RIW Gas Seal HC
Verified by manufacturer 1 year ago
Multi-layered, blended polyethylene membrane for protection against ground gas and hydrocarbons.
Application
Suitable for use as a combined ground floor damp proof membrane and hydrocarbon/ gas barrier.
Description
A 0.5 mm-thick, multi-layered, blended polyethylene smooth sheet, typically used as a gas barrier and damp proof membrane in concrete floors below the slab or where additional protection from hydrocarbons and VOCs are required.
Features and benefits:
- Hydrocarbon, methane, carbon dioxide, radon and VOC barrier.
- Manufactured from virgin material, not recycled waste.
- Separate damp proof membrane not required.
- Robust jointing and sealing system.
- High puncture resistance.
- Welded joints possible.
- Complies with latest code of practice as published by CIRIA and BRE.
- Compliant with BS 8485:2015.
Accessories:
A range of accessories are available (specified separately):
- RIW Gas Seal GR DPC: Gas resistant damp proof course/ cavity tray, 450, 600 or 900 mm wide.
- RIW Gas Seal Pipe Collar: Pre-fabricated ‘top-hats' for sealing around pipe penetrations. Available in 100, 130 and 160 mm diameters.
- RIW Gas Seal Tape HC: Double-sided self-adhesive butyl tape, 100 mm wide, for sealing between overlaps in the membrane.
- RIW Lap Tape RB: Self-adhesive polymer/ bitumen compound with polypropylene woven mesh, 75 mm wide, for sealing edges of lapped product.
- RIW Pre-Formed Gas Cloaks: Pre-fabricated units for internal/ external corners and door reveals.
General information
Color | Silver |
Material | Polyethylene |
Length | 50000 mm |
Width | 2000 mm |
Uniclass | |
CAWS | J40/35 Loose-laid plastics or rubber gas-retardant membranes J40/140 Loose-laid plastics or rubber sheet gas-retardant membranes |
Specification data - Plastics sheets
Material | Multi-layered, blended polyethylene. |
Purpose | Gas retardance, damp-proof membrane. |
Standard | To BS 8485. |
Performance characteristics | |
Tensile strength (minimum) | To BS EN 12311-1, >550 N/50mm². |
Tear resistance | Tear resistance (to EN 12310-1): >300 N. |
Resistant to underground gases | Methane.Guidance for specification option: Methane permeability (to BS ISO 15105-1): 0.13 ml/m²/day/atmosphere. |
Physical properties | |
Colour | Black and grey. |
Dimensions | |
Thickness (minimum) | 0.5 mm. |
Width (minimum) | 2.0 m. |
Roll length (minimum) | 50 m. |
Recycled content | None – virgin material. |
Product Reference | RIW Gas Seal HC |
Sealed Laps | 150 mm. |
Tensile elongation property | To EN 12311-1, 400%. |
Water vapour transmission | To BS EN 1931, 0.14 g/m²/day. |
Sustainability data
Recycled contentAs defined in clause 7.8 of BS EN ISO 14021 | 0 % |
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