Damp Proofing in Darlington
Damp doesn't get easier to live with the longer it's left, so if there's a tide mark, blown plaster or spreading mould at a property in Darlington, we'll survey it, tell you honestly what's causing it and fix it — one of many jobs we handle regularly across County Durham.
Quick answer
Damp proofing in Darlington starts with a free survey to diagnose whether it's rising, penetrating or condensation damp, followed by a fixed written quote. Most single-wall treatments start from around £350, with the work carried out at the source and backed by a written guarantee.
How does damp proofing work in Darlington?
In the North of England, older solid-brick and stone properties are common, and exposure to driving rain makes penetrating damp through failed pointing and render a frequent cause alongside classic rising damp.
Every quote for damp work in Darlington is confirmed as a fixed written price after the survey — an itemised figure for the recommended treatment, not an estimate that moves once the work starts.
Every job in Darlington starts with a survey and a fixed written price before any work begins — get in touch through the contact form with your postcode and a short description. You can see indicative costs on our price guide or read the full how it works steps.
Damp services available in Darlington
Whether it's rising damp treatment on a ground-floor wall, penetrating damp treatment where water is getting in from outside, or condensation and mould control in a poorly ventilated room, every job in Darlington starts with a proper damp survey to confirm the cause. From there we install a new damp-proof course where needed, follow up with damp-proof re-plastering, and deal with any woodworm and timber treatment or basement waterproofing the property needs.
Damp Proofing Price Guide
Indicative pricing — every job gets a fixed, written quote after a survey. No hidden extras.
Damp survey & report
diagnosis
Free
Free for straightforward jobs; a detailed independent survey report is available for mortgage or purchase cases.
DPC injection (per wall)
rising damp
from £350
Chemical damp-proof course injection to a single affected wall — priced by length and access.
Damp-proof re-plaster
per room
from £600
Salt-resistant re-plastering after treatment, so the wall can be redecorated cleanly.
Basement / cellar tanking
waterproofing
from £1500
Structural waterproofing (tanking or cavity membrane) — quoted per project after survey.
Common damp problems we treat in Darlington
Rising damp
Tide marks and salt staining up to about a metre on ground-floor walls.
Penetrating damp
Damp patches at any height that appear or worsen after heavy rain.
Condensation & mould
Black mould in corners and around windows, and streaming glass in winter.
Damp-affected timber
Wet rot, dry rot or woodworm where moisture has reached joists and skirtings.
Related damp services in Darlington
Rising Damp Treatment
Tide marks, salt staining and blown plaster on ground-floor walls treated at the source
Damp-Proof Course (DPC) Injection
Installing a new chemical damp-proof course where the original has failed
Penetrating Damp Treatment
Damp patches at any height caused by water getting in from outside
Damp proofing in Darlington — frequently asked questions
Do you tank basements and cellars?
Yes — we waterproof basements and cellars using tanking slurry or a cavity drain membrane system depending on the structure and how the space will be used. This is quoted individually after a survey as it varies a lot property to property.
Is there a charge just for a quote?
No. A survey and fixed written quote for standard domestic damp work are free with no obligation to book. Only a formal independent survey report is a separate, paid service, which we agree with you beforehand.
What other areas near Darlington do you cover?
We cover Darlington as part of a wider service area — see the nearby towns listed on this page, or get in touch with your postcode and we’ll confirm coverage.
How long does damp proofing last?
A correctly installed damp-proof course and salt-resistant re-plaster should last for decades, which is why the work is backed by a written guarantee. The key is treating the actual cause, not just covering the symptom — which is what the survey stage is for.
Do you cover both homes and commercial properties?
Yes — we treat damp in houses, flats and commercial premises, from a single damp wall in a home to larger surveys and waterproofing for landlords, letting agents and commercial buildings.
How and when do I pay?
Larger jobs are typically arranged with a deposit to book the work and the balance on completion. Full payment terms are set out in your written quote before anything starts — nothing to pay just for a survey and quote.
Damp is treated by cause, not by symptom: rising, penetrating and condensation damp look similar but need completely different treatments, which is why every job starts with a proper survey and diagnosis before any work is quoted.
Book a free damp survey in Darlington
Tell us about the damp and your postcode — we'll arrange a survey and a fixed written quote.