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Gas Membrane Lap Tape

Verified by manufacturer 3 months ago

Cordek Ltd

A tape suitable for sealing the laps within membrane installations.

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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 and 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.

General information

Color

Black

White

Material

Aluminium

Bitumen

Polythene

Manufacturer guidance

Bitumen modified aluminium/ polythene laminate.

Length

10000 mm

Width

150 mm

Height

1.15 mm

Uniclass

Pr_35_90_87_77 Self-adhesive bitumen tapesPrimary

CAWS

D21/350 Gas-retardant membrane

D21/38 Gas-retardant membranes

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 membranes

J40/35 Loose-laid plastics or rubber gas-retardant membranes

Specification data - Self-adhesive bitumen tapes

Core

Aluminium foil.

Size

1.15 x 150 x 10,000 mm.

Guidance for specification option:

Thickness x width x roll length.

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.

Material:

Bitumen modified aluminium and polythene laminate.

Sustainability data

Country of product manufacture

United Kingdom

Literature

Cordek VOC & Ground Gas Brochure

Cordek VOC & Ground Gas Brochure