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Application areas

Heat- and sound insulation of horizontal, inclined and vertical structures where thermal insulation is not under external load such as mansards, frame walls, walls with siding, floors and fl oor structures, partitions in cottages and low-rise buildings.

Description of material

ROKLIGHT are nonflammable, waterproofing, heat- and sound insulating slabs made of basalt rock stonewool with a low-phenol binder.


The slabs must be stored in covered warehouses. Storage under an awning protecting the slabs from atmospheric precipitation is permitted. slabs during storage should be laid in containers or in piles on pallets or linings. The piling height during storage should not exceed 2 m.

Basic physical and mechanical properties

Thermal conductivity, W/m*C  25 0,039 
Compressibility, % not more 30 
Vapor permeability, mg/(m*h*Pa), not less than 0,3 
Humidity by weight, %, no more than 0,5 
Water absorption by volume, %, no more than 2,0 
Content of organic substances, %, no more than 2,5 
Flammability grade NG 
Density, kg/m3 30-40 
Length, mm  1000, 1200 
Width, mm   500, 600  
Thickness (with increments of 10 mm), mm 50, 100