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Breathable Membrane & DPM

Prices are subject to change and are exclusive of VAT. Last update: 31/03/2018.


Polytheme 300MU BBA Black Damp Proof Membrane 4X25Mtr


A strict selective raw material policy ensures a consistently high quality DPM. Visqueen PIFA Damp Proof Membranes are a high quality range of polyethylene damp proof membranes. Manufactured from high quality reprocessed low density polyethylene (LDPE), Visqueen Damp Proof Membranes have successfully prevented moisture penetration from floors for many years.

- Colour: black (produced to PIFA Standard 6/83A:1995).
- Visqueen DPMs comply with the relevant Building Regulations and should be used in conjunction with the Visqueen Jointing System to ensure complete integrity of joints.
- Proven performance over many years.
- Manufactured from high quality reprocessed materials.
- 300 micron (1200 gauge).
- 4 metres wide x 25 metres long (100m2).


Price: £43.50



Harcon Vapour Permeable Underlay 125g 1500mm x 50m


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.


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 s 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.


Price: £55.59