Tremco Illmod 600

Tremco Illmod 600


Minimal surface preparation required

Pre-Compressed Impregnated Foam Seal for Expansion Joints. Illmod® 600 is a UV stable, pre-compressed, self-expanding, flexible, flame-resistant joint seal. It is a high-density polyurethane foam that is impregnated with a modified acrylic resin and treated with a pressure-sensitive adhesive on one side for ease of installation. Illmod 600 self-expands to fill the joint creating an elastic, vapor-permeable, weathertight seal.

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What the experts have to say

Gold Certification
Standard: UL 2818 - 2013 Gold Standard for Chemical Emissions for Building Materials, Finishes and Furnishings. Number: 23107-420 Certification Status: Certified.
  • Remains permanently flexible

  • Low volatility

  • Chemically compatible with many types of commercial construction substrates

  • Compatible with several Tremco sealants

  • No mixing or masking

  • Can be painted over with water-based, flexible paint

  • Minimal surface preparation required

  • Proven wind driven rain resistance since 1965

  • Compatible with most porous or sensitive substrates

Black and grey
5.5 to 6.5 lb/ft³
Tensile strength:
21 psi minimum
Thermal resistance:
3.3 to 3.6 hr x F x ft²/BTU
Thermal conductivity:
0.28-0.30 BTU-in/hr-F-ft²
120% +/-20%
Uniform static pressure:
12 psf
Fire testing:
Flame spread: 0
Chemical compatibility:
No signs of corrosion on zinc, steel, galvanized steel, aluminum, and copper. No adverse chemical effects with concrete, lightweight concrete, brick, natural stones, plexiglas, or wood
Full Information:
Check out the full datasheet available in the Downloads section!