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Brick Superstore£21.00Visit shop Siteworx Damp Proof Membrane Mini Pack 1000G/250Mu - 3M X 4M
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The SITEWORX Damp Proof Membrane is an essential solution for professional builders and DIY enthusiasts looking to protect floors and foundations from moisture ingress. This BBA-approved, 1000g heavy-duty polythene sheet provides a robust barrier against water and damp, ensuring long-term structural integrity for interior construction projects. While its 3m x 4m dimensions are perfect for small-to-medium areas or spot repairs, users should note that for larger continuous flooring projects, multiple sheets will need to be carefully overlapped and taped to maintain a complete seal.
| Model Part Number | SDP342 |
|---|---|
| Brand | Siteworx |
This product is primarily designed for floor applications; consult a professional before using it on walls.
Yes, it is BBA approved, which is a recognized mark of quality for building construction compliance in the UK.
Check the specific compatibility requirements of your floor heating system, as some systems require specialized membranes.
Overlap the sheets by 150mm and seal the seam thoroughly with approved damp-proof membrane jointing tape.
It is a heavy-duty polythene sheet designed to act as a significant barrier against both moisture vapor and liquid water ingress.
Clear all sharp debris from the subfloor surface before laying and patch existing holes with high-quality damp-proof jointing tape.
Use temporary weights at the corners while positioning and ensure the surface is as level as possible before laying.
To install, ensure the subfloor is clean, level, and free of sharp protrusions that could puncture the material. Roll out the SITEWORX membrane, ensuring that edges overlap by at least 150mm when using multiple sections; these overlaps must be sealed with a suitable damp-proof membrane tape to maintain a continuous moisture barrier. The membrane is compatible with most standard concrete slabs and screeds. For care, keep the material stored in its original packaging away from direct sunlight and sharp objects until you are ready to install. If punctured during installation, patch the area immediately with a dedicated jointing tape to maintain the integrity of the barrier.
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