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Majvest® Airtight & Breathable Membrane for Walls (W1) - Breather membrane

Verified by manufacturer 1 month ago

Majvest® 200

SIGA Cover AG Variant:

Diffusion-open, windproof and rainproof façade membranes.

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Application

Suitable for permanent protection of the external wall structure and maintaining the functionality of the thermal insulation.

Description

Diffusion-open, windproof and rainproof façade membranes.


The range comprises:

  • Majvest® 200: Multi-layer, diffusion-open façade membrane, proof against driving rain, for use behind sealed façade cladding.
  • Majvest® 500 SA airtight and self-adhesive.
  • Majvest® 700 SOB: (B-s1,d0) UV resistant. Black, diffusion-open and driving rain-proof sheet perfectly suited for the protection of building envelopes with permanently open facades.

General information

Color

Blue

Black

Finish

Matt

Material

Polypropylene

Length

50000 mm

33300 mm

30480 mm

Width

1500 mm

3000 mm

457.2 mm

1524 mm

Height

0.5 mm

Warranty description

Ten year

Uniclass

Pr_25_57_10_94 Vapour-permeable sheetsPrimary

CAWS

H92/785 Breather membrane

H20/10 Sheet cladding

P10/65 Breather membrane

H30/10 Fibre cement

H21/20 Breather membrane

H21/15 Horizontal timber weatherboarding

H21/10 Vertical timber weatherboarding

P10/320 Breather membrane

H92/120 Rainscreen cladding

M30/265 Building paper

H30/110 Fibre cement

H21/130 Breather membrane

H21/116 Horizontal timber weatherboarding

H21/115 Vertical timber weatherboarding

H21/111 Horizontal timber weatherboarding

H21/110 Vertical timber weatherboarding

H20/155 Sheet cladding (attached to timber battens)

H20/150 Sheet cladding (attached to metal support systems)

Specification data - Vapour-permeable sheets

Standard

To BS EN 13859-1, BS EN 13859-2.

Performance criteria

-

Water vapour properties

To EN 1931/ ISO 12572, 0.05 m, 380 g/(m²*d).

Fire performance

To BS EN 13501-1, Class E.

Tensile properties

To EN 12311-2: lengthwise: 270 N/50 mm; crosswise: 225 N/50 mm.

Manufacturer guidance

Maximum.

Class (minimum)

W1 (to EN 1928).

Material

Three layered; microporous functional layer, reinforced on both sides with polypropylene (PP).

Form

Non-woven.

Weight (minimum)

136 g/m².

Thickness (minimum)

0.5 mm.

Temperature resistance

-40 to +80°C.

Elongation

To EN 12311-2: Lengthwise: 60%; crosswise: 80%.

Manufacturer guidance

At maximum tensile strength:

Tear resistance

To EN 12310-1: lengthwise: 180 N; crosswise: 200 N.

Manufacturer guidance

Nail shank:

Resistance to air penetration

0.01 m³/m²h50Pa (to EN 12114).

Colour

Blue.

Dimensions

1.5 x 50 m.

3 x 50 m.

Manufacturer guidance

Roll width x length.

Sustainability data

Contains Red List materials

No

Country of material origin

Switzerland

Country of product manufacture

Switzerland

Material

Polypropylene

Recycled content

As defined in clause 7.8 of BS EN ISO 14021

0 %

Expected Life

Lifetime

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