RIW Gas Seal HC

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.