air barrier systems.

No Ignition Barrier (Attics)

ThermoSeal HFO is approved for unvented attic and crawl space use without an ignition barrier per ICC-ES AC377 Appendix X. Fewer materials, faster inspection, cleaner detail.

Structural Racking Strength

ThermoSeal closed cell foam bonds to framing and adds racking strength to wall assemblies: compressive strength up to 29.5 PSI, tensile up to 56.8 PSI. Less reliance on sheathing in some assemblies.

Lifetime Warranty for Buyers

ThermoSeal's lifetime warranty transfers to new owners, a powerful selling point that distinguishes your homes from builders still using fiberglass batts. Offer it as a marketing feature.

Moisture & Vapor Control

ThermoSeal HFO reaches 0.86 perms at just 1.37", meeting Class II vapor retarder requirements in most climate zones. Eliminates the need for a separate poly vapor barrier in wall assemblies.

Residential & Commercial Applications

ThermoSeal products are engineered for every build type, from single-family homes to large commercial wall assemblies.

New Construction

Residential New Builds

Achieve tighter envelopes from day one. ThermoSeal spray foam eliminates the need for separate air barriers, vapor barriers, and ignition barriers in attic assemblies, simplifying your build sequence and reducing subcontractor coordination.

  • Open cell (500/800) in walls, attics, and floors for air sealing and sound control
  • Closed cell HFO in crawl spaces, basements, and exterior roof decks
  • No ignition barrier required in unvented attics (HFO, AC377 Appendix X)
  • Single system achieves air barrier + vapor retarder in one pass
  • ENERGY STAR and IECC code compliant across all climate zones
Retrofit & Remodel

Retrofit & Renovation Projects

Spray foam's ability to conform to irregular cavities and reach difficult-to-access areas makes it ideal for retrofit applications where batts simply can't provide a reliable air seal.

  • Rim joists, band joists, and floor cavities
  • Attic conversions and knee wall enclosures
  • Existing crawl space encapsulation
  • Historic building envelope upgrades without structural modification
  • Sound control between occupied units (open cell, NRC 0.75)
Commercial

Commercial & Industrial Builds

ThermoSeal 5G is built for the demands of commercial construction: NFPA 285 compliant for Type I–IV buildings of any height, with the structural performance commercial projects require.

  • NFPA 285 compliant for exterior wall assemblies (5G only)
  • Type I, II, III, IV buildings of any height per 2015/2018/2021 IBC
  • Compatible with brick, metal, and aluminum cladding systems
  • Tensile strength of 56.8 PSI for demanding structural applications
  • Cold-weather formulations available for year-round commercial scheduling
High-Wind & Coastal

High-Wind Zone & Coastal Construction

ThermoSeal HFO is rated for 286 mph wind uplift (UL 1897), ideal for hurricane zones, coastal builds, and IBHS Fortified Home certifications.

  • 286 mph wind uplift rating (UL 1897 / ASTM E 330)
  • Approved for IBHS Fortified Home roof assemblies
  • Class II vapor retarder protects against coastal moisture infiltration
  • Eliminates separate roof underlayment in qualifying assemblies
  • Structural bond adds redundant uplift resistance at rafter connections

Specify the Right Product for Each Application

Four products cover every project requirement. Key distinction: only ThermoSeal 5G has NFPA 285 for commercial exterior walls.

Open Cell

ThermoSeal 500

R-4.1/inch · 0.5 lb/ft³ · GWP 1 · IAPMO ER-0603

Water blown, 100x expansion, NRC 0.75 sound dampening, STC 39. Air impermeable per IRC/IBC/IECC. Ideal for interior applications where sound control and air sealing are primary goals.

Best for:
  • Interior walls & attics
  • Cathedral ceilings
  • Multi-family sound control
Open Cell

ThermoSeal 800

R-4.5/inch · 0.75 lb/ft³ · GWP 1 · IAPMO ER-0603

Enhanced density open cell, 75x expansion, NRC 0.65. Superior dimensional stability vs. 500. Preferred for applications requiring higher density and improved structural performance from an open cell product.

Best for:
  • Walls requiring higher density
  • Noise-sensitive builds
  • Retrofit wall cavities
Closed Cell

ThermoSeal HFO

R-7.4/inch · 2.0 lb/ft³ · GWP 1 · IAPMO ER-0698

HFO blown (Forane 1233zd), vapor barrier at 2", 286 mph wind uplift, no ignition barrier in attics. Does NOT have NFPA 285; do not specify for commercial exterior wall assemblies requiring NFPA 285.

Best for:
  • Crawl spaces & basements
  • Exterior walls & roof decks
  • High-wind & coastal builds
Closed Cell

ThermoSeal 5G

R-7.3/inch · 2.0 lb/ft³ · GWP 1 · NFPA 285 · IAPMO ER-0698

Commercial and industrial grade. Only ThermoSeal product with NFPA 285 compliance for exterior wall assemblies. Higher tensile strength (56.8 PSI) vs. HFO. Required for Type I–IV commercial buildings.

Best for:
  • Commercial exterior walls (NFPA 285)
  • Industrial buildings
  • Type I–IV construction

Common Builder Questions

Answers to the technical and specification questions builders ask most.

Yes. ThermoSeal HFO closed cell foam provides a water vapor permeance below 1 perm at typical application thicknesses (0.86 perms at 1.37", ASTM E 96), meeting Class II vapor retarder requirements of IRC Section R702.7 for most climate zones. This eliminates the need for a separate poly vapor barrier membrane in wall and floor assemblies, simplifying the build sequence.
No. ThermoSeal HFO is approved for use without an ignition barrier in unvented attic and crawl space applications per ICC-ES AC377 Appendix X. This saves time and materials. A thermal barrier (1/2" drywall) is still required in occupied living spaces per IBC/IRC.
Spray foam significantly improves HERS scores by virtually eliminating air infiltration, the largest single contributor to energy loss in new homes. Builders using ThermoSeal typically achieve HERS scores 15–30 points lower than homes built with fiberglass batts, making homes eligible for ENERGY STAR certification and commanding premium resale prices.
ThermoSeal 5G is the only product with NFPA 285 approval for commercial exterior wall assemblies on Type I–IV buildings of any height with brick, metal, or aluminum cladding (2015/2018/2021 IBC). ThermoSeal HFO does not have NFPA 285 approval and must not be used in applications requiring it.
ThermoSeal HFO and 5G closed cell foam bond rigidly to framing and sheathing, adding measurable racking strength to wall assemblies. HFO provides 27.43 PSI compressive and 48.64 PSI tensile strength. 5G provides 29.5 PSI compressive and 56.8 PSI tensile strength. This structural contribution can reduce requirements for additional sheathing in some wall assemblies.

Ready to Build Tighter Homes & Buildings?

Talk to a ThermoSeal representative about volume pricing, certified installer referrals for your projects, and full spec support.

1-800-853-1577