Div 07 · Thermal & Moisture Protection
SpecSeal LC Endothermic Firestop Sealant
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Specified Technologies Inc. · SpecSeal LC150
A high-solids, latex-based endothermic firestop compound gunned or trowelled into construction joints and penetrations.
✓ Verified 2026-08-28
Specs on this page were checked against STI SpecSeal LC product data sheet on 2026-08-28.
Specifications
| Movement capability | +/- 12.5%, or 25% in compression only, through 500 cycles per UL 2079 |
| VOC content | 57 g/L |
| Catalog number | LC150 (10.1 oz cartridge) |
Certifications & Standards
UL 2079
UL 1479
ASTM E1966
ASTM E814
Attributes — product claims, not third-party certifications
EndothermicLatex-basedGun or trowel appliedCAN/ULC-S115 tested
Sustainability
No sustainability metrics on file for this product.