Knauf Insulation launches ‘gateway-ready’ rainscreen cavity systems

KNAUF Insulation has announced the launch of Rocksilk RainScreen Cavity Systems, a range of complete tested systems designed to simplify specification and support compliance in cladding and masonry façades.

The systems consist of sheathing insulation, fixings, and cavity barriers.

“The Building Safety Act places much more scrutiny on everyone working on high-risk buildings,” explained Luke Davies, rock mineral wool product manager at Knauf Insulation. “The ‘gateways’ it introduces, plus the ever-stricter compliance criteria of the Building Regulations, mean it’s never been more important to get your specification right. That’s why we’ve launched these systems – to make it easier for specifiers to meet these challenging requirements with a single system, backed up by rigorous test data.”

The Rocksilk RainScreen Cavity Systems combine existing Knauf Insulation rainscreen products with a series of new cavity barrier solutions, including open state cavity barriers with an intumescent strip, a closed state cavity barrier, and further additions to Knauf Insulation’s face-fixed masonry cavity barrier range launched last year.

The firm added that the full range of cavity barriers enables specifiers to choose the system that best meets their fire performance needs, confident it has been tested to the relevant standards. Rocksilk RainScreen Cavity Systems can be used with major substrate types, including blockwork, steel, and timber.

The full range of cavity barriers consists of:

Rocksilk RainScreen FireStop Slab is a cavity barrier manufactured from rock mineral wool, suitable for use as a vertical cavity barrier in buildings with a ventilated cavity, and vertically and horizontally in buildings with masonry façades.

Rocksilk RainScreen OSCB and OSCB Plus are horizontal cavity barriers manufactured from rock mineral wool, shrink wrapped with a reactive intumescent strip, for use in ventilated cavities up to 450mm.

Rocksilk RainScreen FFCB is a patented cavity barrier made from rock mineral wool, that is designed to be face-fixed to Rocksilk RainScreen Slab as the masonry façade is constructed.