Damp Proofing & Membranes for sites in Dyfed

Choosing from our damp proofing range

• DPM sheetingHeavy-gauge polythene membrane under concrete floors.
• Weep ventsFor drainage and ventilation at the base of cavities and over trays.
• DPC rollsPolymer and bitumen damp-proof course in standard wall widths.
• Radon barriersGas-resistant membranes for areas that need radon protection.
• Liquid DPM and tankingCoatings for screeds and below-ground walls.

Damp Proofing & Membranes delivered in Dyfed towns

• Damp Proofing & Membranes in Llanelli
• Damp Proofing & Membranes in Ammanford
• Damp Proofing & Membranes in Aberystwyth
• Damp Proofing & Membranes in Carmarthen
• Damp Proofing & Membranes in Haverfordwest
• Damp Proofing & Membranes in Milford Haven

Quantities: a worked example

An extension in Dyfed with 12 m of cavity wall needs DPC in both leaves: about 1 roll in 30 m lengths once laps are allowed for. A 40 m² floor slab needs about 46 m² of DPM including laps, which is 1 roll of 4 × 25 m sheeting.

Getting damp proofing onto your Dyfed site

Rolls are light enough to travel with a mixed load and are handed off at the kerb. Our standard mainland delivery area covers Dyfed.

• If the drop point is block paving or soft ground, say so; heavy pallets and bulk bags can mark or sink.
• For a phased build we can split the order so materials arrive as each stage starts, which keeps the site clear.
• Keep cement, plaster and boards dry: have a tarpaulin or a garage space ready before they arrive.

Picking the right product

DPC width

Match the DPC width to the wall leaf so it runs the full width of the masonry.

Is radon protection needed?

Parts of the UK need radon protection in new buildings and extensions. UKHSA radon maps show the areas; building control will tell you what applies.

Wales has its own Approved Documents, including its own Part L for energy efficiency, and building control is handled by the local authority or a registered approver.

Questions about damp proofing delivery in Dyfed

Do I need a radon barrier?

It depends on where you are. In radon-affected areas building control requires radon protection in new buildings and extensions.

Do you deliver damp proofing to Dyfed?

Yes. We deliver across Dyfed, including SA, SY. Our standard mainland delivery area covers Dyfed. Send your list or call 0800 088 6341 and we will price it delivered to your postcode.

Can I add other materials to my Dyfed delivery?

Yes. Put everything on one list, from damp proofing to fixings and PPE, and we will price it as one delivery where the products can travel together.

How thick should a DPM be?

1200-gauge polythene, around 300 microns, is a common specification for floor slabs. Your design may call for something different.