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ÖKO NATUR Vapour Retarder fabric-reinforced

Used as a vapour retarder and airtight layer on wall and roof constructions. High tear resistance due to its integrated fabric mesh reinforcement.

ECOLOGICAL
VERY ROBUST
PAPER VAPOUR BARRIER

Product data sheet

Available dimensions
Product data
Processing guideline
Downloads

ÖKO NATUR Vapour Retarder fabric-reinforced

Available dimensions
Product data
Processing guideline
Downloads

Available dimensions

Article number	Roll width	Roll length	Rolls / Pallet	Total area		Inquiry List
2ISONDBFV1	1 m	50 m	48 rolls	2400 m²
2ISONDBFV	1.5 m	50 m	30 rolls	2250 m²

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Product data

Advantages

regulates moisture
for blow-in work behind paper
tear-resistant
healthy living environment
for floor, wall and ceiling

A fabric-reinforced paper vapour retarder and air-seal layer for roof, wall and ceiling constructions for all non-vapour retardant installations. Water vapour can diffuse through the thermal insulation in controlled amounts. Fabric reinforcement guarantees high tear-resistance.

Material composition

Two layers of kraft paper with tear-resistant fabric between

Thickness

0.25 mm

Thickness

EN 1849-2

Colour

Brown / white, with green imprint

Weight

175 g/m²

Weight per unit area

EN 1849-2

sd-value

6.45 m

sd-value - Standard

EN 1931

Temperature resistance

-30 °C

Temperature resistance

80 °C

Elongation - lengthwise

≥ 4 %

Elongation - crosswise

≥ 7,5 %

Elongation

EN 12311-1

Tensile strength - lengthwise

≥ 580 N / 50 mm

Tensile strength - crosswise

≥ 390 N / 50 mm

Tensile strength

EN 12311 - 1

Tear propagation resistance - lengthwise

≥ 80 N

Tear propagation resistance - crosswise

≥ 90 N

Tear propagation resistance

EN 12310-1

Storage

cool and dry

Fire performance

EN 13501_1 / EN 11925_2

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.