Damp Proofing & Membranes delivered to Washington

Damp Proofing & Membranes available for Washington delivery

• Cavity trays and stop endsTo direct water out of the cavity over openings.
• Radon barriersGas-resistant membranes for areas that need radon protection.
• Weep ventsFor drainage and ventilation at the base of cavities and over trays.
• DPC rollsPolymer and bitumen damp-proof course in standard wall widths.

Getting damp proofing onto your Washington site

Rolls are light enough to travel with a mixed load and are handed off at the kerb. Washington is inside our standard mainland delivery area.

• If neighbours share the access, it helps to let them know a lorry is coming.
• Mention any overhead cables, low branches or narrow gateways, because they decide whether a crane offload is possible.
• If the drop point is block paving or soft ground, say so; heavy pallets and bulk bags can mark or sink.

Working out quantities for your Washington job

An extension in Washington with 12 m of cavity wall needs DPC in both leaves: about 1 roll in 30 m lengths once laps are allowed for. A 20 m² floor slab needs about 23 m² of DPM including laps, which is 1 roll of 4 × 25 m sheeting.

Getting the right damp proofing

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.

Laps and joints

DPM and DPC need generous laps and sealed joints; follow the manufacturer's guidance.

In England, building work is checked against the Approved Documents, for example Part A for structure and Part L for energy efficiency, through your council's building control team or a registered building control approver.

Damp Proofing & Membranes in Washington: questions

Can I add other materials to my Washington 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.

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.

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.

Do you deliver damp proofing to Washington?

Yes. We deliver across Washington, including NE37, NE38, DH4, DH3. Washington is inside our standard mainland delivery area. Send your list or call 0800 088 6341 and we will price it delivered to your postcode.