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ÖKO NATUR Vapour Retarder fabric-reinforced

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

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

Advantages

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

Product data

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
E
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.
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