Class A1 Non-Combustible Mineral Wool
Rockwool Slabs • Glasswool Blankets • Foil Facing
High-Performance Thermal Barrier & Acoustic Control
Mineral Wool Insulation (encompassing premium Rockwool and Glasswool) is an engineered fibrous insulation material manufactured from molten natural basalt rock and recycled glass minerals. Its densely intertwined microscopic fiber structure entraps millions of air pockets, creating an outstanding barrier against conductive and radiant heat transfer while delivering superior acoustic dampening.
Gapat Engineering supplies tested, fire-certified insulation systems custom-specified for pre-engineered steel buildings, under-deck roofing, and double-skin acoustic wall systems. With optional reinforced aluminum foil (FSK) facing, our mineral wool prevents vapor transmission and safeguards structural steel against condensation corrosion.
Class A1 Fire Resistance
- Non-combustible material with melting point exceeding 1000°C
- Emits zero toxic fumes or burning droplets in a blaze
- Delivers up to 2 to 4-hour certified fire barriers
- Meets strict global fire safety standards (ASTM E84 / BS 476)
Superior Thermal Barrier
- Extremely low thermal conductivity (k-value 0.034 W/mK)
- Drastically reduces interior heat gain in industrial sheds
- Reduces HVAC power consumption by up to 25–30%
- Stable thermal performance over decades of building life
Acoustic Sound Absorption
- Open fibrous matrix dampens heavy rain impact noise
- High Noise Reduction Coefficient (NRC up to 0.95)
- Absorbs machine reverberation in noisy factory bays
- Compliant with industrial occupational health acoustic norms
Moisture & Bio Resistance
- Water-repellent thermosetting resin treatment
- Non-hygroscopic fibers prevent mold, rot, and fungi growth
- Chemically neutral—does not corrode copper or steel fasteners
- Vermin, insect, and rodent proof structure
Mineral Wool Technical Specifications
IS 8183 • ASTM C612 • BS 476| Material Types | Rockwool (Basalt Rock fiber) & Glasswool (Borosilicate glass fiber) |
|---|---|
| Form Factor | Rigid / Semi-Rigid Slabs, Compressed Rolls, Wire Mesh Blankets |
| Density Range | 16 kg/m³ to 48 kg/m³ (Glasswool) | 48 kg/m³ to 144 kg/m³ (Rockwool) |
| Thermal Conductivity (k) | 0.034 to 0.040 W/m·K at 50°C mean temperature |
| Fire Classification | Class A1 Non-Combustible (BS 476 Part 4 / ASTM E84 Class 0) |
| Service Temperature | Up to 750°C (Rockwool) | Up to 250°C (Glasswool) |
| Facing Options | Alu-Foil FSK (Foil-Scrim-Kraft), Black Glass Tissue (BGT), Unfaced |
Typical Applications & Uses
PEB Roof Under-Deck Insulation
Double-Skin Wall Acoustic Facades
HVAC Air Duct & Chiller Insulation
Fire-Rated Partitions & Ceilings
DG Enclosures & Acoustic Booths
Cold Storage & Food Processing