Damp Proofing & Membranes delivery in Beckenham

Damp Proofing & Membranes we supply in Beckenham

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

Estimating your damp proofing

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

Delivering damp proofing in Beckenham

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

• Tell us the best drop point, such as a driveway, front garden or the kerb, and whether a lorry can park close to it.
• Keep cement, plaster and boards dry: have a tarpaulin or a garage space ready before they arrive.
• If the site is up a shared drive or behind other houses, tell us the distance from the road.

Choosing damp proofing

Laps and joints

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

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.

Ordering damp proofing for Beckenham: FAQs

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

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

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 soon can damp proofing be delivered in Beckenham?

We confirm the delivery date when we price your order, before you commit. It depends on the product, the quantity and whether it is a stock line or made to order.

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.