Rainscreen masonry.
PARTIALLY FILLED CAVITY WALLS

Application Overview

A partial fill cavity features thermal insulation secured to the inner steel or timber framing system, leaving a cavity of air between the insulation and the masonry outer leaf.

The cavity between the insulation and the outer leaf performs as a barrier to external moisture, preventing it from tracking to the inner construction.

In addition to thermal properties, fire performance of insulation materials is a crucial consideration, when the building is to have high occupancy levels or have vulnerable occupants. Our Mineral Wool insulation solutions provide the required thermal and fire performance and can be installed on buildings of any height.

DID YOU KNOW?

Rocksilk® RainScreen Slab is BBA certified for the broadest range of build-ups and the widest range of thicknesses of any rainscreen solution on the market.

You can use Rocksilk® RainScreen Slab in partially filled masonry cavities in areas of ‘very severe’ exposure zones without having to render or clad the outer leaf. It has a Euroclass A1 reaction to fire classification. It is also manufactured using ECOSE® Technology, our unique bio-based binder which contains no added formaldehyde or phenol. It is soft to touch, easy to handle and generates low levels of dust and VOCs.

Rocksilk® RainScreen Partial Fill BBA Certificate Rocksilk® RainScreen Partial Fill Install Guide

RECOMMENDED PRODUCTS

(in external rainscreen zone)

RECOMMENDED PRODUCTS

(between light steel frame studwork)

OTHER SUITABLE PRODUCTS

(between light steel frame studwork)

We provide FREE 3D U-value calculations for rainscreen façade systems Contact our Technical Support Team for details on 01744 766 666 or technical.uk@knaufinsulation.com

Available insulation CPD course

Non-combustible insulation solutions for rainscreen façade systems

  • Fire regulations related to Rainscreen Façade Systems

  • Considerations for buildings over 18m in height

  • Your options as a designer to achieve compliance and minimise risk

   Book your CPD today

WHY MINERAL WOOL?

  • Mineral Wool provides the best combination of thermal, fire safety and acoustic performance.

  • Compliance with reaction to fire classification requirements in Building Regulations without the need for system testing or desktop studies.

Download our Solutions Guide U-value Tables

DID YOU KNOW THAT ROCKSILK® RAINSCREEN SLAB AND OMNIFIT® SLAB 35 ARE SPECIFIED IN THE KNAUF THROUGHWALL SYSTEM?

The Knauf ThroughWall system is designed to meet required building performance while allowing a flexibility of external finishes to be applied, such as rainscreen cladding and brickwork.

For full information on the system performance, installation method and standard details click here.