West Sussex · London and the South East
Roof leak investigation in Furnace Green, West Sussex
Roof leak investigations for homes and businesses in Furnace Green. More than 5,000 surveys completed across London and South East England.
- Staining around the chimney inside
- Damp underlay across a wide area
- Staining where a gutter or parapet meets the wall
Roof leak investigations for homes and businesses in Furnace Green
On older houses, leaks often start at lead work and hidden gutters. Worn lead, tired valley linings and blocked parapet outlets are frequent causes. If your home has a butterfly roof, the central valley gutter is a common culprit. We check parapets, valleys and flashings from each safe vantage point. Our report shows what we found, with photos. If you’ve noticed water marks that spread in wet weather and water coming in around a roof light or dormer, a survey will tell you what’s going on.
Around Furnace Green, chimneys on older homes are a common source of leaks, at the flashings, the pointing or the mortar round the pots. Damp in a chimney breast can have more than one cause, so it isn’t always obvious where it starts. The stack, its flashings and the loft space beside it are all worth checking.
The Standard Survey adds moisture detection, a structural check and a follow-up consultation. The Premium Survey goes further, with thermal imaging, drone inspection where it applies, structural analysis and an in-person consultation.
- Location
- Furnace Green (RH10)
- Wider area
- West Sussex
- Prices
- From £150 inc. VAT
- Reports
- Written, with photos, emailed to you
- Appointments
- Weekdays and weekends
- Insurance
- PI and public liability insurance
- Phone
- 07833 053749
- Updated
- 27 October 2026
How the survey changes by roof type
Chimney stacks
Our chimney check is a visual inspection of the stack, not a flue, gas or sweep inspection.
Slate and tile slopes
Ridge and hip tiles can loosen as their mortar cracks. Water then gets in along the top of the roof.
Furnace Green: your questions answered
Will you come out to Furnace Green?
Yes. Furnace Green is within the area we cover, which takes in towns, villages and rural addresses. We survey roofs across London and South East England. Just mention lanes, gates or anything else about the route when you book.
Are flat-roofed garages and porches in Furnace Green worth including?
It is frequently worth it, as these roofs are easy to forget. Cement sheet roofs on buildings from before 2000 may contain asbestos, so a specialist asbestos surveyor should check before they’re disturbed.
Do you look in the roof space?
If the survey needs it and the loft space can be reached safely, yes. Please clear anything stored under the hatch, and if the loft can’t be reached safely, the report says so.
Are you structural engineers?
No. Our survey is not a structural engineer’s report, and it doesn’t include calculations. We’ll recommend an engineer if we see signs that call for one.
Will you definitely find the leak?
We cannot promise to find every leak on one visit. Many leave clear signs, but intermittent leaks that need particular weather can be harder. The report sets out what we found and the most likely routes.
How should I prepare for the leak investigation?
Keep a note of when it leaks. Move stored items away from the loft hatch. Keep away from any light or socket that water is reaching.
Do I need to be at home?
Not necessarily. If we only need the outside, we can agree that beforehand, but the loft and any rooms with damp need someone to let us in.
What this survey cannot tell you
Before booking, it is worth knowing what a survey won’t do:
- Structural calculations (that’s a structural engineer’s job)
- Faults hidden behind ceilings or boarding
- Leaks that only appear in weather we can’t recreate
If in doubt, call 07833 053749 or drop us an email and we’ll recommend the right survey before booking. The full list of what we check.
Roofs we survey in Furnace Green
- Valleys and parapet gutters
- Lead flashings
- Rooflights and dormers
- Flat roof details
- Slate and tile slopes
- The roof space
- Chimney stacks
Useful tips for Furnace Green property owners
A little preparation and a few simple habits help. Some pointers:
- Do not climb onto the roof to look
- Write down the wind direction and rain when it leaks
- Keep water away from lights and sockets
- Let us know what has already been tried
If the leak turns out to be condensation, the report says so, and suggest how the roof space could be better ventilated. That avoids roof work that wouldn’t help.
After a downpour, look in the loft space with a torch, keeping to boarded areas. Look for drips, damp patches and stains on timbers. Take photos of anything that changes.
Wind, rain and roofs in Furnace Green
Many older homes in Sussex have handmade clay tiles and tile-hung walls. 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’s detailed. About 4.3 miles south lies Tyes Place, a reminder of how long the area around Furnace Green 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.
Take an older house close to St Andrew's Church: the leak may come from a chimney, a valley or tired lead rather than the covering itself. If you run a business near County Mall, a leak can close part of a shop or office, so finding the cause quickly matters. Take a building like Brook Infant School: tracing a leak on a big roof starts with where the water appears and works back.
Furnace Green is about 2 miles south-east of Crawley, in West Sussex. We survey roofs in Furnace Green and the rest of West Sussex, as part of our work across London and South East England. Across West Sussex, we cover Furnace Green.
We work across RH10 for roof leak investigations. Streets in the area include Marion Road, Holder Road and Bolton Road, all of which we cover. Nearby, we also carry out roof leak investigations in Pease Pottage (2 miles south-west), Worth Abbey (2 miles east), Balcombe Lane (2 miles south-east), Balcombe (3 miles south-east) and Staplefield (4 miles south). We also work in nearby towns such as Horsham (7 miles west), Haywards Heath (7 miles south), Burgess Hill (10 miles south), East Grinstead (7 miles east), Billingshurst (14 miles south-west) and Bewbush (3 miles west).
What’s near Furnace Green
In Furnace Green, that means homes and buildings near Oriel High School, The Charcoal Burner pub and Tilgate Park and the streets around them. Furnace Green’s nearest station is Three Bridges station, about 1.2 miles north of the centre. Nearby you will also find Crawley Museum (1.8 miles north-west) and Crawley Hospital (2 miles north-west). Not far away are Tilgate Lake.
What a survey costs
To price your survey, we look at:
- The height of the building and how the roof can be seen safely
- Any need for thermal images or a drone flight
- How many separate roofs there are, like extensions, dormers and garages
- Commercial roofs and larger buildings
Bigger, taller and commercial roofs take more time to survey, so the price reflects that. You will know the figure before booking.
What we need to know
These details help when you contact us:
- Where the property is, with the postcode
- Photos of the roof, taken safely from ground level or a window
- Your timetable, such as an exchange date
- How the loft is reached, if there is one
Getting a price is simple: just phone 07833 053749 or email us and give us some details about the property and we will explain which survey suits. We confirm the price before anything is booked.
Nearby places to Furnace Green
What else we do in Furnace Green
Why it’s worth a survey now in Furnace Green
Damp loft insulation loses much of its value. Insulation can soak up water quietly before anything shows below. The sooner the cause is found, the less needs replacing. Homes in smaller places like Furnace Green can face more weather, so a loose ridge or verge soon lets rain in. Each storm lifts it a little further, and water follows.
Every price we give includes VAT. Prices start from £150, including VAT. You will know the price for your survey before you book.
Why book us in Furnace Green
- Independent findings on the roof’s condition
- More than 20 years surveying roofs
- Plain-English reports with photos
- Weekday and weekend surveys
See what a roof survey costs and our case studies.
The survey, step by step
The visit has one job: to look at the leaking roof as closely as is safe and record what we find. Notes and photos go into the written report. The visit typically takes about 1–2 hours for most homes, though a hard-to-trace leak can take longer. Homes around Furnace Green often have gardens on more than one side, which gives us room to step back and see the roof. Mention any side of the property we cannot get to. The loft, where there’s safe access, completes the picture.
- You tell us where the water appears, when, and what the weather was doing.
- We examine the damp area and the rooms near it.
- From the roof space, we trace the water’s route where there’s safe access.
- We inspect the likely entry points outside, from ground level, windows and the roof where safe.
- We email a written report showing where the water most likely gets in.
Preparing for the visit
- If you are buying, let the agent know when we’re coming
- Tell us about parking before the day
- Agree roof access with the managing agent if it is shared
Booking a survey
To arrange a survey, call 07833 053749 or send us an email and tell us the address and what’s prompted the survey. You’ll know the price before anything is booked.