Damp Proofing & Membranes delivery in Gravesend

Which damp proofing can you order in Gravesend?

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

How delivery works in Gravesend

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

• If neighbours share the access, it helps to let them know a lorry is coming.
• With roughly 7h 50m of daylight in Gravesend around the shortest day, morning deliveries leave more working light for the job.
• Give us the full postcode for the drop point; deliveries around DA12 are priced to the exact address.

Estimating your damp proofing

An extension in Gravesend with 28 m of cavity wall needs DPC in both leaves: about 3 rolls in 30 m lengths once laps are allowed for. A 15 m² floor slab needs about 17.2 m² of DPM including laps, which is 1 roll of 4 × 25 m sheeting.

Before you order 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

Do you supply cavity trays?

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

Do you deliver damp proofing to Gravesend?

Yes. We deliver across Gravesend, including DA12, DA11, DA10. Gravesend is inside our standard mainland delivery area. Send your list or call 0800 088 6341 and we will price it delivered to your postcode.

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

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.