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AIRSTOP VAP Vapour Retarder

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

Available dimensions

Article number Roll width Roll length folded to Rolls / Pallet Total area Inquiry List
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

Advantages

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

Product data

Quality vapour retarder sheeting and airtight layer of flame-retardant polyethylene for non-vapour retardant roof, wall and ceiling constructions.
Material composition
LDPE
Thickness
0.2 mm
Thickness
EN 1849-2
Colour
Green transparent
Weight
180 g/m²
Weight per unit area
EN 1849-2
sd-value
100 m
sd-value
>
sd-value - Standard
EN 1931
Temperature resistance
-20 °C
Temperature resistance
60 °C
Working temperature
5 °C
Working temperature
40 °C
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
Storage
Cool and dry
Fire performance
E
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.
INFO

(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.
(1) MECHANICAL ATTACHMENT OF THE VAPOUR BARRIER

(2) AIRTIGHT ADHESION

Airtight adhesion of the joints, connections and penetration points must be carried out using the AIRSTOP Adhesion system.
(2) AIRTIGHT ADHESION

(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.
(3) TRANSVERSE LATHING / MOUNTED AT INTERVALS

(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.
(4) LONGITUDINAL LATHING