Durox Supabloc 4
Durox Supabloc 4 is mainly used for cavity separating walls between homes that conform to Approved Document E or Robust Detail E-WM-6. It can also be used for the inner and outer leaves of external cavity walls. Plus, Supabloc 4 can now be used below ground for cavity or internal walls in sulfate conditions not exceeding DS-3. To aid identification, Durox Supabloc 4 is colour coded brown on one end of the block.
Technical properties
- Manufactured to BS EN 771-4
- Average compressive strength: 4.2N/mm²
- Dry density: 630kg/m³
- Thermal conductivity: 0.16W/mK
- Reaction to fire: Class A1
- Typical airtightness: 0.12m³/(h.m²) at 50 PA
- Block size: 620mm long x 100-215 mm (various widths) x 215m high
Sizes & weights for Supabloc 4 (4.2N/mm²)
| Block width (mm) | 100 | 115 | 140 | 150 | 200 | 215 |
| Unit weights (kg) | 8.7 | 10.0 | 12.1 | 13.0 | 17.3 | 18.6 |
Unit weights are approximate and based on 3% moisture content
Other sizes are available subject to mnimum order quantities
Find out more
Download the Topblock Durox Aircrete Blocks Brochure (pdf, 1029kb)
See all Durox applications
