Rockwool boards, also known as thermal insulation and decorative rockwool boards, are inorganic fiber boards made by melting basalt at high temperatures. They were successfully trial-produced in June 1981. Rockwool boards are a new type of thermal insulation, fire-retardant, and sound-absorbing material.
Rockwool board features
Fire-resistant
Exterior rock wool board raw materials are made from natural volcanic rock, which is a non-combustible building material and fire-resistant material.
Key Fire Retardant Features:
○ High fire resistance rating A1, effectively prevents the spread of fire.
Size is extremely stable; it does not elongate, contract, or deform in fires.
High-temperature resistant, melting point above 1000°C.
No smoke or burning droplets/particles produced in fire.
Will not release harmful environmental substances and gases in fires.
Insulation and thermal protection
The exterior rock wool board features fine, long, and flexible fibers with low slag content. Consequently, it boasts a low thermal conductivity and excellent insulation properties.
Acoustic noise reduction
Rock wool is an ideal sound insulation material, with its abundant long, fine fibers forming a porous interconnected structure, determining that Sika Rock wool is a sound-absorbing and noise-reduction material.
Hydrophobic
Water-repellent rock wool products have a water-repellency rate of up to 99.9%; low water absorption, no capillary penetration.
Moisture resistance properties
Rock wool has a moisture absorption rate of less than 0.2% in environments with high relative humidity. The quality absorption rate is less than 0.3% when tested according to the ASTM C1104 or ASTM 1104M method.
Non-corrosive
Rock wool has stable chemical properties with a pH value of 7-8, neutral or slightly alkaline, and is suitable for carbon steel and stainless steel.
Aluminum and other metal materials are all non-corrosive.
Safety & Environmental Protection
Rock wool is tested to be free of asbestos and harmful substances to the environment such as CFCs, HFCs, HCFCs, etc. It is not corroded or prone to mold and bacterial growth.