Thermal Insulation Cavity Slab 32

ROCKWOOL Thermal Insulation Cavity Slab 32 is a full and partial fill stone wool slab designed for the thermal insulation of masonry cavity walls.

Suitable for use in new builds, renovations or extensions, the slabs are easy to handle and simple to install - just friction fit, without precise cutting for an accurate fit against the blockwork.

Thermal Cavity Slab 32 has a more efficient fibre structure that increases the density of air pockets trapped within each slab. This results in a 13% improvement in thermal performance over our standard stone wool cavity slab¹

In 2024, we’re updating the packaging used to protect our Trade Range products to improve its impact on the environment. We’ll be rolling this new look product packaging out across our range throughout the year, so soon you’ll start to see a change on the shelves.

• Low thermal conductivity of 0.032 W/mK
• Thermal Cavity Slab 32 is able to resist temperatures of over 1,000ºC and achieves the highest Euroclass A1 non-combustibility classification as defined in EN13501-1.
• The slabs come in a 455mm width to suit standard vertical wall tie spacings allowing a closely knitted joint with adjacent slabs
• Water repellent

  ^{1 13% improvement is based on the 0.37 lambda value of standard ROCKWOOL Thermal Cavity Batt 37}  

Specification

_{*Thickness options may be subject to a minimum production volume. Speak to the specification team for guidance.} 

Standards and Certification

Technical Properties

Thermal Performance

Full Fill Application

102mm facing brick outer skin, ROCKWOOL Thermal Insulation Cavity Slab 32 Full Fill, 100mm internal concrete block (various densities) Internal finishes: plasterboard on dab.

Partial Fill Application

102mm facing brick outer skin, 50mm clear cavity space, ROCKWOOL Thermal Insulation Cavity Slab 32, 100mm internal concrete block (various densities) Internal finishes: plasterboard on dab.