Div 07 · Thermal & Moisture Protection
3M Fire Barrier Sealant CP 25WB+
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3M · CP 25WB+
A gun-grade latex intumescent firestop sealant that dries to a monolithic seal in joints and penetrations.
✓ Verified 2026-08-28
Specs on this page were checked against 3M CP 25WB+ technical data sheet on 2026-08-28.
Specifications
| Expansion | Minimum 3x dried volume above 1000F |
| VOC content | Less water and exempt solvents, under 1 g/L |
| Acoustics | STC 54 when tested in an STC 54 wall assembly |
Certifications & Standards
UL 1479
UL 2079
ASTM E814
ASTM E1966
Attributes — product claims, not third-party certifications
IntumescentLatex-basedGun grade
Sustainability
No sustainability metrics on file for this product.