Damp Proofing Northwood
Northwood is the leafy, large-house end of north west London, from the Arts and Crafts and neo-Tudor homes around Green Lane to the Moor Park estate, and its big properties and heavy tree cover bring their own damp problems. We diagnose the real cause, penetrating damp, condensation, rising damp or ground movement, and put it right. Survey-led, with a written 10 year guarantee.
Book a Northwood Damp Survey
0300 373 7251Survey-led diagnosis with a clear, written report. No obligation.
Damp in Northwood Homes
Northwood grew as one of the smarter Metro-land suburbs after the railway reached it in 1887, and it was built for space: large houses in their own grounds along Green Lane, Copse Wood Way and Ducks Hill Road, the exclusive Moor Park estate next door, and street after street of Arts and Crafts, neo-Tudor and neo-Georgian homes. These big houses, with their applied half-timber, render, deep bays and complex roofs, tend to suffer penetrating damp, where water gets in behind render or through a tired roof, rather than rising damp, and the larger ones with cellars can take in below-ground water too.
Closer to the old High Street is a protected triangle of ornate Victorian brick houses, solid-walled and locally listed. Here a bridged or failed damp proof course can let genuine rising damp up the wall, and these need breathable, sympathetic repair rather than modern impervious renders.
Then there is the setting. Northwood means the north wood, and it is one of the most heavily wooded suburbs in London, sitting on London clay over Reading beds with pebbly gravel on the hilltops. Large mature trees pull moisture out of shrinkable clay in summer, so the ground shifts with the seasons and walls crack, letting water track in. Working out which of these is behind your damp is exactly what a proper survey is for.
Damp Proofing Services in Northwood
Whatever the property and whatever the cause, we cover it, and we link each job to the right specialist treatment.
Penetrating Damp
Damp through render, applied timber, bays and roofs, the most common issue in Northwood's large period houses.
Rising Damp
Failed or missing damp proof courses in the older Victorian brick homes near the High Street, treated where confirmed.
Condensation & Mould
Black mould in sealed rooms and apartments, cured with the right ventilation rather than a damp proof course.
Cellar Waterproofing
Structural waterproofing and tanking for the cellars and lower-ground floors of Northwood's larger houses.
Timber & Rot
Woodworm, dry rot and wet rot in the timbers and applied half-timber of period and neo-Tudor homes, treated at the cause.
Damp Surveys
Independent, survey-led diagnosis with a clear written report, ideal for buyers of larger Northwood and Moor Park homes.
Signs of Damp in Northwood Homes
If you are seeing any of these, it is worth getting the cause checked before it spreads:
How We Work, Survey to Completion
Book a survey
We arrange a convenient visit to your property, anywhere across Northwood, Moor Park and Northwood Hills.
Diagnose the real cause
We use moisture readings and, where useful, thermal imaging to confirm whether it is penetrating damp, condensation, rising damp or ground movement, not guesswork.
Clear written report
You get a plain-English report setting out the cause, the recommended work and the costs, sympathetic to period and listed homes.
Carry out the work
Our technicians complete the treatment tidily and with minimal disruption, leaving the property clean.
Written guarantee
Installed work is backed by a written 10 year guarantee, transferable on sale.
What Our Customers Say
Genuine reviews from Advanced Damp customers.
"I scheduled a pre-purchase damp survey with Advanced Damp on the advice of a Level 3 building survey. The quality of the survey, performed by Lionel, was excellent and the report was very detailed with photos throughout. The customer service was also very attentive."
"Had the great experience for a Damp Survey. Very thorough on their report undertaken and prompt response to our enquiries. The very best of Lydia on sales and Lionel the surveyor. Highly recommended using their services."
"Lionel was brilliant. Expert, efficient and extremely helpful in answering our various queries."
Areas We Cover Around Northwood
We cover Northwood and the surrounding north west London and border area, including:
- Northwood
- Northwood Hills
- Moor Park
- Eastbury
- Eastcote
- Haste Hill
- Sandy Lodge
- Mount Vernon
- Ducks Hill
- Copse Wood
- Ruislip
- Pinner
- Hatch End
- Rickmansworth
- Batchworth
- Harefield
- Carpenders Park
- Northwood Common
Right next door? See our Pinner, Ruislip, Ickenham and Harrow pages, or our main London damp proofing page.
Damp Proofing Northwood FAQs
Which parts of Northwood do you cover?
I have damp in a large neo-Tudor or Arts and Crafts house in Northwood. What causes it?
I have damp in an older Victorian brick house near Northwood High Street. Is it rising damp?
Could the trees and clay be causing my damp?
How much does damp proofing cost in Northwood?
Is the work guaranteed?
Book a Damp Survey in Northwood
Get the real cause of your damp diagnosed by a specialist who understands Northwood property, from the large period houses of Moor Park to the ornate Victorian homes near the High Street, with a clear written report and honest advice.
Last updated June 2026 · Advanced Damp Ltd · Damp proofing in Northwood, London · 0300 373 7251