Damp Proofing & Membranes delivered to Banstead

Damp Proofing & Membranes available for Banstead delivery

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

How much will you need?

An extension in Banstead with 36 m of cavity wall needs DPC in both leaves: about 3 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.

Picking the right product

Laps and joints

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

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.

Before your Banstead delivery arrives

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

• If the drop point is block paving or soft ground, say so; heavy pallets and bulk bags can mark or sink.
• Deliveries are to the kerb, drive or within crane reach; ask if materials need to go further.
• With roughly 7h 51m of daylight in Banstead around the shortest day, morning deliveries leave more working light for the job.

Damp Proofing & Membranes questions

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.

Can I add other materials to my Banstead 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.

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 Banstead?

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