Greater London · London and the South East
Roof Leak Investigation in Wennington
Independent roof leak investigations in Wennington. We have completed more than 5,000 surveys across London and South East England.
- Water through the ceiling under a flat roof
- Damp on a chimney breast
- Brown rings on upstairs ceilings
Rented homes, blocks and businesses
Managing agents and residents’ management companies use roof surveys to plan maintenance. Recommendations are set out in order of urgency where relevant.
Shared roofs need a little more planning: access has to be agreed with whoever owns or manages the building. Tell us about it when you book and we will plan the survey around it.
About our roof leak investigation in Wennington
Older homes have more places for water to get in. Lead flashings crack or lift, valley linings wear and parapet gutters overflow when outlets block. If your home has a butterfly roof, the central valley gutter is a common culprit. Parapet walls and their gutters are checked from wherever it’s safe. Our report shows what we found, with photos. If you are worried about damp patches next to the stack and leaks that appear only in driving rain, we can find out what’s behind it, whatever the roof.
London’s Victorian and Edwardian roofs have often been repaired many times. Telling wear from a one-off event matters, because insurers typically exclude wear and tear. That is as true in Wennington as anywhere in London. Photographs and a written account give you something specific to show an insurer, a landlord or a roofer.
The report works through the roof section by section, from the main slopes down to the gutters and outlets. You’ll see the good as well as the bad.
- Where
- Wennington (RM13)
- Wider area
- Greater London
- Price
- From £150 inc. VAT
- Report
- A written report with photos, by email
- When we survey
- Weekdays and weekends
- Insurance
- PI and public liability insurance
- Telephone
- 07833 053749
- Updated
- 27 October 2026
Do you need a roof leak investigation in Wennington?
Flat roofs fail with age and wear. Felt frequently lasts around 15 to 20 years, and as it ages it splits, blisters and opens at the laps. Leaks often start at the edges, upstands and outlets.
Signs worth acting on include:
- Leaks below a flat extension roof
- Water marks that spread in wet weather
- Staining around the chimney inside
- Staining where a gutter or parapet meets the wall
Take a building like Brady Primary School: on a building that size, finding the source of a drip means looking well beyond the stain.
Choosing a roof surveyor
- Whether the inside of the roof is included
- Which limits apply to the survey
- Which viewpoints they use to see the roof
- Do they have a CAA Flyer ID and Operator ID for drone work?
What a roof leak investigation looks like in Wennington
Outer London has plenty of Victorian and Edwardian terraces with slate roofs, but also a great many interwar semis, frequently with hipped roofs in clay or concrete tiles. Bay roofs, hip ridges and dormers from later loft conversions are the details that set these houses apart. Knowing the roof type helps narrow down where water may be getting in. About 1.5 miles north-west lies Rainham Hall, a reminder of how long the area around Wennington has been built on. Period homes nearby can have lead valleys, tall chimneys and a patchwork of past repairs, and any change of roofing material on a listed home needs checking with the council first.
If you live in an older home near St Mary and St Peter's Church, old mortar, worn lead and slipped slates are the usual suspects when water gets in. Homes near green spaces like Wildspace Conservation Park can get more leaves in their gutters in autumn, and blocked gutters overflow and soak walls.
Wennington is about 4 miles south of Hornchurch, in Greater London. We carry out roof leak investigations for householders, landlords and businesses in Wennington. Wennington is one of the places in Greater London where we work. Our London page covers surveys nearby.
Postcode districts we cover here for roof leak investigations: RM13. We also cover the places around Wennington: Aveley (1 mile east), Hacton (2 miles north), South Ockendon (3 miles east), Upminster Bridge (4 miles north) and Hornchurch (4 miles north). Larger places within reach include London (14 miles west), St Pancras (15 miles west), Shoreditch (13 miles west), Walthamstow (12 miles north-west), Hoxton (13 miles west) and Whitechapel (12 miles west).
What’s near Wennington
In Wennington, that means homes and buildings near Lennard Arms Inn, Wildspace Conservation Park and Harris Academy Rainham. For rail, the closest station is Rainham (Essex) station, roughly 1.4 miles north-west of the centre. Well-known places in the area include St George's Hospital (2.8 miles north) and Erith Museum (2.5 miles south-west). Open spaces near Wennington include Rainham Marshes Nature Reserve.
DIY checks: what’s safe
Watch the gutters in a downpour, from a window or the ground. Water spilling over the edge can point to a blockage or a sagging run.
It’s useful to keep a record: when leaks happen, ground-level photos and any past roof work. Share it with us when booking and it will help the survey.
What this survey can’t tell you
It’s a careful look at the leaking roof, not the whole story. The main limits are:
- Structural calculations (that’s a structural engineer’s job)
- The repair itself (the investigation finds and reports the cause)
- An intermittent leak that shows no trace on the day
If you are not sure which survey you need, ring 07833 053749 or email us and we will give you a straight answer. The full list of what we check.
Roofs we survey in Wennington
- Lead flashings
- The roof space
- Flat roof details
- Slate and tile slopes
- Chimney stacks
- Valleys and parapet gutters
- Rooflights and dormers
Also near Wennington
What else we do in Wennington
Roof by roof
Slate and tile slopes
On slate roofs, corroded nails let slates slip. Even a single gap can let water in, especially in driving rain.
Valleys
Valleys collect water from two roof slopes. Worn or split linings and slipped valley tiles let it under the coverings.
How it works
It helps to start with what’s prompted the survey: a purchase, a leak, a storm, new work or simply peace of mind. That way we can focus on what matters to you. Most visits take about one to two hours for most homes, though a hard-to-trace leak can take longer. London terraces rarely offer a view of the whole roof from one spot, so in Wennington we work round the house, using the street, the windows, the loft and any safe vantage point behind it. If other people live in the building, let us know who can let us into the shared parts.
- You let us know where the water appears, when, and what the weather was doing.
- We examine the damp area and the rooms near it.
- From the loft space, we trace the water’s route where there is safe access.
- We inspect the likely entry points outside, from the ground, windows and the roof where safe.
- We email a written report showing where the water most likely gets in.
Preparing for the visit
- Find any records of previous roof work
- Let us know about parking before the day
- Move anything stored under the loft hatch
Book a survey
If you have photos of the roof, send them over. Take them safely from ground level or a window. To get started, ring 07833 053749 or use the contact form.
Read more
FAQs for Wennington
Does a conservation area affect roof work in Wennington?
Your council is the best source, with Historic England’s list for listed buildings. Both listing and conservation areas can limit changes of roofing material.
Can parking be tricky for a visit in Wennington?
It depends on the street. If Wennington has controlled parking where you are, a visitor permit is the easiest answer.
Is it the same as a RICS Level 2 or Level 3 survey?
No. Our survey looks at the roof, not the whole building. For the rest of the building, a RICS home survey is a separate job.
Do you work in Wennington?
Yes. Our area covers London and South East England, and that includes Wennington.
What does a roof survey cost?
Our price is from £150, including VAT. What you pay for your roof depends on its size, height, access and the package, confirmed before anything is booked.
Why is not the leak directly above the stain?
Because water travels. It can follow a timber or the underlay a long way first, so the entry point is often well away from the mark. That is why we trace the route rather than patching above the stain.
Is it a leak or condensation?
Condensation can look very like a leak. Widespread damp on the underside of the roof in cold weather, with blocked vents, suggests condensation. We check the pattern, take moisture readings and tell you which is more likely.