Damp Proofing & Membranes for Horsham, delivered to site

Choosing from our damp proofing range

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

Getting damp proofing onto your Horsham site

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

• Weight limits on bridges or private roads near the site matter for larger lorries, so mention any you know of.
• With roughly 7h 54m of daylight in Horsham around the shortest day, morning deliveries leave more working light for the job.
• For a phased build we can split the order so materials arrive as each stage starts, which keeps the site clear.

How much will you need?

An extension in Horsham with 12 m of cavity wall needs DPC in both leaves: about 1 roll 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.

Damp Proofing & Membranes: choosing well

DPC width

Match the DPC width to the wall leaf so it runs the full width of the masonry.

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.

Common questions from Horsham

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.

Where does the DPC go?

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

Do you deliver damp proofing to Horsham?

Yes. We deliver across Horsham, including RH12, RH13. Horsham is inside our standard mainland delivery area. Send your list or call 0800 088 6341 and we will price it delivered to your postcode.

How soon can damp proofing be delivered in Horsham?

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.