ThermoSeal 500 Light Density • Open Cell Spray Foam Insulation

What is ThermoSeal 500?

ThermoSeal 500 is a two component, semi-rigid, totally water blown, .5lb light density polyurethane foam insulation system which simultaneously insulates and air-seals your building structure. Thermoseal 500 requires the use of an "A" component (ISO) and a blended "B" component (RESIN), which contains ZERO ozone depleting blowing agents, catalysts, polyols and fire retarding materials. ThermoSeal 500 is designed to make homes more energy efficient, quieter, healthier and more comfortable. ThermoSeal 500 is applied as a liquid spray which expands approximately 100 times its initial mass and cures within seconds into a semi-rigid mass. ThermoSeal 500 fills all building cavities completely, sealing all cracks, crevices, and voids where air loss and infltration are most common. If needed, excess material is easily trimmed off leaving a surface ready for drywall.


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
  • Ease of Use - Constant mixing is not required
  • R-Value - One of the highest aged R-Values in the industry today

Technical Details

Physical Properties

Property Value Test Method
R-Value 3.7 @ 1" ASTM C 518
Core Density 0.5 LB / Cubic Foot ASTM D 1622
Open Cell Content > 97% ASTM D 6226
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 Pass using DC315 manufactured by International Fireproof Technology, Inc at 4 Wet Mils - 3 Dry Mils 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 #ESR-3235 ICC Council

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