Damp Proof Membrane - 4m x 5m - 250mu

Name: Damp Proof Membrane - 4m x 5m - 250mu
Brand: Siteworx
SKU: vokagm3r4c
Availability: InStock

The Siteworx Damp Proof Membrane provides essential moisture protection designed to prevent damp p...

Best current price£33.30from Brick Superstore

Best offers

Shopping.co.uk recommended and popular offers

Lowest priceMost popular

Brick Superstore£33.30Visit shop

Siteworx Damp Proof Membrane Mini Pack 1000G/250Mu - 4M X 5M

Visit shop

All Offers

2 offers from £33.30 - £38.03

View price history by clicking the chart icon.

Brick SuperstoreSiteworx Damp Proof Membrane Mini Pack 1000G/250Mu - 4M X 5M

£24.00 delivery

£33.30

Visit shop

Bradfords Radbar Damp Proof Membrane Handy Pack (250Mu) 4Mtr X 5Mtr Black

£25.00 delivery

£38.03

Visit shop

Product Information

Full details

The Siteworx Damp Proof Membrane (250mu) is an essential solution for contractors and DIY renovators seeking to protect subfloors and structures from ground moisture. It provides a robust, high-performance barrier that ensures flooring materials remain dry and free from damp-related deterioration, though its large 4m x 5m sheet size requires sufficient workspace and careful handling during installation.

All features

Model Part Number	SDP452
Brand	Siteworx

Extended Product Information

FAQs

Can this membrane be used under underfloor heating?

Yes, it is designed to manage moisture, but ensure you follow the specific heat resistance guidelines of your underfloor heating manufacturer.

Is this product suitable for use on walls?

This membrane is specifically optimized for flooring applications. For wall damp-proofing, use a cavity drain membrane system designed for vertical surfaces.

Does it need to be taped at the joints?

Yes, to maintain a continuous moisture barrier, all joints and overlaps must be sealed using a high-quality damp-proof membrane tape.

Is 250 microns thick enough for high traffic areas?

Yes, 250 microns (250mu) provides the necessary thickness for high puncture resistance and industrial-grade moisture protection.

Can I use this over an existing wood floor?

While it can be used on wood, it is primarily intended for concrete and screed substrates. Ensure the wood floor is structurally sound and dry first.

Troubleshooting

Membrane is sliding during installation

Use temporary weights or low-tack masking tape to hold edges in place until the finish flooring or perimeter beading is applied.

Difficulty creating a smooth, flat surface

Ensure the subfloor is level and sweep away all grit or sharp concrete protrusions before rolling out the membrane.

Pros and Cons

Pros

High puncture resistance prevents tearing during installation
Environmentally conscious design using recycled materials
Meets industry-recognized PIFA standards for moisture protection
Simple to cut and lay for both professionals and hobbyists

Cons

Requires careful storage to avoid heat damage
Large sheet size can be cumbersome to manage in small, enclosed rooms
Requires proper sealing materials (tapes/lap joints) which are sold separately

Setup, Compatibility & Care

To achieve maximum performance, ensure the subfloor is clean, dry, and free of debris that could cause tears before laying the membrane. Roll out the sheet and overlap joints by at least 150mm, ensuring all seams are sealed tightly with high-quality damp-proof tape to create an airtight seal. The membrane should be laid flat, avoiding wrinkles or bunching that could interfere with flooring levels. For long-term maintenance, ensure the membrane remains puncture-free during the installation of your finish flooring. Store the roll in a cool, dry place away from direct sunlight and sharp objects to maintain its integrity before use.