Damp Proofing & Membranes delivered to New Malden

Damp Proofing & Membranes available for New Malden delivery

• Radon barriersGas-resistant membranes for areas that need radon protection.
• 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.

Planning the drop in New Malden

Rolls are light enough to travel with a mixed load and are handed off at the kerb. New Malden 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.
• Give us the full postcode for the drop point; deliveries around KT3 are priced to the exact address.

Working out quantities for your New Malden job

An extension in New Malden with 32 m of cavity wall needs DPC in both leaves: about 3 rolls in 30 m lengths once laps are allowed for. A 30 m² floor slab needs about 34.5 m² of DPM including laps, which is 1 roll of 4 × 25 m sheeting.

Before you order 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.

DPC width

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

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.

Common questions from New Malden

Do you deliver damp proofing to New Malden?

Yes. We deliver across New Malden, including KT3, KT4, SW20, KT6. New Malden is inside our standard mainland delivery area. Send your list or call 0800 088 6341 and we will price it delivered to your postcode.

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.

Can you deliver damp proofing to a site with restricted access in New Malden?

Usually, yes. Tell us about the access when you ask for a price and we will plan the vehicle and offload, or say if a smaller vehicle is needed.

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.