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Speak to a Specialist
Alexandra Palace · N22, N8, N10

Damp, Mould & Leak Specialists in Alexandra Palace

Non-destructive damp surveys, hidden leak detection and mould investigation across Alexandra Palace and the surrounding area, with clear, insurance-ready reports.

★★★★★ 4.9 from 18 Google reviews · trusted by Alexandra Palace homeowners, landlords & property managers
Quick answer: If you have damp, mould or a suspected water leak at a property in Alexandra Palace, our specialists carry out a non-destructive survey to find the root cause, then give you a written report and a clear plan to fix it. A full damp and mould survey is a fixed £500. Call 020 3051 8478.

Damp, mould & leak services in Alexandra Palace

Alexandra Palace's housing sits mostly on the steep slopes below the palace itself, mixing late-Victorian and Edwardian terraces, the distinctive terracotta-fronted Noel Park estate, 1930s semis towards Bounds Green, and purpose-built mansion blocks and converted flats near the park. The hillside setting, solid brick walls and ageing slate roofs combine to trap moisture, encourage water runoff towards lower terraces and leave many converted flats poorly ventilated.

Leak Detection

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

Damp Investigation

Identify rising damp, penetrating damp and condensation, and tell them apart properly. Damp investigation →

Mould Inspection

Find the moisture source feeding the mould, not just treat the surface. Mould inspection →

Structural Drying

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

Areas of Alexandra Palace we cover

We survey properties right across Alexandra Palace and its neighbourhoods, including:

Common damp problems in Alexandra Palace homes

Hillside runoff and rising damp in Victorian terraces

Streets such as those off Alexandra Park Road and towards Hornsey sit on sloping ground, so surface water and groundwater run downhill towards older solid-wall terraces. Many of these Victorian and Edwardian houses lack effective damp-proof courses, and render or ground levels raised over the decades often bridge what protection exists, leading to rising and penetrating damp in ground-floor rooms and cellars.

Noel Park's terracotta terraces and roof deterioration

The Noel Park conservation area's patterned brick and terracotta terraces retain original slate roofs and decorative detailing that owners must repair sympathetically. Slipped slates, worn flashings and blocked Victorian guttering are common, letting water track into roof timbers and upper-floor ceilings, while conservation area restrictions can delay straightforward re-roofing or render repairs, allowing leaks to worsen.

Condensation in converted flats and mansion blocks near the park

Large Victorian villas and purpose-built mansion blocks around Alexandra Park have been divided into flats with limited through-ventilation, single extraction points and shared flat roofs. Bathrooms and kitchens without adequate extractor fans regularly show black mould on external walls and around window reveals, while ageing flat roof coverings on top-floor conversions allow slow leaks that are often mistaken for condensation until ceilings stain.

What our customers say

★★★★★

Really impressed with the whole experience. The surveyor did a proper, thorough job and didn't rush anything, they got to the root cause of the damp and explained it all clearly. Detailed, professional and reassuring from start to finish. Couldn't recommend them more highly.

Keiryn Raf, via Google

★★★★★

Very professional and organised I must say came out and completed the work very efficiently customer service was excellent. Definitely recommend this damp and mould service to anyone looking for a job done correctly. :)

Joeie Rouse, via Google

★★★★★

I have been dealing with damp and mould for years but these guys were able to come in and resolve the problem quickly and professionally. Their prices were fair and reasonable and they got the job done clean. 10/10 would use again and would recommend.

Thersa Waron Eurmind, via Google

Tip: If a damp patch keeps coming back after redecorating, it is almost always a symptom, not the problem. A survey that finds the source first saves paying for the same repair twice.

Book a survey in Alexandra Palace

Call 020 3051 8478 or request a survey online. We work with homeowners, landlords and property managers across Alexandra Palace. Works are on a 50% upfront, 50% on completion basis.

Frequently asked questions

How much does a damp survey in Alexandra Palace cost?
A damp and mould survey is a fixed £500, including the non-destructive investigation and an insurance-ready written report. Leak detection, if needed, is £800 to £1500 depending on scale.
Do you cover the whole of Alexandra Palace?
Yes. We survey properties across Alexandra Palace 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 survey identifies which type you have using moisture readings and thermal imaging.
Do you provide reports for insurance claims?
Yes. Every survey comes with a clear written report including the cause, photographic evidence and recommendations, formatted for insurers and managing agents.