Harcon Vapour Permeable Underlay (VPU) (50m x 1m)

Additional Information

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Product code: VPU100DL

Estimated delivery: 2 - 3 Days

1+
£72.06 inc vat £60.05ex vat
16+
£69.52 inc vat £57.93ex vat
30+
£66.14 inc vat £55.12ex vat
60+
£62.96 inc vat £52.47ex vat

Harcon Vapour Permeable Premier Underlay (50m x 1m)

Water Vapour Resistance 0.20 MNs/g
Superb water resistance 3.0m
BBA certified – 04/4145
Excellent nail and tear strength 105N when tested to MOAT 27:5:4:1
Complies with BS5534
No nuisance noise
Good UV stability
Easily identifiable bright blue colour
Lap lines printed for easy installation

MATERIAL

Harcon VPU has a 3 layer composite structure with the highly vapour permeable film bonded between two layers of nonwoven polypropylene.The top polypropylene layer provides high levels of water resistance while the bottom layer provides the strength for this flexible breather membrane which can be used in both unsupported and fully supported applications.

PRODUCT DETAILS

Thickness

0.5mm

Weight

0.125kg/m2

Width

1000mm

Length

Roll Weight

6.25kg

Colour

Bright Blue

PURPOSE

A vapour permeable membrane has 4 functions to perform.

1 Condensation Control
   It allows warm moist air generated in the building to pass freely through it, helping to prevent condensation in the roof. As it is waterproof    the water drops created by the condensation which forms on the primary roof covering will simply roll down the Harcon VPU into the   gutter.

2 Secondary Roof Covering
   Stops any rain or snow which penetrates the roof tiles or slates getting into the building below.

3 Temporary waterproofing
   During construction and if the primary roof covering is damaged Harcon VPU will protect the structure below.

4 Wind
   Harcon VPU will prevent wind and any particles it may be carrying entering the roof void.