Greater London · London and the South East
Roof leak investigation in Oakleigh Park, Greater London
Roof leak investigations in Oakleigh Park and the rest of Greater London. Surveys run on weekdays, Saturdays and Sundays.
- Wet patches high on an inside wall
- Leaks at a dormer or roof window
- Damp underlay across a wide area
About our roof leak investigation in Oakleigh Park
Moisture readings and thermal imaging are used where they’re useful. Moisture readings show which materials are wet. A thermal camera shows patterns of temperature rather than water, so we confirm what it suggests with moisture readings. Thermal imaging is part of the Premium Survey, and moisture detection comes with Standard. Thermal imaging works best after a sunny day, on a dry roof with little wind. Common reasons to book are leaks that appear only in driving rain and damp patches next to the stack, across flat roof details, slate and tile slopes and the roof space.
In London, leaks frequently start somewhere hidden: a butterfly roof’s central valley gutter, a parapet gutter, a chimney flashing or a flat roof over a back addition. Whether you’re tracing a leak or recording storm damage in Oakleigh Park, those are among the first places to look. Water from a hidden gutter can run along joists and show up a room or two away.
Report times depend on the survey you book: Basic within 48 hours, Standard in 24–48 hours and Premium the same day.
- Where
- Oakleigh Park (N20, N12, EN4)
- Region
- Greater London
- Prices
- From £150 inc. VAT
- Report
- Emailed report with photos and recommendations
- When we survey
- Weekdays and weekends
- Cover
- Professional indemnity and public liability
- Call
- 07833 053749
- Updated
- 27 October 2026
Your questions about roof leak investigations in Oakleigh Park
How do I find out if my home in Oakleigh Park is listed?
You can check whether a building is listed on Historic England’s list, and your council can tell you if it is in a conservation area. Listed building consent is needed for changes that affect a listed building’s special interest, and conservation areas can limit changes of roofing material.
Will parking be an issue for a roof survey in Oakleigh Park?
Parking in Oakleigh Park, as in most of London, takes a little planning: a visitor permit or a bay close to the door helps a lot, so mention what’s available as you book.
Is it a structural engineer’s report?
No. We’re experienced roof surveyors, and visible signs such as sagging are noted, but we do not provide calculations or an engineer’s opinion. The report will say if you need an engineer.
Do you need to get into the loft?
Yes, where the survey calls for it and there is safe access. Inside, we look for damp, staining, gaps and sagging.
Do you survey roofs on blocks of flats?
Yes. Shared roofs just need a little more planning. Mention it when you contact us and we will plan the survey around it.
Why does not the damp patch line up with the hole?
Water follows the easiest path, not the shortest. On a pitched roof it often runs down a rafter before it shows. Tracing that path is the heart of a leak investigation.
Can you always find the source?
Not every leak can be pinned down in a single visit. Most leave clues we can follow, but intermittent leaks that need particular weather can be harder. The report sets out what we found and the most likely routes.
How it works
A survey visit follows a simple order: we listen to what’s been worrying you, look at the roof from every safe viewpoint, photograph what we find and record our findings for the written report. It usually takes about 1–2 hours, more where the leak is intermittent or the roof is large. In a London conversion, the way into the roof space is frequently from a communal landing or the top flat. Where that’s the case, access needs agreeing with whoever controls that landing. Otherwise, the visit in Oakleigh Park runs like any other.
- We start with your notes and photos of the leak.
- We examine the damp area and the rooms near it.
- From the roof space, we trace the water’s route where there is safe access.
- We inspect the likely entry points outside, from ground level, windows and the roof where safe.
- You receive a report with the likely source, photos and recommendations.
Getting ready for the survey
- Keep pets inside or away from the areas we’re looking at
- Have keys ready for side gates, garages or roof access doors
- If it is not your property yet, arrange access through the agent
Arrange a survey
Surveys can be booked for weekdays, Saturdays or Sundays. To find a date that works for you, ring 07833 053749 or use the contact form with the address and the days you’d prefer.
Advice
Checking the roof from the ground
If you have a loft with safe access, take a look inside. Use a torch and stay on the joists or boards, checking for stains, damp wood or chinks of daylight.
Keep a simple record: dates of leaks, photos from ground level and any work done on the roof. Share it with us when you book and it will help the survey.
When to book a survey in Oakleigh Park
Condensation is often mistaken for a leak. Warm, moist air from the house rises into a cold roof space and condenses, especially where ventilation is poor. Wet nail tips and damp underlay over a wide area are classic signs.
We are often asked to look at:
- A leak that comes and goes with the weather
- Water through the ceiling under a flat roof
- Damp walls below an overflowing gutter
- Drips from nail tips in a cold loft
If you let a flat or house near Oakleigh Park station, finding the cause of a leak fast keeps a tenant’s home dry and the work focused.
Before you book any roof surveyor
- How long they’ve been surveying roofs
- Their report turnaround times
- Whether the loft space is looked at, where there is one
- Whether you get a written report with photos
Nearby places to Oakleigh Park
What else we do in Oakleigh Park
Roof leak investigations around Oakleigh Park
Alongside Victorian and Edwardian terraces, outer London has a great many interwar semis, often with hipped roofs of clay or concrete tiles. If your home in Oakleigh Park is one of them, bay roofs, hips and later dormers each have their own details. Knowing the roof type helps narrow down where water may be getting in. With Heath Hall about 3.5 miles south, Oakleigh Park sits in an area with a long building history. If yours is one of the older homes, expect a mix of original materials and later repairs on the roof.
Take a building like Queenswell Infant & Nursery School: on a building that size, finding the source of a drip means looking well beyond the stain. For businesses in and around places such as Grand Arcade, water through a ceiling can damage stock and close a sales floor, so the source needs finding fast.
Oakleigh Park is about 2 miles south-east of Barnet, in Greater London. Houses, flats, blocks and commercial buildings in Oakleigh Park can all book roof leak investigations, with a written report and photographs every time. We cover towns and villages across Greater London. There is also a page for London.
We work across the N20, N12 and EN4 postcode area for roof leak investigations and the streets around it. We offer roof leak investigations to properties on High Road, Swan Lane and Green Road. With the A1000 close by, Oakleigh Park is simple for us to get to for roof leak investigations. Other places close to Oakleigh Park include Whetstone (1 mile east), North Finchley (1 mile south), Woodside Park (1 mile south-west), East Barnet (1 mile north-east) and Brunswick Park (1 mile east). Further out, we also cover London (9 miles south), City of Westminster (8 miles south), Marylebone (8 miles south), Kensington (9 miles south), St Pancras (7 miles south) and Shoreditch (8 miles south-east).
Around Oakleigh Park
We work in homes and buildings around Finchley Catholic High School, Woodhouse College and Francis Skaryna Belarusian Library and Museum. Other local landmarks include Swan Lane Open Space (less than half a mile west) and Three Horseshoes pub (under half a mile north-west). Oakleigh Park’s nearest station is Oakleigh Park station, about 0.8 miles north of the centre. Other landmarks nearby include Finchley Memorial Hospital (1.4 miles south) and Francis Skaryna Belarusian Library and Museum (0.9 miles south-west). Green spaces nearby include Barfield Allotments Nature Park and Highgate Hill.
What a survey costs
When we price a survey, we consider:
- How tall the building is and how easy the roof is to see
- Extensions, dormers and garages with roofs of their own
- Whether you choose the Basic, Standard or Premium Survey
- The roof’s overall size
A Basic Survey starts from £150, inc. VAT. The Standard Survey starts from £250 and the Premium Survey from £400, both inc. VAT. You’ll know the price for your roof before booking.
Helping us price your survey
Getting the details right at the start saves time. Please include:
- Any deadline, such as an exchange date
- The kind of building and roof involved
- Pictures from the garden or a window, if you have them
- The reason for the survey, such as buying, a leak or storm damage
If you have photos of the roof, send them over. Pictures from the ground or a window are fine; never climb up to get a better view. To get started, ring 07833 053749 or send us an email.
What we look for on each type of roof
Parapet and box gutters
Some older terraces have a butterfly roof with a valley gutter in the middle. Problems there frequently show in the rooms on the top floor.
Valleys
A valley takes the rain from both sides of the roof. Split lead, cracked linings or slipped tiles let water in.
What this survey can’t tell you
Before you book, it is worth knowing what a survey will not do:
- The repair itself (the investigation finds and reports the cause)
- Whether rotten timbers meet design loads
- Plumbing leaks that look like roof leaks
Not sure which survey suits your roof? You can ring 07833 053749 or send us an email and we will tell you before booking. What a survey covers and does not.
What we look at
- Lead flashings
- The roof space
- Slate and tile slopes
- Valleys and parapet gutters
- Rooflights and dormers
- Flat roof details
- Chimney stacks