Greater London · London and the South East
Roof Leak Investigation in Sipson
Know where you stand with the leaking roof before you spend money on it. Roof leak investigations in Sipson.
- Water through the ceiling under a flat roof
- Stains around a skylight
- Damp on a chimney breast
When to book a survey in Sipson
When a slate slips or a tile cracks, the underlay takes the water. Ageing felt underlay eventually tears and lets water through, while some very old roofs have nothing under the coverings. Corroded nails, known as ‘nail fatigue’, are a frequent cause on slate roofs.
Signs worth acting on include:
- Damp patches next to the stack
- Condensation that looks like a leak
- Wet patches high on an inside wall
- Leaks below a flat extension roof
If you live near a park such as Lake Farm Country Park, or anywhere with mature trees, autumn leaves can block gutters and valleys, and blocked gutters overflow and soak walls.
What to check before booking
- How they’ll see the roof: from ground level, the loft, the roof or by drone
- Will they check the loft as well as the outside?
- Whether VAT is added on top
- Whether you can ask questions once you have the report
Roof leak investigation in Sipson
Some leaks only appear in certain weather. Driving rain from one direction, melting snow or a gutter that overflows in a downpour can all set it off. Telling us when it happens helps a lot and so do photos. We look for the clues it leaves behind, such as tide marks, stained timbers and damp underlay. Moisture readings show where materials are still wet. Typical surveys look at a leak that comes and goes with the weather and water marks that spread in wet weather, on chimney stacks, slate and tile slopes and rooflights and dormers.
In converted houses and blocks across London, water from a roof can run a long way before it shows on a ceiling. Tracing it back matters, both for dealing with the cause and for any insurance claim. In Sipson, we inspect what we can reach safely and are given access to. It is useful to know when the water appears and in what weather.
How fast the report arrives depends on the package: Basic within 48 hours, Standard in 24–48 hours and Premium the same day.
- Place
- Sipson (UB7, UB3)
- Region
- Greater London
- Cost
- From £150 inc. VAT
- Report
- A written report with photos, by email
- When we survey
- Monday to Sunday, daytime
- Cover
- Professional indemnity and public liability
- Phone
- 07833 053749
- Page updated
- 27 October 2026
Other services in Sipson
Useful tips for Sipson property owners
These tips come from what we see on roofs every week, before and after a survey:
- Do not touch fittings that water is reaching
- Let us know if there are tanks or pipes in the loft
- Check the loft is accessible
- Write down the wind direction and rain when it leaks
Once the work is done, hold on to the report. If the leak returns, it’s a useful record of what was found, which makes the next step quicker.
Check the loft after heavy rain, with care and a good torch. Look for drips, damp patches and stains on timbers. Take photos of anything that changes.
Leaks and storm damage in Sipson
In outer London, interwar semis with hipped, tiled roofs sit alongside older slate-roofed terraces. If your home in Sipson is one of them, bay roofs, hips and later dormers each have their own details. Each of these roof types has its own typical places for water to get in. About 4.3 miles east lies Osterley House, a reminder of how long the area around Sipson has been built on. If yours is one of the older homes, expect a mix of original materials and later repairs on the roof, and a listed home or one in a conservation area may need consent for changes of material.
If you look after a shop, office or commercial unit, for instance near The Chimes, a quick answer on where water is coming in keeps a business running. Anyone responsible for a site like Cherry Lane Primary School will know that on a building that size, finding the source of a drip means looking well beyond the stain.
Sipson is about 1 mile south-east of West Drayton, in Greater London. We survey roofs in Sipson and the surrounding area across London and South East England. Sipson is one of the places in Greater London where we work for roof leak investigations. We also survey roofs in London.
Postcode districts we cover here for roof leak investigations: UB7 and UB3. Local streets include East Road, Sipson Lane and Sipson Road, and we cover them all. Neighbouring places we cover for roof leak investigations include Harlington (1 mile south-east), Harmondsworth (1 mile south-west), Heathrow (2 miles south), Cranford (2 miles south-east) and Longford (2 miles south-west). We also work in nearby towns such as London (15 miles east), City of Westminster (13 miles east), Marylebone (13 miles east), Kensington (11 miles east), St Pancras (14 miles east) and Hampstead (12 miles east).
Landmarks near Sipson
Typical jobs here are in homes near Lake Farm Country Park, Harlington Community School and The Plough pub. For rail, the closest station is West Drayton station, roughly 1.4 miles north-west. Well-known places in the area include The Chimes (3.7 miles north) and Harlington (within half a mile south). Open spaces near Sipson include Northala Fields and Crane Meadows.
Why it is worth a survey now in Sipson
Lingering damp encourages mould on ceilings and walls. Once mould takes hold, it’s harder to clear. Finding the leak comes first. Many older London roofs have only old felt under the slates, or no underlay at all, so once the slates or flashings let water past, little stops it reaching ceilings. Left alone, that means wet timbers and plaster, which is a far bigger job than the roof fault itself.
There are three survey packages: Basic from £150, Standard from £250 and Premium from £400, all including VAT. What your roof costs depends on its size, access and what you want to find out.
Why book us in Sipson
- Covered by professional indemnity and public liability insurance
- More than 20 years surveying roofs
- An independent view of the roof
- Weekday and weekend surveys
Read how roof surveys are priced and our case studies.
Sipson questions
How do I find out if my home in Sipson is listed?
Check Historic England’s online list first, then ask the council about conservation areas and any Article 4 direction. The answer matters most when a change of material is on the cards.
Is parking a problem for a survey in Sipson?
Sometimes, yes. If Sipson has controlled parking where you are, a visitor permit is the easiest answer.
Will you fix the leak as part of this?
A leak investigation finds and reports the likely source. The repair is not part of it. The report shows where the water gets in and what should be done.
How do you tell a leak from condensation?
Condensation can look very like a leak. Drips from nail tips, damp underlay over a wide area and poor loft ventilation point towards condensation. We check the pattern of damp and the ventilation, then say which is most likely.
What does a roof survey cost?
Roof leak investigation starts from £150, including VAT. What you pay for your roof depends on its size, height, access and the package.
Are you structural engineers?
No. We’re roof surveyors, not structural engineers. We will recommend an engineer if we see signs that call for one.
Will you definitely find the leak?
We cannot promise it. Water can travel a long way, and some leaks only show in particular storms. If we cannot be sure, the report ranks the possible sources.
What we look for on each type of roof
Parapet and box gutters
We check the linings, joints and outlets where we can see them safely, and look for signs of past overflowing.
Chimney stacks
A stack has several possible ways in for rain. We check each one as far as we can safely see.
How it works
Time on site depends on the size and shape of the roof; as a rough guide, the survey takes an hour or two on an ordinary house, and about three to four hours for a commercial roof. You are welcome to ask questions while we’re there. Surveys in Sipson can be booked for any day of the week. It helps if you can point us to a visitor permit or a nearby bay, and to clear a path to the loft hatch. Upstairs rooms at the back are useful too, as they frequently give the best view of a rear addition.
- You tell us where the water shows and when it appears.
- The visit starts indoors, at the stain and in the loft.
- Likely entry points outside are checked, from flashings and valleys to gutters and outlets.
- Moisture readings and thermal imaging are used where they help.
- Your report sets out where the water is most likely getting in, with photos and recommendations.
Preparing for the visit
- Let us know about parking before the day
- For flats, make sure roof access has been agreed
- Keep pets out of the way during the survey
Arrange a survey
To get a price for roof leak investigations in Sipson, ring 07833 053749 or drop us an email. Some details about the property and the roof help us price the survey accurately.
Read more
What we cannot see
Our findings are based on what we can see safely on the day, so there are some things a survey can’t cover:
- Structural calculations (that’s a structural engineer’s job)
- An intermittent leak that shows no trace on the day
- Faults hidden behind ceilings or boarding
If in doubt, call 07833 053749 or use the contact form and we will suggest the right survey. What a survey covers and doesn’t.
What this survey covers
- Valleys and parapet gutters
- Rooflights and dormers
- Chimney stacks
- Flat roof details
- Lead flashings
- The roof space
- Slate and tile slopes