Verified by manufacturer 1 day ago
200 Premium Inverted Roof
KIWA BDA
Certificate type
Expanded polystyrene (EPS) insulation for inverted roofs.
BEWI Inverted Roof Insulation is a closed-cell expanded polystyrene (EPS) with low water absorption properties.
The insulation boards are loose-laid over the weatherproofing, there is no requirement to adhere or mechanically fix the boards. BEWI Filter Membrane is laid over the insulation. Lastly, gravel ballast and/ or paving slabs are used to secure the insulation to the deck. EPS is compatible with and can be laid directly onto hot melt and bitumen-based weatherproof membranes. See installation details for advice on other membrane types.
The system is a lightweight and easy to install solution. There are no requirements for special PPE when installing or cutting the insulation panels.
Features and benefits:
Material | Expanded polystyrene (EPS) |
Shape | Rectangle |
Length | 1200 mm |
Width | 1200 mm |
Height | 50 mm 55 mm 60 mm 65 mm 70 mm |
Uniclass | |
CAWS | J41/410 Expanded polystyrene (EPS) insulation J41/26 Thermal insulation |
Classification data | |
Standard | To BS EN 13163. |
Third-party certification | KIWA certified. Guidance for specification option: BAR-19-098-S-A-UK. |
Fire performance | To BS EN 13501-1, Euroclass E. |
Compressive strength (minimum) at 10% compression | 200 kPa. |
Thermal conductivity (maximum) | 0.033 W/m·K. |
Water permeability | ≤ 1%. |
Thickness | 50 mm. 55 mm. 60 mm. 65 mm. 70 mm. 75 mm. 80 mm. 85 mm. 90 mm. 95 mm. 100 mm. 105 mm. 110 mm. 115 mm. 120 mm. 125 mm. 130 mm. 135 mm. 140 mm. 145 mm. 150 mm. 155 mm. 160 mm. 165 mm. 170 mm. 175 mm. 180 mm. 185 mm. 190 mm. 195 mm. 200 mm. 205 mm. 210 mm. 215 mm. 220 mm. 225 mm. 230 mm. 235 mm. 240 mm. |
Face size (nominal length x width) | 1200 x 1200 mm. |
Compressive creep (design load) maximum 2% deflection after 50 years | 60 kN/m². |
Bending strength | 250 kN/m². |
Material | Expanded polystyrene (EPS) |
Recyclability | 100% recyclable. |