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RIW Sheetseal GR - Gas Retardant Membrane

Verified by manufacturer 16 days ago

RIW

Sheetseal GR is a cold applied self-adhesive gas and waterproof membrane, with a high density polyethylene film bonded to aluminium foil and coated with a bitumen/rubber self adhesive layer.

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Application

  • Where protection against ground gas is required
  • Basement tanking (internal and external).
  • Retaining walls.
  • Ground floor DPM.

Description

A cold applied, high density polyethylene film bonded to aluminium foil and coated with a bitumen and rubber self-adhesive layer with a removable reinforced silicone release paper. The product is typically used to reduce the passage of methane and carbon dioxide gasses on contaminated sites. The membrane must always be covered.


Sheetseal GR protects the structure against methane, carbon dioxide and radon from the ground. In addition, Sheetseal GR provides a water and water vapour barrier. When designing a Type A (barrier) protection (as classified in BS 8102:2022), the product applied correctly is capable of providing the levels of protection required for grades 1a, 1b 2 & 3 basements.


Features and benefits:

  • Methane and carbon dioxide barrier.
  • Water and water vapour barrier.
  • Factory controlled thickness.
  • Elastic and flexible.
  • Damage easily repaired.
  • No drying time.
  • Selvedge strip to improve lap sealing.


Joint laps:

Side and end laps minimum 150 mm are recommended.

General information

Color

White

Finish

Smooth

Other

Material

Bitumen

Shape

Rectangle

Length

19050 mm

Width

1050 mm

Height

1.3 mm

Warranty description

Ten year

Manufacturer guidance

RIW Limited’s waterproofing products will, subject to normal service conditions, provide an effective barrier to the transmission of liquid water and water vapour for the life of the building in which they are incorporated. The products must be installed in accordance with RIW written instructions, and following installation must not be subjected to any damage or long-term UV exposure.

Uniclass

Pr_25_57_08_08 Bitumen sheetsPrimary

CAWS

J40/180 Self-adhesive bitumen membranes

J40/45 Self-adhesive bitumen gas retardant damp proofing/ tanking

Specification data - Bitumen sheets

Form

Gas-resistant, damp-proof membrane.

Material

-

Carrier material

Polyethylene (PE).

Gas inhibitor

Aluminium foil.

Thickness (minimum)

1.5 mm.

Product Reference

RIW Sheetseal GR

Primer

Not required.

RIW Sheetseal Primer.

Guidance for specification option:

Used on all vertical or inclined substrates. RIW Sheetseal primer is a bitumen solution.

Water vapour transmission

< 0.1 g/m²/24hr.

Methane gas permeability

< 0.3 ml/m²/24hr.

BIM objects

BOS

NBS BIM Object Standard

This BIM object has been authored to meet the requirements of the NBS BIM Object Standard.

Find out more about the NBS BIM Object Standard.

Platform Compatible Version
Revit

Revit 2016

2

IFC

IFC2X3

1

Literature

RIW Sheetseal GR

RIW Sheetseal GR

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