Speak to a Specialist
Speak to a Specialist
Holloway · N7, N19

Damp Survey Holloway: 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 Holloway 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 Holloway, 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 Holloway

Holloway's housing stock is dominated by Victorian and Edwardian terraced houses, purpose-built Edwardian mansion flats, and mid-twentieth century council blocks. Many properties along streets such as Herslet Road and Brecknock Road were subdivided into flats during the latter half of the twentieth century, creating shared drainage systems, poorly maintained party walls, and original single-brick construction that makes penetrating damp and condensation persistent concerns.

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 Holloway we cover

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

Common damp problems in Holloway homes

Rising and Penetrating Damp in Victorian Terraces

A large proportion of Holloway's terraced properties were built before damp-proof courses became standard practice. Where retrofit chemical DPC treatments have been applied, these often degrade or were poorly installed. Original solid brick walls along roads such as Duncombe Road and Mayton Street absorb rainwater readily, and ground-floor rooms frequently present with tide marks, salting, and peeling plaster consistent with rising or penetrating damp.

Condensation Mould in Converted Flats

Holloway contains a high concentration of Victorian houses converted into flats, many retaining single-glazed sash windows and minimal roof insulation. Tenant-occupied conversions on roads such as Hornsey Road and Seven Sisters Road frequently experience black mould growth in corners, around window frames, and on cold external walls. Poor extract ventilation in bathrooms and kitchens, combined with original solid wall construction, creates the thermal bridging conditions that drive persistent condensation.

Hidden Leaks in Shared and Ageing Drainage Infrastructure

Council-built blocks in Lower Holloway and properties around the Caledonian Road corridor share ageing internal drainage stacks that were never designed to serve the increased demand created by later flat conversions. Slow leaks from corroded cast-iron soil pipes and perished lead waste connections often remain undetected inside party walls for months, resulting in widespread timber decay, ceiling staining on lower floors, and structurally significant plaster deterioration.

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 Holloway

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 Holloway.

Frequently asked questions

How much does a Damp, Mould and Water Damage Assessment in Holloway 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 Holloway?
Yes. We visit properties across Holloway 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 Holloway

Leak detection

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

Structural drying

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

Mould removal

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

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