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Durelis VapourBlock

Airtight, reinforcing, moisture-resistant construction board with integrated vapour barrier
  • Description
  • Applications
  • Technical specifications
  • Stock range
  • Characteristics

Durelis VapourBlock is a Durelis board with an industrially applied, transparent vapour barrier on one side. Thanks to this technology, the VapourBlock vapour barrier has a constant high μ value of 185 (12mm) over the whole surface of the board. This is in contrast to traditional wooden board materials for which the μ value is significantly lower and may vary considerably. 


Combined with a TopFinish surface, this ensures that the board is extremely airtight (< 0.001³/ m²/h/Pa at 50Pa;12mm). It is important to always seal all joints and cracks with suitable airtight tape.

Durelis VapourBlock boards can be used in service class 2 (limited temperature and relative humidity), in biological hazard classes 1 and 2 of EN Standard 335-3.

Durelis VapourBlock is an ideal solution for applications in timber-frame construction and in low-energy passive house building. Using Durelis VapourBlock on the inside of a building (and vapour-permeable wood fibreboard such as FiberTech Top on the outside) offers the advantage of combining an air barrier, vapour barrier and structural reinforcement, all combined in a single layer of board.
General characteristics + Norm Unit Average values
Thickness EN 324-1 mm 12
Moisture level EN 322 % 6-10
Airtightness at 50 Pa EN 13829 m³/m²/h/Pa <0,001
Thermal insulation value EN 13986 W/m.K 0,144
Sound absorption coefficient EN 13986 250-500 Hz: 0,10 ; 1000-2000 Hz: 0,25
Atmospheric sound insulation EN 13986 dB 27,4 (18mm)
Water vapour permeability µ EN iso 12572 (dry cup) 510
Reaction to fire EN 13501-1 D-s2,d0
Formaldehyde content EN 210 mg/100g E1
Technical characteristics + Norm Unit 5/95 percentile values
Bending strength EN 310 N/mm² 18
Internal bond EN 319 N/mm² 0,45
Bending stiffness EN 310 N/mm² 2550
Swelling/24h EN 317 % 11
Internal bond after cyclic test EN 321 option 1 N/mm² 0,25
Swelling/24h EN 317 % 12
Lacquered Quantities per pack
Thickness EN 324-1 12
2800x1196 72

Please contact our sales team for more information about the technical capabilities regarding custom thicknesses and dimensions, and for minimum order requirements.

Material type
Chipboard
Norm
P5
Load-bearing applications in humid conditions
Structural
For structural applications
MR
MR
Use in humid conditions
Vapour diffusion
Vapour barrier
Finishes
TopFinish
The heat-treated TopFinish surface (TF) creates an extra-hard, sealed surface with greater impact resistance, and it is easy to clean. The increased concentration of natural paraffin in the surface increases its moisture resistance. Our boards with a TopFinish surface also score highly for air tightness. These advantages mean that boards with a TopFinish surface are particularly suitable for building applications.
VapourBlock
VapourBlock is a transparent, industrally applied vapour barrier. The VapourBlock vapour barrier has a constant high μ value of 185 (12mm) over the whole surface of the board. This is in contrast to traditional wooden board materials for which the μ value is significantly lower and can vary considerably.
Airtightness
Airtight

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