Damp Proofing & Membranes delivered across Cornwall

Damp Proofing & Membranes we supply in Cornwall

• Liquid DPM and tankingCoatings for screeds and below-ground walls.
• DPC rollsPolymer and bitumen damp-proof course in standard wall widths.
• DPM sheetingHeavy-gauge polythene membrane under concrete floors.
• 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.

Damp Proofing & Membranes delivered in Cornwall towns

• Damp Proofing & Membranes in Redruth
• Damp Proofing & Membranes in Falmouth
• Damp Proofing & Membranes in St Austell
• Damp Proofing & Membranes in Truro
• Damp Proofing & Membranes in Camborne
• Damp Proofing & Membranes in Newquay

Sizing your order

An extension in Cornwall with 16 m of cavity wall needs DPC in both leaves: about 2 rolls in 30 m lengths once laps are allowed for. A 20 m² floor slab needs about 23 m² of DPM including laps, which is 1 roll of 4 × 25 m sheeting.

Delivering damp proofing in Cornwall

Rolls are light enough to travel with a mixed load and are handed off at the kerb. Our standard mainland delivery area covers Cornwall.

• If neighbours share the access, it helps to let them know a lorry is coming.
• Pallets left on a pavement can block the footway, so plan a drop point inside your boundary where you can.
• On busy streets in Cornwall, a parking suspension or a quiet time slot can make offloading safer, so tell us about local restrictions you know of.

Damp Proofing & Membranes: choosing well

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.

Damp Proofing & Membranes questions

Where does the DPC go?

Usually at least 150 mm above outside ground level, linked to the floor DPM.

How soon can damp proofing be delivered in Cornwall?

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.

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

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

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.