Damp proofing is crucial if your home has rising or penetrating damp. In Gwynedd, costs for injection damp proofing of a semi-detached house range from £2,905 (Building & Flat Roofing Contractors based in LL54) to the £3,040 (Cem Wills Plastering Services based in LL55), but the final cost will depend on your home and the complexity of the job.
Comparing estimates for damp proofing gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.
Get rates and quotes for damp proofing and remedial work in Gwynedd by posting a job with HaMuch and we will send it to plasterers who will be happy to help.

| Business name | Damp proofing cost |
|---|---|
| Kevin Hill Plastering, Caernarfon, LL54 | £2,986 |
| WJ Builders, Pwllheli, LL53 | £2,920 |
| Building & Flat Roofing Contractors, Caernarfon, LL54 | £2,905 |
| Cem Wills Plastering Services, CAERNARFON, LL55 | £3,040 |
| JL Scott Plastering, Bangor, LL57 | £3,004 |
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Damp Proofing near Conwy | £22 | £169 |
| Damp Proofing near Conway | £22 | £169 |
| Damp Proofing near Llandudno | £22 | £169 |
| Damp Proofing near Colwyn Bay | £22 | £169 |
| Damp Proofing near Rhyl | £22 | £166 |