Premcrete Combi-seal
Verified by manufacturer 22 hours ago
Gas resistant waterproof membrane
Application
Vertical application: The sheets should be installed with the white active fleece in contact with the freshly placed concrete and aligned vertically ensuring that all lap joints face down away from the concrete pour. Horizontal appliction: COMBI-SEAL should be laid with the white fleece facing the installer and in direct contact with the concrete. Adjoining lapse should be a minimum of 150mm and tapped using COMBI-SEAL TAPE or by making use of the selvedge (refer to above methodology) it is recommended to stager the lap joints by 300mm to avoid 4 sheets lapping at one location.
Description
COMBI-SEAL is a cross-laminated, lightweight, pre-applied membrane which will resist ground gases and water. The membrane utilises PREMCRETE APAN™ technology to produce a membrane which will effectively resist water pressure and gases from within the ground.
General information
Color | Black |
Finish | Matt |
Material | Polyethylene |
Shape | Rectangle |
Length | Bespoke |
Width | Bespoke |
Height | Bespoke |
Warranty description | 25 year |
Uniclass | |
CAWS | D21/350 Gas-retardant membrane D21/38 Gas-retardant membranes J40/120 Loose-laid plastics or rubber sheet damp-proofing J40/130 Loose-laid plastics or rubber sheet oversite damp-proofing J40/140 Loose-laid plastics or rubber sheet gas-retardant membranes J40/20 Loose-laid plastics or rubber sheet damp-proofing J40/30 Loose-laid plastics or rubber sheet oversite damp-proofing J40/35 Loose-laid plastics or rubber gas-retardant membranes |
Product range |
Specification data - Plastics sheets
Material | Polyethylene. |
Purpose | Gas-resistant waterproof membrane. |
Standard | BS 8485:2015, BS 8102:2009. |
Third-party certification | KIWA BDA Certificate BABKIWA; BDA Certificate: BAB-20-143-P-UK-20-144-P-UK. |
Performance characteristics | |
Tensile strength (minimum) | To DIN EN ISO 12311-2: Machine direction (MD): 600 N/5 cm; Cross direction (CD): 1100 N/5 cm. |
Tear resistance | To DIN EN ISO 12310-1: Machine direction (MD): 500 N; Cross direction (CD): 454 N. |
Elongation to break | To DIN EN ISO 12311-2: Machine direction (MD): 90%; Cross direction (CD): 80%. |
Resistant to underground gases | Methane, carbon dioxide and radon. |
Form | Reinforced with a 12 micron aluminium foil core. |
Root inhibitor | Aluminium foil core. |
Physical properties | |
Colour | Black. |
Weight (minimum) | 780 g/m². |
Dimensions | |
Thickness (minimum) | 3 mm. |
Width (minimum) | 2 m. |
Roll length (minimum) | 25 m. |
Moisture vapour transmission rate | 0.003 g/m²/day (to ISO 15106). |
Methane permeability | 14 ml/m²/day (to ISO 15105-1). |
Carbon dioxide permeability | 18 ml/m²/day (to ISO 15105-1). |
Static load resistance | 20 kg. |
Watertightness | Pass (to DIN EN 1928 B). |
Impact resistance | To DIN EN 12691: Pass. |
Literature
Combi-Seal TDS
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