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Home / Products / Div 07 — Thermal & Moisture Protection / Thermafiber Safing Mineral Wool Insulation
MINERAL WOOL BATT
Div 07 · Thermal & Moisture Protection

Thermafiber Safing Mineral Wool Insulation

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Owens Corning · Thermafiber Safing

Compression-fit mineral wool safing that seals the perimeter void between the floor slab edge and the exterior wall in perimeter fire containment systems.

✓ Verified 2026-08-28
Specs on this page were checked against Owens Corning Thermafiber Safing data sheet on 2026-08-28.

Specifications

Density4.0 lb/ft3 and 6.0 lb/ft3
Thickness1 in to 7 in (4.0 pcf); 2, 3, 4, 6 in (6.0 pcf)
R-value4.3 per inch

Certifications & Standards

ASTM C612
ASTM C665
ASTM E84
ASTM E96
ASTM E136
ASTM E814
ASTM E2307
UL 2079
Attributes — product claims, not third-party certifications
NoncombustibleMineral woolUL reference designation TYPE SAF

Sustainability

Recycled Content
Minimum 70%