Damp Proofing & Membranes delivered to Altrincham

What damp proofing can we deliver to Altrincham?

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

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.

A quick quantity check

An extension in Altrincham with 36 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.

Delivering damp proofing in Altrincham

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

• Have someone on site for the delivery if you can, or agree a safe drop point with us in advance.
• Pallets left on a pavement can block the footway, so plan a drop point inside your boundary where you can.
• For a phased build we can split the order so materials arrive as each stage starts, which keeps the site clear.

Damp Proofing & Membranes questions

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

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

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 Altrincham?

Yes. We deliver across Altrincham, including WA14, WA15, M33, M23. Altrincham 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.