This site uses cookies to store information on your computer. Learn more about these cookies, and how to opt out of them. Find out more

NBS Source

Application

  • Sites with medium to high level gas concentrations.
  • Sites with low to medium level hydrocarbon vapour contamination.
  • Ground bearing concrete slabs.
  • Suspended concrete slabs.

Description

Loose laid sheet membrane system designed to protect buildings against the ingress of methane, radon, carbon dioxide, hydrocarbon vapours and water vapour. The multi-layered laminate structure gives good strength, flexibility and installation properties. The upper surface of the membrane is coloured green.


Features and benefits:

  • Fully compatible with Preprufe and Bituthene membrane systems to form an integrated waterproof and gas resistant protection system.
  • Prevents the transmission of methane, radon and carbon dioxide gases.
  • Resistant to hydrocarbon vapours.
  • Fully bonded lap system.
  • Robust – resistant to on-site damage.
  • Good puncture resistance.
  • High tear and tensile strength.
  • Flexible – can accommodate normal building movements.
  • Weldable.

General information

Shape

Circular

Roll

Material

High performance, reinforced polyethylene membrane incorporating a gas resistant aluminium foil.

Polyethylene

Aluminium

Size

2 x 50 m

Uniclass

Pr_25_57_65_60 Plastics sheetsPrimary

CAWS

J40/140 Loose-laid plastics or rubber sheet gas-retardant membranes

J40/145 Loose-laid weldable polyethylene gas-retardant membranes

Specification data - Plastics sheets

Material

High-density polyethylene (PE-HD).

Purpose

Gas retardance and water resistance.

Performance characteristics

-

Tensile strength (minimum)

>9 kN/m.

Tear resistance

>350 N.

Resistant to underground gases

Carbon dioxide / Methane / Radon.

Root inhibitor

Aluminium foil.

Physical properties

-

Weight (minimum)

360 g/m².

Dimensions

-

Thickness (minimum)

0.4 mm.

Width (minimum)

2 m.

Roll length (minimum)

50 m.

Product Reference

GGM 400 Gas Membrane

Moisture vapour transmission rate

<0.03 g/m²/day.

Radon transmittance

<1x10-9 m/s.

Methane transmission rate

<0.005 ml/m²/h/atm.

Digital objects

Platform Compatible Version Certified to
Revit
-

1

2.1
IFC
-

1

2.1
Download now from NBS National BIM Library

Similar products from GCP Applied Technologies

HYDRODUCT® 401/ 501

HYDRODUCT® 401/ 501

Hydroduct® CF20

Hydroduct® CF20

HYDRODUCT® Root Barrier

HYDRODUCT® Root Barrier