This source is older than the others and is shown as a broad benchmark only. System design, drainage and pumping can dominate total cost.
✓ Benchmark, not quotation◎ Scope matters£ Check inclusions⌖ Compare local professionals
DampDeck cost guide
What changes the price?
£
Basement size, water pressure, system type, drainage channels, pumps, floor works and finishes.
Price depends on scope
DampDeck does not publish a made-up national price where the real scope can vary substantially.
Main cost drivers
Basement size, water pressure, system type, drainage channels, pumps, floor works and finishes.
Compare quotes properly
Make sure quotes describe the diagnosis, preparation, remedial work, making good, exclusions and any ongoing maintenance. A cheaper quote is not equivalent if the scope is different.
Published UK benchmark
£40–£250
per m²
This source is older than the others and is shown as a broad benchmark only. System design, drainage and pumping can dominate total cost.
