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AIRSTOP SD18 Vapour Retarder

Transparent, extremely tear-resistant vapour retarder and airtight layer for wall, roof and ceiling constructions.

extreme robust
transparent

Product data sheet

Available dimensions
Product data
Processing guideline
Downloads

AIRSTOP SD18 Vapour Retarder

Available dimensions
Product data
Processing guideline
Downloads

Available dimensions

Article number	Roll width	Roll length	Rolls / Pallet	Total area		Inquiry List
2AIRDB	1.5 m	50 m	45 rolls	3375 m²
2AIRDB3	3 m	50 m	40 rolls	6000 m²

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Product data

Advantages

transparent
tear-resistant
easy to install
for floor, wall and ceiling

A transparent, extremely tear-resistant vapour retarder and airtight layer for wall, roof and ceiling constructions.

Material composition

PP fleece with PP covering

Thickness

0.2 mm

Thickness

EN 1849-2

Colour

Transparent grey with green imprint

Weight

90 g/m²

Weight per unit area

(± 10)

Weight per unit area

EN 1849-2

sd-value

18 m

sd-value - Standard

EN 1931

Temperature resistance

-40 °C

Temperature resistance

80 °C

Elongation - lengthwise

30 %

Elongation - crosswise

30 %

Elongation

EN 12311-2

Tensile strength - lengthwise

200 N/50 mm

Tensile strength - crosswise

160 N/50 mm

Tensile strength

EN 12311-2

Tear propagation resistance - lengthwise

250 (-50) N

Tear propagation resistance - crosswise

240 (-40) N

Tear propagation resistance

EN 12310-1

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.