Gas Membrane Lap Tape
Application

Typically used for the jointing of construction membranes including damp proof, radon and gas resistant sheet membranes for combined ground gas and damp proofing applications.

Description

Lap tape which is manufactured using an aluminium/ polythene laminate coated on one surface with an additional layer of self-adhesive polymer modified bitumen.

Features and benefits:

  • Incorporates an aluminium foil core to provide resistance to the passage of methane, carbon dioxide and radon gases.
  • Adhesion properties to most membrane types and building materials.
  • Easy to install, providing a robust method of membrane jointing.

Application:

Typically used for the jointing of construction membranes including damp proof, radon and gas resistant sheet membranes for combined ground gas and damp proofing applications.

General information

Features

Incorporates an aluminium foil core to provide resistance to the passage of methane, carbon dioxide and radon gases. Has adhesion properties to most membrane types and building materials and is easy to install, providing a robust method of membrane jointing

Material

Bitumen modified aluminium/ polythene laminate

Shape

Supplied in roll form

Size

1.15 mm thick x 150 mm wide x 10 m long

Uniclass 2015

Pr_35_90_87_77 Self-adhesive bitumen tapesPrimary

CAWS

D21/350 Gas-retardant membrane

D21/38 Gas-retardant membrane

F30/360 Gas resistant damp proof courses/ cavity trays

F30/54 Gas resistant dpcs/ cavity trays

J40/140 Loose laid plastics or rubber sheet gas retardant damp proofing

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Specification data - Self-adhesive bitumen tapes

Product Reference

Gas Membrane Lap Tape

Thickness

1.15 mm

Width

150 mm

Strength

3 N/mm to ASTM D1000

Elongation

40% to ASTM D1000

Puncture resistance

250 N to ASTM E154

Adhesion (180° peel)

2 N/mm to ASTM D1000

Water vapour transmission

<0.1 g/m²/day to ASTM E96

Methane gas permeability

<0.03 ml/m²/day

Radon diffusion

5.0 x 10^-14 m²/s

Standard product features

Colour:

White/black.

Features:

Incorporates an aluminium foil core to provide resistance to the passage of methane, carbon dioxide and radon gases. Has adhesion properties to most membrane types and building materials and is easy to install, providing a robust method of membrane jointing.

Material:

Bitumen modified aluminium/ polythene laminate.

Shape:

Supplied in roll form.

Size:

1.15 mm thick x 150 mm wide x 10 m long.

Country of origin:

United Kingdom.

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