Signature Build Properties is a trusted damp and mould specialist London homeowners call for damp proofing London, rising damp treatment London, black mould removal London and condensation treatment London. Moreover, all damp treatment London and mould treatment London work comes with a written guarantee, fixed prices and a free damp survey.
As a specialist damp and mould specialist London, we diagnose and treat all types of damp. Furthermore, we identify the root cause — not just the symptom — so the problem is fixed permanently.
Rising damp treatment London using damp proof course injection — a permanent chemical barrier that stops groundwater rising through walls. Includes full replastering with salt-resistant render.
Penetrating damp repair London — we identify and seal the external entry point, treat the affected wall and replaster. Consequently, the damp is eliminated at source rather than masked.
Professional black mould removal London — we treat and remove black mould safely, apply anti-fungal treatment and address the underlying condensation or damp cause. Health and safety compliant.
Condensation treatment London — we identify the root cause of condensation, improve ventilation, apply anti-condensation coatings and advise on heating patterns to prevent recurrence.
Our damp proofing London team eliminates damp permanently. In fact, the before and after results speak for themselves — from stained, damp walls to clean, dry, replastered finishes.
What is damp proofing cost London 2025? See typical treatment costs below. As your local damp proofing London specialist, we provide fixed-price written quotes after every free survey — no hidden costs.
As a general guide, damp treatment costs depend on the type of damp, severity and the area affected. For instance, a full rising damp treatment London for a ground floor costs £1,500–£4,000 including replastering. Nevertheless, all our prices are fixed upfront with no surprises at the end.
| Treatment Type | Typical Cost | Duration | Best For |
|---|---|---|---|
| Damp Survey & Written Report | Free | Half day | All properties |
| Black Mould Removal London | £200 – £800 | 1 day | Mould patches, bedroom, bathroom |
| Condensation Treatment London | £150 – £600 | 1 day | Condensation, cold walls |
| Damp Proof Course (per wall) | £300 – £800 | 1 day | Rising damp injection |
| Rising Damp Treatment London — 1 room | £800 – £2,000 | 2–3 days | Single room treatment |
| Rising Damp Treatment — full ground floor | £1,500 – £4,000 | 3–5 days | Full ground floor DPC |
| Penetrating Damp Repair London | £400 – £1,500 | 1–2 days | Leaking walls, roof, windows |
| Full Damp Proof Course London | £2,000 – £6,000 | 4–7 days | Whole house DPC + replaster |
All prices are indicative for London 2025. We provide a fixed-price written quote after a free damp survey — no hidden costs, ever.
From your first call to a dry, replastered wall — here's how our damp proofing London team diagnoses and permanently eliminates damp and mould from your property.
To begin with, our specialist visits your property and carries out a full damp and mould survey using moisture meters and thermal imaging. This identifies the type of damp, the source and the extent — completely free.
Following the survey, you receive a written report with photographs and a clear explanation of the findings. Furthermore, a fixed-price treatment plan is provided — so you know exactly what the damp treatment London will cost.
We always treat the root cause, not just the symptom. As a result, the damp is permanently resolved rather than temporarily masked. This is what separates our damp treatment London service from a standard paint-over job.
Our team then carries out the agreed treatment — DPC injection, mould removal, penetrating damp repair or condensation treatment. Throughout the process, the work area is protected and kept clean.
Where required, existing damp-affected plaster is hacked off, salt-resistant backing render applied and the walls replastered to a smooth finish. Consequently, the walls are ready to decorate within days.
Finally, we walk through the completed works with you. At that point, your written workmanship guarantee is issued. In short, if the damp returns within the guarantee period, we fix it at no charge.
Damp and mould never resolve on their own — in fact, they always get worse over time. Therefore, if you notice any of the signs below, call our damp and mould specialist London team for a free survey immediately.
"Had rising damp on the ground floor for years and two other companies just painted over it. Signature Build did a proper survey, injected a new DPC and replastered. Completely dry now — over a year later. Brilliant service."
"Black mould in the bedroom was affecting our daughter's asthma. Signature Build came quickly, removed all the mould safely, treated the walls and sorted the ventilation. The room has been mould-free ever since. Very professional."
"Full damp survey, written report and fixed price — exactly as promised. The team were clean, professional and the replastered walls look perfect. Wouldn't hesitate to recommend them for damp proofing in London."
Our damp proofing London team will visit your property, carry out a full damp and mould survey and give you a clear, honest, fixed-price treatment plan. The longer damp is left, the more damage it causes — so act now.
Contact us today to discuss your project and receive a no-obligation quote.
