What is ThermoSeal 5G?

ThermoSeal 5G is a Next Generation two component, semi-rigid, medium density, 1.7 lb closed cell polyurethane foam insulation system which simultaneously insulates and air-seals your building structure. Thermoseal 5G uses the latest generation, high performance blowing agent known as Solstice LBA developed by Honeywell. Sostice LBA has a Global Warming Potential “GWP” up to 99.9% of the products they replace. Thermoseal 5G requires the use of an “ “ component (ISO) and a blended “B” component (RESIN), which contains ZERO ozone depleting catalysts, polyols and re retarding materials.Thermo- Seal 5G is designed to make homes more energy efficient, quieter, healthier and more comfortable. ThermoSeal 5G is applied as a liquid spray which expands approximately 15 times its initial mass and cures within seconds into a semi-rigid mass. ThermoSeal 5G fills all building cavities completely sealing all cracks, crevices, and voids where air loss and inltration are most common.

Contractor & Applicator Benefits

With continuous research and development, ThermoSeal continues to lead the spray foam insulation industry in both quality and diversity of spray foam products. Our products insulation performance is the clear winner in energy savings, sound control, moisture vapor permeance, lifespan, and cellular structure, therefore reducing waste and cost at the same time.

  • Sprayability  – Easy to spray with a more controlled rise, resulting in less waste

  • Predictability – Provides consistent & predictable yields

  • Advantages  – Vapor barrier, high-yield, passed appendix-X (No ignition barrier needed)
  • R-Value  – One of the highest aged R-Values in the industry today

Technical Details

Physical Properties

Property Value Test Method
R-Value 7.1 @ 1″ ASTM C 518
Core Density 1.7 lb/ft ³ ASTM D 1622
Open Cell Content > =92% ASTM D 2586

Download Full Technical Data Sheet for All Properties

Fire Properties

Property Value Test Method
Surface Burning Class 1 Pass ASTM E 84
Smoke Index < 450
Flame Spread < 25
Ignition Barrier Complies with the applicable requirements of ICC-ES AC377 Appendix X for use in attics and crawlspaces without a prescriptive ignition barrier. ICC-ES AC377 Appendix X
Thermal Barrier Pass using DC315 manufactured by International Fireproof Technology, Inc at (88.88 sq. ft./gal @ 18 mils wet and 12 mils dry) coverage rate of 1.136 gallons (4.3 L) per 100 square feet (9.3 m2) NFPA 286

Evaluation Report

Property Value Test Method
Evaluation Report IN PROGRESS IAPMO ES


Techincal Data Sheet
A-Sided Safety Data Sheet

Code Reports


Need help with ThermoSeal 5G?

Contact us below and we’ll be glad to answer any of your questions related to ThermoSeal 360 or any of our other spray foam products.

Contact Us Online