Speak to a Specialist
Speak to a Specialist
Hornsey · N8, N4, N22

Damp Survey Hornsey: Damp, Mould and Water Damage Assessment

The Assessment (what many people call a damp survey) is one non-destructive visit that finds the cause of damp, mould or a hidden leak across Hornsey and the surrounding area, with a clear, insurance-ready report.

★★★★★ 5.0 from 22 Google reviews
Quick answer: If you have damp, mould or a suspected water leak at a property in Hornsey, your first visit is a Damp, Mould and Water Damage Assessment. Our specialists carry out a non-destructive investigation to find the root cause, then give you a written report with photographs and a clear plan to fix it. Your report follows within 3 to 5 working days of the visit. We confirm the price on a written quote once we understand the problem. Call 020 3051 8478.

Damp, mould & leak services in Hornsey

Hornsey is dominated by Victorian and Edwardian terraced houses, purpose-built Edwardian mansion flats, and a scattering of mid-twentieth century local authority blocks. Many properties retain original solid brick walls, single-glazed sash windows and aged slate roofs, all of which make them particularly susceptible to moisture ingress, rising damp and persistent condensation throughout the year.

Leak Detection

Trace hidden water leaks without damage using thermal, acoustic and tracer-gas methods. Leak detection →

Damp, Mould and Water Damage Assessment

One visit that finds the cause of damp, mould or water damage, and tells rising damp, penetrating damp and condensation apart. About the Assessment →

Mould Treatment

Treat black mould and deal with the moisture source behind it, so it does not keep coming back. Mould treatment →

Structural Drying

Dry out walls, floors and voids after a leak or flood, monitored to completion. Structural drying →

Areas of Hornsey we cover

We visit properties right across Hornsey and its neighbourhoods, including:

Common damp problems in Hornsey homes

Rising Damp in Victorian Terraces

A large proportion of Hornsey's terraced streets, particularly around Stroud Green Road and the Harringay ladder roads, were built without modern damp-proof courses. Groundwater can wick steadily upward through the original brick and mortar, causing tide-marked plaster, peeling skirting boards and a persistent musty odour at ground-floor level that worsens considerably during wetter months.

Penetrating Damp Through Ageing Chimneys and Parapets

Hornsey's period properties carry a high density of original chimney stacks, bay window returns and parapet walls. Where pointing has eroded or lead flashings have lifted, rainwater penetrates directly into the masonry and tracks inward to internal walls. Residents in the upper floors of mansion flats near Alexandra Palace Road frequently discover damp patches that only become visible long after the source has allowed mould to become established.

Condensation Mould in Converted and Subdivided Properties

Many larger Hornsey villas and Edwardian houses have been converted into flats, often with minimal ventilation upgrades. Kitchens and bathrooms that were retrofitted into rooms without adequate extract fans generate high levels of moisture-laden air. This condenses on cold external walls and around original single-glazed window reveals, encouraging black mould growth that can spread to adjoining bedrooms if left untreated.

What our customers say

Excellent
Rated 5.0 / 5 based on 22 reviews on
Tip: If a damp patch keeps coming back after redecorating, it is almost always a symptom, not the problem. An assessment that finds the source first saves paying for the same repair twice.

Request an Assessment in Hornsey

Call 020 3051 8478 or send us your details and we will agree a date with you. We work with homeowners, landlords and property managers across Hornsey.

Frequently asked questions

How much does a Damp, Mould and Water Damage Assessment in Hornsey cost?
We confirm the price on a written quote once we understand the problem. Your first visit is a Damp, Mould and Water Damage Assessment, which includes the non-destructive investigation and an insurance-ready written report with photographs. If leak detection is needed, we quote for it separately before any work starts.
Do you cover the whole of Hornsey?
Yes. We visit properties across Hornsey and the surrounding neighbourhoods and postcodes.
Can you tell the difference between condensation, rising and penetrating damp?
Yes, and it matters because the fix differs for each. Our assessment identifies which type you have using moisture readings and thermal imaging.
Do you provide reports for insurance claims?
Yes. Every assessment comes with a clear written report including the cause, photographic evidence and recommendations, formatted for insurers and managing agents. Your report follows within 3 to 5 working days of the visit.

More help in Hornsey

Leak detection

Trace a hidden water leak in Hornsey using thermal, acoustic and tracer gas methods, with minimal damage. Leak detection in Hornsey →

Structural drying

Dry walls, floors and voids in Hornsey after a leak or flood, monitored to completion. Structural drying in Hornsey →

Mould removal

Treat black mould in your Hornsey property and fix the moisture source behind it. Mould removal in Hornsey →

See what you get before you speak to us: read a real report from start to finish.