West Sussex · London and the South East
Roof Leak Investigation in Warnham
A careful look at the leaking roof at your property in Warnham, with photographs and a written report.
- Ceiling stains that grow after rain
- Condensation that looks like a leak
- Damp patches next to the stack
Roof leak investigation in Warnham
On older houses, leaks frequently start at lead work and hidden gutters. Lead flashings crack or lift, valley linings wear and parapet gutters overflow when outlets block. A central valley gutter on a butterfly roof often turns out to be the source. Parapet walls and their gutters are looked at from wherever it is safe. Our report shows what we found, with photos. If you’re worried about condensation that looks like a leak and wet patches on loft insulation, we can find out what’s behind it.
Many homes in small places like Warnham face open ground, where storms hit ridges, verges and chimneys hardest. Damp in old stone, brick or timber walls is slow to dry out, which makes finding the cause quickly worthwhile. A record with photos is useful if you need to show the damage to anyone else.
You can share the report with anyone who needs it: your solicitor, the seller, your insurer, a roofer or the building’s managing agent, whichever applies.
- Location
- Warnham (RH12)
- Wider area
- West Sussex
- Prices
- From £150 inc. VAT
- Your report
- Emailed report with photos and recommendations
- Appointments
- Monday to Sunday, daytime
- Insured
- PI and public liability insurance
- Call
- 07833 053749
- Last updated
- 27 October 2026
Do you need a roof leak investigation in Warnham?
Slipped or missing slates and tiles let rain reach the underlay. Ageing felt underlay eventually tears and lets water through, and very old roofs may have no underlay at all. On slate roofs, slipping is frequently caused by corroded nails.
Look out for signs like these:
- Drips in the loft during heavy rain
- Damp underlay across a wide area
- Staining where a gutter or parapet meets the wall
- Staining around the chimney inside
Trees in and around Warnham Park shed leaves that can end up in nearby gutters, and blocked gutters overflow and soak walls.
Questions to ask before you book
- What the report includes, and whether it has photos
- Whether you can ask questions once you have the report
- How long they’ve been surveying roofs
- What’s outside the scope of the survey
Questions from Warnham
How do I find out if my home in Warnham 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.
Do you cover smaller places like Warnham?
Yes, we do. Our area covers London and the South East, and smaller places are part of that. Longer journeys are simply planned beforehand.
Do you take photos of the roof?
Yes, plenty. Pictures sit next to the findings they show.
Can thermal imaging help find my roof leak?
It can, when the conditions are right. It works best after a sunny day, with a dry roof surface and little wind. Wet insulation holds heat longer than dry, which can show up on the image. We always check what it shows with moisture readings.
What happens after the survey?
The report comes by email, and what you do next is up to you: raise it with a seller, send it to an insurer, brief a roofer or share it with a managing agent.
How long does a roof leak investigation take?
On site, it normally takes about 1–2 hours, more where the leak is intermittent or the roof is large. Report times depend on the package.
Do you carry professional indemnity insurance?
Our surveys are covered by professional indemnity and public liability insurance. If you need details for a managing agent or a building owner, just ask.
Nearby places to Warnham
Other services in Warnham
The survey, step by step
We look at the roof from outside and, where it’s relevant and there is safe access, from inside the roof space too. In the loft, the signs we look for are staining, damp, daylight and sagging. The whole visit usually takes between one and two hours, more where the leak is intermittent or the roof is large. Around Warnham, older homes can have small or awkward roof spaces, so it’s useful to know whether there’s a loft hatch and how easy it is to reach. Only areas that can be reached safely are inspected.
- You tell us where the water shows and when it appears.
- Inside, we check the damp area and the roof space above it.
- Outside, we look at every likely route in.
- Moisture readings and thermal imaging are used where they help.
- We email a report with photos, the likely entry point and recommendations.
Before the survey
- Unlock side gates and any roof access doors
- Make a note of anything you’d like us to look at
- Buyers: confirm access with the estate agent or seller
Getting a price
To get a price for roof leak investigations in Warnham, phone 07833 053749 or use the contact form. Some details about the property and the roof help us give you an accurate price.
Related advice
Landlord and commercial surveys in Warnham
For blocks of flats, a roof survey helps managing agents and residents’ management companies plan ahead. The report sets out what needs attention now and what can wait, which helps when budgeting.
Buyers’ agents can book surveys on behalf of their clients. Reports are emailed, so they’re easy to pass on.
Wind, rain and roofs in Warnham
Before planning roof work on an older home, find out whether it is listed or in a conservation area. Listed building consent covers changes to a listed building’s special interest, and an Article 4 direction can bring extra controls in a conservation area. Handmade clay tiles and tile-hung upper walls are typical of older Sussex houses. Horsham stone slab roofs survive on some old Sussex buildings. Where water gets in depends a good deal on what the roof is made of and how it is detailed.
If you own a rental within reach of Warnham station, a clear finding on where water gets in helps you brief a roofer straight away. Take a building like Warnham CofE Primary School: tracing a leak on a big roof starts with where the water appears and works back.
Warnham is about 2 miles north-west of Horsham, in West Sussex. Warnham is part of the area we cover as part of our work across London and South East England. We cover towns and villages across West Sussex, large and small. We also survey roofs in Crawley.
Postcode districts we cover here for roof leak investigations: RH12. You will find streets such as Hollands Way, Stanford Orchard and Gardeners Close. If you’re just outside Warnham, we cover Broadbridge Heath (2 miles south), Holbrook (2 miles east), Horsham (2 miles south-east), Rowhook (2 miles west) and Tower Hill (2 miles south). We also work in nearby towns like Crawley (7 miles east), Haywards Heath (13 miles south-east), Burgess Hill (13 miles south-east), East Grinstead (15 miles east), Broadfield (6 miles east) and Storrington (12 miles south).
Near you in Warnham
In Warnham, that means homes and buildings near Warnham Park, The Greets Inn and Greenway Academy and the streets around them. The closest station to Warnham is Warnham station, roughly 1 mile east of the centre. A little further out are Horsham Hospital (1.8 miles south-east) and Christs Hospital School Museum (3.2 miles south). Not far away are Warnham LNR and Vann Lake.
Roof by roof
Parapet and box gutters
Parapet and box gutters sit behind walls or inside the roof. A blocked outlet sends water over the lining and into the building.
Chimney stacks
Damp on a chimney breast inside frequently starts at the top of the stack. Open, unused pots let rain fall down the flue.
DIY checks: what’s safe
Inside, the loft is a good place to look, with care. Use a torch and stay on the joists or boards, and look for staining, damp timber or daylight coming through.
A DIY look is useful, but it isn’t a survey. From the ground, valleys, flashings and the backs of chimneys are frequently out of sight.
Leave it or get it looked at?
A leak rarely stays small. Wet timbers start to decay, plaster softens and insulation stops working. Finding the source early keeps the damage down. Around Warnham, older homes often have old roof timbers, and water through a failed covering can rot timber if it’s left.
There are three survey packages: Basic from £150, Standard from £250 and Premium from £400, all inc. VAT. The price for your roof depends on its size, access and what you want to find out.
Why book us in Warnham
- Independent findings on the roof’s condition
- CAA-registered drone operator (Flyer ID and Operator ID)
- Every finding written up with photos
- 98% of clients satisfied