Thermal Insulation Cavity Slab 32
ROCKWOOL® Thermal Insulation Cavity Slab 32 is a full and partial fill stone wool slab for the thermal insulation of masonry cavity walls.
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Application(s)
- External Wall
- Cavity Wall
Product description
Thermal Insulation Cavity Slab 32 is a full and partial fill insulation solution for external and party masonry walls.
Thermal Insulation Cavity Slab 32 is manufactured using NyRock® technology, a patented production process that creates a more thermally efficient fibre structure than standard ROCKWOOL stone wool and the lowest lambda stone wool insulation currently available in the UK & Ireland.1
Thermal Insulation Cavity Slab is supplied 455mm wide to fit standard vertical wall tie spacings and is available in 100mm and 150mm thicknesses.
¹ correct at time of publishing based on publicly available information
- Euroclass A1 in accordance with BS EN 13501-1: 2018 Reaction to Fire rating
- Thermal conductivity 0.032 W/mK
- BBA approved (Certificate No. 22/6335)
Areas of application
Thermal Insulation Cavity Slab 32 is suitable for use on the following construction types:
- Masonry cavity walls
- Separating walls
Documentation
If you require any certification that is not listed here, please contact us via ukdocumentation@rockwool.com

Thermal Insulation Cavity Slab 32 Datasheet
ROCKWOOL® Thermal Insulation Cavity Slab 32 is a full and partial fill stone wool insulation solution for use in external and party masonry cavity walls, and is suitable for use in new builds, renovations, or extensions.

Thermal Insulation Cavity Slab 032 BBA Certificate
Certificate No. BBA-22-6335-Cavity Wall Insulation Partial Fill Application

Thermal Insulation Cavity Slab 032 BBA Certificate
Certificate No. BBA-22-6335-Cavity Wall Insulation Full Fill Application

ROCKWOOL Stone Wool BSI Kitemark Certificate
Certificate No. km06661-bs-en-13162-2012-a1-2015

Thermal Insulation Cavity Slab 32 Installation Guide
Installation guidelines for ROCKWOOL Thermal Insulation Cavity Slab 32
Product properties
| Name | Value | Unit |
|---|---|---|
| Declared thermal conductivity | 0.032 | W/mK |
| Reaction to Fire | A1 | Euroclass |
| Long term water absorption | WL(P) | kg/m² |
| Short term water absorption | WS | kg/m² |
| Product standard | EN 13162:2012+A1:2015 | |
| CE certificate number | 0751-CPR-393.0-01 | |
| Declaration of Performance (DoP) number | RWUK-CE-0256-01 | |
| BBA certificate number | 22/6335 |
Product variants


Hands-on fire-stopping training
ROCKWOOL’s specially created expert led one-day course in fire stopping theory and practical installation practice for industry professionals.
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