Damp Proofing & Membranes delivered across County Londonderry

Damp Proofing & Membranes we supply in County Londonderry

• Radon barriersGas-resistant membranes for areas that need radon protection.
• 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.
• DPC rollsPolymer and bitumen damp-proof course in standard wall widths.
• DPM sheetingHeavy-gauge polythene membrane under concrete floors.

Damp Proofing & Membranes delivered in County Londonderry towns

• Damp Proofing & Membranes in Derry/Londonderry
• Damp Proofing & Membranes in Coleraine
• Damp Proofing & Membranes in Limavady
• Damp Proofing & Membranes in Magherafelt

Working out quantities for your County Londonderry job

An extension in County Londonderry with 12 m of cavity wall needs DPC in both leaves: about 1 roll in 30 m lengths once laps are allowed for. A 50 m² floor slab needs about 57.5 m² of DPM including laps, which is 1 roll of 4 × 25 m sheeting.

Delivering damp proofing in County Londonderry

Rolls are light enough to travel with a mixed load and are handed off at the kerb. Deliveries to Northern Ireland include a sea crossing, so we quote each order individually.

• If the site is up a shared drive or behind other houses, tell us the distance from the road.
• Have someone on site for the delivery if you can, or agree a safe drop point with us in advance.
• Mention any overhead cables, low branches or narrow gateways, because they decide whether a crane offload is possible.

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 Northern Ireland building work follows the Building Regulations (Northern Ireland), with guidance in the Technical Booklets, and applications go to the council's building control team.

Damp Proofing & Membranes questions

Do you supply cavity trays?

Yes, with stop ends and weep vents for openings and abutments.

How soon can damp proofing be delivered in County Londonderry?

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.

Is there a minimum order for delivery to County Londonderry?

There is no fixed minimum. For very small orders we will tell you honestly if the delivery cost outweighs the materials, so you can decide.

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.