Unique Dual Density Technology

RAINSCREEN DUO SLAB

ROCKWOOL RAINSCREEN DUO SLAB® is a non-combustible thermal insulation for ventilated rainscreen and overcladding applications. The Dual Density slab has a resilient surface for accepting mushroom-head fixings, whilst the underside absorbs any imperfections or unevenness in the substrate. The robust outer surface and inner face are also an effective protection against adverse weather conditions. 

The fibres of adjacent slabs knit together when tightly butt jointed, eliminating any gaps through which heat can be lost. Requiring minimal fixings, RAINSCREEN DUO SLAB® saves valuable time and money on installation. 

Alongside the excellent sound absorption properties offered by ROCKWOOL stone wool, the change in density between the two layers provides an additional benefit in that it causes soundwaves to be reflected at the interface, further enhancing the acoustic performance.

RAINSCREEN DUO SLAB® is the first stone wool product to receive BBA approval for use in ventilated rainscreen systems following rigorous testing regimes. ROCKWOOL Dual Density technology played a significant part in the recognition of the product.

Thermal ROCKFLOOR®

The unique dual density structure of Thermal ROCKFLOOR® means the slabs can absorb sub-floor imperfections on one side, and provide a high level of compressive strength on the other. The slabs are also easy to handle and fit.