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MOY Lexshield AVB - Self-adhered HDPE Air and Vapour Barrier

Verified by manufacturer 1 month ago

MOY

Self-adhered HDPE air and vapour barrier membrane for use in roofs.

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Application

Compatible with most fluid applied air barriers and insulation adhesives.


Air barrier uses:

  • Cavity walls.
  • As a transition membrane for flashing window and door openings.


Air and vapour control layer (AVCL) use:

  • Flat roofs.

Description

Self-adhered air and vapour barrier membrane for use in roofs. Cross-laminated, high density polyethylene film-backed with a proprietary high tack adhesive.


Features and benefits:

  • Excellent air and vapour barrier properties - Surpasses the industry's most rigourous air and vapour resistance tests.
  • Flexible - Remains leak-free, even when subjected to differential expansion and contraction forces or minor cracking in the underlying substrate.
  • Tear and puncture resistant - high density film used provides excellent resistance to accidental cuts and tears during installation.
  • No primer required - Super tacky adhesive formulation sticks well to virtually any surface; mechanical fastening is not required at plane or direction changes.
  • Apply in cold temperatures - Can be applied in temperatures as low as -20°C.
  • Seals around fasteners - Lexshield™ self-seals around screw and nail penetrations.
  • Offers improved benefits over traditional air and vapour barrier systems at a lower installed cost.
  • CE marked and ETA certified.

General information

Color

White

Material

High density polyethylene (HDPE)

Shape

Other

Length

68580 mm

Width

1372 mm

Height

0.26 mm

Warranty description

-

Manufacturer guidance

For the duration of the MOY Warranty.

Uniclass

Pr_25_57_65_60 Plastics sheetsPrimary

CAWS

H31/45 Air and vapour control membrane

H31/261 Air and vapour control membrane

P10/310 Air and vapour control layer

J31/330 Air and vapour control layer

J41/395 Air and vapour control layer

Specification data - Plastics sheets

Material

High-density polyethylene (PE-HD).

Purpose

Air and vapour barrier.

Performance characteristics

-

Tensile strength (minimum)

To ASTM D-882, 49 kPa (7100 psi).

Manufacturer guidance

Tensile strength at break.

Tear resistance

To ASTM D-1938, 2.5 kg (tongue); to ASTM D-1004, 3.1 kg (graves).

Elongation to break

To ASTM D-882, 100%.

Water vapour resistance (minimum)

To EN 1931, 425 MN.s/g.

Fire performance

Flame Spread Index to ASTM E84, 5; Smoke Development Index to ASTM E84, 5.

Third-party certification

European Technical Assessment (ETA) certification.

Form

Cross-laminated.

Physical properties

-

Colour

White.

Weight (minimum)

18 kg/roll.

Dimensions

-

Thickness (minimum)

0.26 mm.

Width (minimum)

1372 mm.

Roll length (minimum)

68 580 mm.

Air permeability

To ASTM E2178-03, 0.0023 L/s/m² (at 75 PA P.D.); 0.0074 L/s/m² (at 300 PA P.D.).

Moisture resistance

To EN 1931, 500,700 μ.

Water vapour diffusion resistance

To EN 1931, 85 m.

Manufacturer guidance

Equivalent air layer thickness Sd.

Performance characteristics

Type I vapour retarder in accordance with CAN/CGSB-51.22-M89.

Application temperature

-20°C (minimum).

Service temperature range

-40° to 93°C.

Sustainability data

Contains Red List materials

No

Country of material origin

Canada

Country of product manufacture

Canada

Literature

MOY Lexshield AVB

MOY Lexshield AVB

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