insulation
Mineral wool batt
Stone-or-slag-derived fiber batts. Higher density than fiberglass; better fire resistance, better acoustic performance, water-resistant.
Cost tier
MID
Cost / sqft
$1–$2.5
Install
trade
Durability
high
Maintenance
low
Moisture
good
Cost notes
Common spec for interior demising walls + bedroom-bathroom walls for sound. Holds shape better than fiberglass during install.
Aesthetic
- Finish: concealed
- Color range: dark gray-brown
- Visual weight: light
Climate suitability
✓ Hot-humid
✓ Hot-dry
✓ Mixed-humid
✓ Mixed-dry
✓ Cold
✓ Arctic
Source
Architectural Graphic Standards — Architectural Graphic Standards (Ramsey/Sleeper) — Materials chapter
Tags: mineral-wool, batt, fire-resistant, acoustic