Damp proofing cost: what it really costs in 2026
A Qome Snap Guide: quick, honest and no guff. Approximate figures, adjusted to your region inside Qome.
Snap answer
£80 – £280 /m
A damp-proof course injection starts around £80 per metre of wall. Membrane systems run about £160/m, and full tanking £280/m.
Takes2–5 days on site, weeks of dryingDisruptionModerate, affected rooms out of action while drying
Cost at a glance
| Option | Best for | Guide range |
|---|
| DPC injection | Rising damp in walls | £80 /m |
| Membrane system | Persistent damp, uneven walls | £160 /m |
| Tanking | Below-ground or severe cases | £280 /m |
Approximate guide figures, not quotes, Qome adjusts every price to your region.
What actually happens
- Independent survey, find the actual cause first
- Skirting off and plaster hacked back to brick
- Treatment applied: injection, membrane or tank coat
- Walls left to dry (longer than you'd think)
- Re-plastered with salt-resistant render
- Skirting and decoration once fully dry
Price by region
Starting figures by region, the same honest baseline, adjusted for where you live.
London (Inner)from £124 /m
London (Outer)from £108 /m
South Eastfrom £96 /m
East of Englandfrom £88 /m
South Westfrom £84 /m
Scotland (Highlands)from £76 /m
West Midlandsfrom £75 /m
North Westfrom £74 /m
East Midlandsfrom £74 /m
Scotland (Central)from £73 /m
Yorkshirefrom £72 /m
Walesfrom £70 /m
North Eastfrom £68 /m
Northern Irelandfrom £66 /m
Popular choices
Cavity drain membranesBreathable lime plaster on period homesImproved ventilation alongside treatment
Rules & regulations
- No specific regulations, but beware: most 'rising damp' is actually condensation or a leak, which injection won't fix
- Use a PCA-member surveyor and get an insurance-backed guarantee
Snap tips
- Pay for an independent survey, not a free one from the company selling the treatment
- Fix gutters, ground levels and ventilation first, half of damp jobs need no chemicals at all
Price it properly on Qome
Choose your options and see an honest, region-adjusted estimate, free.