High Performance Partial Fill Cavity Slab
The ROCKWOOL High Performance Partial Fill Cavity Slab is a semi-rigid insulation solution designed for masonry cavity wall construction.
It is non-combustible - Euroclass A1 classification as defined in EN 13501-1 and has been designed to provide thermal performance and ease of installation, with the dual density absorbing irregularities on the inner leaf and provide a robust outer surface to fix retaining clips onto. These features in turn support the longevity of the external wall construction by delivering long-term energy efficiency and minimising heat loss through gaps in the insulation layer.
Specification
| NBS Clause | Length (mm) | Width (mm) | *Approved thickness range (mm) |
| F30-155 | 1200 | 455 | 50 - 230 |
*Thickness options may be subject to a minimum production volume. Speak to the specification team for guidance.
Standards and Certification
| Product standards | BS EN 13162 |
| CE Marking | CE Marked |
| BBA Approved | Certificate 93/2884 |
Technical Properties
| Reaction to fire (Euroclass) | Euroclass A1 |
| Thermal conductivity | <90 mm thick: 0.034 W/mK ≥90 mm thick: 0.035 W/mK |
| Water repellent | Yes |
| Water vapour resistance | Negligible |
Thermal Performance
| Inner block | Medium Dense (0.470 W/mK) | Aircrete Hi Strength (0.190 W/mK) | Aircrete standard (0.15 W/mK) |
| High Performance Partial Fill (mm) | U-value (W/m2K) | U-value (W/m2K) | U-value (W/m2K) |
| 80 | 0.31 | 0.29 | 0.28 |
| 100 | 0.27 | 0.25 | 0.24 |
| 120 | 0.23 | 0.22 | 0.21 |
| 150 | 0.19 | 0.18 | 0.18 |
CAD Drawings
Download CAD Drawings here
102mm Facing brick outer skin, ROCKWOOL High Performance Partial Fill, 100mm internal concrete block (various densities) Internal finishes: plasterboard on dab