Damp Proofing & Membranes for Wellingborough, delivered to site

Choosing from our damp proofing range

• DPM sheetingHeavy-gauge polythene membrane under concrete floors.
• DPC rollsPolymer and bitumen damp-proof course in standard wall widths.
• Cavity trays and stop endsTo direct water out of the cavity over openings.
• Weep ventsFor drainage and ventilation at the base of cavities and over trays.

Before you order damp proofing

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.

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.

Sizing your order

An extension in Wellingborough with 24 m of cavity wall needs DPC in both leaves: about 2 rolls 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.

Before your Wellingborough delivery arrives

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

• Deliveries are to the kerb, drive or within crane reach; ask if materials need to go further.
• Mention any overhead cables, low branches or narrow gateways, because they decide whether a crane offload is possible.
• On busy streets in Wellingborough, a parking suspension or a quiet time slot can make offloading safer, so tell us about local restrictions you know of.

Your questions answered

What is the difference between DPC and DPM?

DPC is a strip built into walls to stop damp rising through the masonry. DPM is a sheet laid under a concrete floor slab. They are lapped together so there is no gap.

Do you deliver damp proofing to trades and homeowners in Wellingborough?

Both. Trades can apply for a trade account; homeowners and self-builders can order on a delivered quote.

Do you deliver damp proofing to Wellingborough?

Yes. We deliver across Wellingborough, including NN8, NN9, NN29, NN14. Wellingborough is inside our standard mainland delivery area. Send your list or call 0800 088 6341 and we will price it delivered to your postcode.

Do you supply cavity trays?

Yes, with stop ends and weep vents for openings and abutments.