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AIRSTOP VAP Vapour Retarder

AIRSTOP VAP Vapour Retarder is a high quality polyethylene foil barrier for achieving vapour tight/block layers in wall and roof constructions.

optimized folding

Product data sheet

Available dimensions
Product data
Processing guideline
Downloads

AIRSTOP VAP Vapour Retarder

Available dimensions
Product data
Processing guideline
Downloads

Available dimensions

Article number	Roll width	Roll length	folded to	Rolls / Pallet	Total area
2VAP3	3 m	50 m	1.5 m	35 rolls	5250 m²
2VAP4	4 m	25 m	1 m	54 rolls	5400 m²
2VAP5	5 m	25 m	1.3 m	45 rolls	5625 m²

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Product data

Advantages

tear-resistant
easy to install
hard-wearing
flame-retardant

Quality vapour retarder sheeting and airtight layer of flame-retardant polyethylene for non-vapour retardant roof, wall and ceiling constructions.

Material composition

LDPE

sd-value

100 > m

Thickness

0.2 mm

Temperature resistance

-20–60 °C

Working temperature

5–40 °C

Weight

180 g/m²

Thickness

EN 1849-2

Colour

Green transparent

Weight per unit area

EN 1849-2

sd-value - Standard

EN 1931

Elongation - lengthwise

> 500 %

Elongation - crosswise

> 570 %

Elongation

EN 12311-2

Tensile strength - lengthwise

> 175 N/50 mm

Tensile strength - crosswise

> 160 N/50 mm

Tensile strength

EN 12311-2

Tear propagation resistance - lengthwise

> 130 N

Tear propagation resistance - crosswise

> 135 N

Tear propagation resistance

EN 12310-1

Shearing resistance of the connection joints

NDP

Storage

Cool and dry

Fire performance

EN 13501_1

Processing guideline

INFO

Vapour barriers can used with wall, roof and ceiling construction elements as an airtight layer and as a vapour retarding layer.

(1) MECHANICAL ATTACHMENT OF THE VAPOUR BARRIER

The vapour barrier is usually attached transverse to the position of the rafters, joists or beams with the smooth and/or printed side facing the installer. The lengths are fixed mechanically to the construction’s wood with approx. 10cm overlap using tacking staples. For metal C-studs a temporary attachment using double-sided adhesive tape or even a spray-on contact adhesive is a possibility.

(2) AIRTIGHT ADHESION

Airtight adhesion of the joints, connections and penetration points must be carried out using the AIRSTOP Adhesion system.

(3) TRANSVERSE LATHING / MOUNTED AT INTERVALS

The laths underneath the vapour barrier have to be mounted before the cellulose is blown in. The centre distance shall be less than ≤30 cm. The joints of the vapour barrier also have to be covered by an additional lath. Glued connections and joints that were under tension have to be mechanically secured. The membrane has to be applied without tension.

(4) LONGITUDINAL LATHING

When no transverse lathing is used, e.g. if formwork is installed on longitudinal lathing, the vapour barrier must be placed parallel to the rafters or to the construction. The joints must lie on the wood of the construction and be stapled overlapping and sealed using AIRSTOP adhesive tape. Before the insulation is blown in the longitudinal lathing must be mounted to provide mechanical relief of the joints.