ThermoSeal ONE Medium Density • Closed Cell Spray Foam Insulation

What is ThermoSeal ONE?

ThermoSeal ONE is a 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 ONE requires the use of an “A” component (ISO) and a blended “B” component (RESIN), which contains ZERO ozone depleting catalysts, polyols and fire retarding materials. ThermoSeal ONE is designed to make homes more energy efficient, quieter, healthier and more comfortable. ThermoSeal ONE is applied as a liquid spray which expands approximately 15 times its initial mass and cures within seconds into a semi-rigid mass. ThermoSeal ONE fills all building cavities completely sealing all cracks, crevices, and voids where air loss and infiltration 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 7.2 @ 1" ASTM C 518
Core Density 1.7 lb/ft³ ASTM D 1622
Closed Cell Content >= 92% ASTM D 2586
Download Full Technical Data Sheet for all properties

Fire Properties

Property Value Test Method
Surface Burning Characteristics 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 IAPMO ER-0602 IAPMO ES

Have questions? Give us a call at 1-800-853-1577.

About Us

ThermoSeal brand products produce cleaner, healthier living environments by reducing airborne allergens as well as virtually eliminating mold and mildew within our homes. Read more about us.

Our Contact Info

PO Box 32,
New Canaan, CT 06840

1-800-853-1577