Building Materials
Damp Proofing & Membranes delivery in Swansea
Damp proofing materials stop moisture rising or passing through a building: a damp-proof course (DPC) in the walls and a damp-proof membrane (DPM) under the floor.
For jobs in Swansea we quote damp proofing as a delivered price to your postcode, with the vehicle and offload method agreed up front.

Swansea delivery at a glance
- Postcode districts
- SA1, SA5, SA2
- How it arrives
- Rolls with a mixed load
- Delivery
- Standard mainland delivery
- Nearby (straight line)
- Clydach (5 mi), Briton Ferry (5 mi), Gorseinon (5 mi)
- Delivering to
- Swansea, West Glamorgan
- Daylight
- About 7h 48m on the shortest day
Which damp proofing can you order in Swansea?
- Weep ventsFor drainage and ventilation at the base of cavities and over trays.
- DPM sheetingHeavy-gauge polythene membrane under concrete floors.
- Cavity trays and stop endsTo direct water out of the cavity over openings.
- Radon barriersGas-resistant membranes for areas that need radon protection.
Getting damp proofing onto your Swansea site
Rolls are light enough to travel with a mixed load and are handed off at the kerb. Swansea is inside our standard mainland delivery area.
- Tell us the best drop point, such as a driveway, front garden or the kerb, and whether a lorry can park close to it.
- With roughly 7h 48m of daylight in Swansea around the shortest day, morning deliveries leave more working light for the job.
- Keep cement, plaster and boards dry: have a tarpaulin or a garage space ready before they arrive.
Picking the right product
DPC width
Match the DPC width to the wall leaf so it runs the full width of the masonry.
Laps and joints
DPM and DPC need generous laps and sealed joints; follow the manufacturer's guidance.
Wales has its own Approved Documents, including its own Part L for energy efficiency, and building control is handled by the local authority or a registered approver.
Sizing your order
An extension in Swansea with 28 m of cavity wall needs DPC in both leaves: about 3 rolls 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.
Ordering damp proofing for Swansea: FAQs
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.
Do you deliver damp proofing to Swansea?
Yes. We deliver across Swansea, including SA1, SA5, SA2. Swansea is inside our standard mainland delivery area. Send your list or call 0800 088 6341 and we will price it delivered to your postcode.
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.
Can you deliver damp proofing to a site with restricted access in Swansea?
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.
Also delivering damp proofing nearby
- Damp Proofing & Membranes in Clydach
- Damp Proofing & Membranes in Briton Ferry
- Damp Proofing & Membranes in Gorseinon
- Damp Proofing & Membranes in Neath
- Damp Proofing & Membranes in Llanelli
- Damp Proofing & Membranes in Ammanford
Also available in Swansea
Send your list, get a delivered price
Tell us what you need and where it is going. We check the quantities and come back with a delivered price before you commit.
