External Wall DD Slab
External Wall DD Slab is an insulation product compatible with a wide range of third-party accredited external wall insulation systems.
Manufactured using Dual Density technology, the outer surface of each slab features a distinctly higher density than the underside. This provides a firm and robust surface for the application of fixings and render, while the resilient underside can accommodate unevenness in the substrate.
Once installed, adjacent tightly-butted slabs will effectively 'knit' together to provide a continuous insulating layer, eliminating heat losses that would otherwise be caused by gaps.
Specifying ROCKWOOL insulation within an EWI system gives peace of mind to building owners and tenants alike, safe in the knowledge that stone wool insulation will work as effectively as the day it was installed - even after 65 years of use.*
Specification
| NBS Clause | Length (mm) | Width (mm) | *Approved thickness range (mm) |
| M21/20, M21/210 | 1200 | 600 | 50-250 |
*Thickness options may be subject to a minimum production volume. Speak to the specification team for guidance.
Standards and Certification
| Product standards | EN 13162 |
| CE Marking | CE Marked |
Technical Properties
| Reaction to fire (Euroclass) | Euroclass A1 |
| Thermal conductivity | 0.036 W/mK |
| Compressive strength | ≥ 10 kPa |
| Tensile strength | ≥ 10 kPa |
| Durability | DS(70,90) |
| GWP | Zero GWP |
| ODP | Zero ODP |
CAD Drawings
Download CAD Drawings here
*References
- Testing done at Danish Technical Institute (DTI) in 2023, “Testing ROCKWOOL insulation from CPH airport hangar 4” Source link; Rockwool - Report Sampling of insulation at CPH airport hangar 4.pdf (swedisol.se)
- FIW Munchen, Durability Project Mineral Wool, Source link Press Release (eurima.org)
