Perm-A-Barrier® VC20
Description

Self-adhesive, vapour-impermeable, air barrier membrane which can provide a complete barrier to both air leakage and vapour diffusion through the structure.

Can be used in conjunction with Bituthene Liquid Membrane, Perm-A-Barrier Aluminium Flashing, Perm-A-Barrier Detail Membrane and Preprufe SC1 Primer.

General information

Size

[Size, Width: 1.2 m; Thickness 0.4 mm]

Width: 1.2 m

Thickness 0.4 mm

Uniclass 2015

Pr_25_57_65_60 Plastics sheetsPrimary

CAWS

H30/261 Air and vapour control membrane

H30/30 Air and vapour control membrane

H31/261 Air and vapour control membrane

H31/45 Air and vapour control membrane

H92/780 Air and vapour control layer

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Specification data - Plastics sheets

Product Reference

Perm-A-Barrier® VC20

Standard product features

Composition:

Reinforced, cross-laminated, HDPE film with a synthetic, non-bituminous adhesive.

Size:

  • Width: 1.2 m.
  • Thickness 0.4 mm.

Weight:

488 gm².

Performance:

  • Water vapour transmission (to ASTM E-96): 0.019.
  • Vapour resistance: 900 MNs/g (±30%).
  • Vapour Resistivity: 2.25 MNs/gm (±30%).
  • μ value: 450 000 (±30%).
  • SD value (m): 185 (±30%).

Product Options

Composition:

Reinforced, cross-laminated, HDPE film with a synthetic, non-bituminous adhesive.

Size:

  • Width: 1.2 m.
  • Thickness 0.4 mm.

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