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FH FORTE Fleece Vapour Retarder

FH FORTE Fleece Vapour Retarder
is a supple vapour barrier for the airtight layer in roof, ceiling and wall construction. FH FORTE Fleece Vapour Retarder is generally for use in construction components that are vapour-permeable on the outside.
  • for sub-top use in refurbishment

Available dimensions

Article number Roll width Roll length Rolls / Pallet Total area Inquiry List
2FHFVDB 1.5 m 50 m 30 rolls 2250 m²
2FHFVDB3 3 m 50 m 30 rolls 4500 m²

Field of application

  • for roof and wall constructions
  • for exterior vapour permeable structural elements
  • in the interior

Advantages

  • transparent
  • soft, pliant
  • easy to install

Product data

a transparent vapour retarder for the airtight layer in roof and wall constructions. In general FH FORTE Fleece Vapour Retarder is suitable for use in building components that are non-vapour retardant on the outside. In constructions that are well sealed on the exterior (e.g. flat roofs, renovations) the low sd-value guarantees a high degree of drying towards the interior during the summer months. A check should be made in every case by carrying out a calculation (e.g. with WUFI) to ensure the suitability of this option. ISOCELL’s staff will be pleased to offer you technical support. The FH FORTE Fleece Vapour Retarder can also be used for the sub-and-top system in refurbishment.
Material composition
PP fleece + PP film
Colour
White transparent
Weight
120 g/m²
Weight per unit area
EN 1849-2
sd-value
2 m
sd-value
(± 1)
sd-value - Standard
EN 1931
Temperature resistance
-40 °C
Temperature resistance
80 °C
Elongation - lengthwise
> 50 %
Elongation - crosswise
> 60 %
Elongation
EN 12311-2
Tensile strength - lengthwise
> 210 (-30) N / 50 mm
Tensile strength - crosswise
> 180 (-40) N / 50 mm
Tensile strength
EN 12311-2
Tear propagation resistance - lengthwise
> 180 (-30) N
Tear propagation resistance - crosswise
> 230 (-40) 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