Damp Proofing & Membranes for Hebburn, delivered to site

Choosing from our damp proofing range

• 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.
• Radon barriersGas-resistant membranes for areas that need radon protection.
• DPM sheetingHeavy-gauge polythene membrane under concrete floors.

How much will you need?

An extension in Hebburn with 32 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.

Getting damp proofing onto your Hebburn site

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

• If the site is up a shared drive or behind other houses, tell us the distance from the road.
• Mention any overhead cables, low branches or narrow gateways, because they decide whether a crane offload is possible.
• Tell us the best drop point, such as a driveway, front garden or the kerb, and whether a lorry can park close to it.

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.

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.

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.

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

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

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

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.

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.