West Sussex · London and the South East
Colworth Electronic Leak Detection
Electronic leak detection in Colworth, with over 20 years’ experience behind it. You get a clear report with photos.
- Holes around roof penetrations
- Waterproofing to test before it’s covered
- Punctures from foot traffic or tools
Electronic leak detection for homes and businesses in Colworth
Our ELD testing covers flat roofs in Colworth and the rest of London and South East England. Testing normally takes longer on a large roof than a small one, and the build-up of the roof makes a difference too. Every roof is quoted on its size and build-up. You get a written report with photos. We survey commercial flat roofs, liquid-applied waterproofing and single-ply roofs, and people most often book us about leaks through a covered membrane and holes left by work on the roof.
Flat roofs on exposed homes in small places like Colworth take more wind and rain, which is hard on edges, upstands and joins in the covering. Older felt roofs, frequently around 15–20 years in life, show it first. Rubber and GRP last longer, though trims and joints still need a look. Exposed edges are usually the first part of a flat roof to go.
What you get is a clear record of the flat roof membrane on the day we saw it. It’s useful straight away, and a good reference for later, such as when you want to compare after future work.
- Place
- Colworth (PO20)
- Region
- West Sussex
- Prices
- Quoted for your roof
- Reports
- A written report with photos, by email
- Survey days
- Monday to Sunday, daytime
- Insured
- Professional indemnity and public liability
- Phone
- 07833 053749
- Last updated
- 27 October 2026
Common roof problems in Colworth
Repeated leaks after repairs suggest the real breach hasn’t been found. Electronic testing helps pinpoint it.
Signs worth acting on include:
- Holes left by work on the roof
- New membranes needing a check before handover
- Stains far from any visible defect
- Patched roofs that still leak
For site and facilities teams at buildings like Bartons Primary School, ponding and blocked outlets on a wide flat roof are worth catching before the next wet season.
Choosing a roof surveyor
- Their report turnaround times
- How they’ll see the roof: from ground level, the loft, the roof or by drone
- What experience they bring
- If they fly a drone, whether they hold a CAA Flyer ID and Operator ID
The survey, step by step
The visit usually starts outside and finishes in the loft: first the slopes, edges and gutters from every safe viewpoint, then the roof space where it can be reached. All told, expect more time on a big roof than a small one, with the construction of the roof playing a part too. In a small place like Colworth, access is usually the main thing to plan. Mention any outbuildings, barns or garages you want included, and anything about the roof you already know. Weekday and weekend visits are available.
- You let us know about the roof and where water is showing.
- We check whether the membrane and build-up suit ELD.
- We choose a low-voltage or high-voltage method to match the roof.
- The membrane is tested and breaches are found.
- You get a report with photos of each breach.
Before we arrive
- Unlock side gates and any roof access doors
- If it is not your property yet, arrange access through the agent
- Show us where any leaks or stains appear
Book a survey
Photos help, if you have them. Take them safely from the ground or a window. To get started, call 07833 053749 or use the contact form.
Related advice
Colworth questions
Is my home in Colworth listed or in a conservation area?
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 the coastal weather around Colworth hard on roofs?
Places near the sea get more wind and more salt in the air than inland, and both are hard on roofs. Salt is hard on nails, clips and metal flashings, while strong wind lifts anything already loose.
Will I get photos?
Yes. The report includes photographs of what we found, so you can see exactly what each finding refers to.
How is ELD priced?
Electronic leak detection is quoted for your roof, because the method depends on the roof. Size, build-up and access all affect the price. To get a quote, phone 07833 053749 or send us an email.
Does ELD work under paving or planting?
It can be possible, depending on the roof. What sits on the membrane affects the method so we check the roof first.
Do you look in the loft space?
Yes, where the survey calls for it and there’s safe access. Inside, we look for damp, staining, gaps and sagging.
Does ELD include fixing the breach?
No. ELD is testing only. You get the breach locations with photos so your roofer can fix them.
What else we do in Colworth
How we price electronic leak detection
We confirm the exact price before booking. These are the things that affect it:
- The use of thermal imaging or a drone
- Extensions, dormers and garages with roofs of their own
- The roof’s overall size
- Features like valleys, chimneys, dormers and parapets
For a price for your roof in Colworth, phone 07833 053749 or drop us an email with the address and a few details. The price is agreed before a date is set.
Helping us price your survey
A little information up front helps. Please include:
- What kind of property and roof it is
- Your timetable, like an exchange date
- Where any leaks, stains or damp patches show inside
- What’s prompted the survey
Booking is simple: just ring 07833 053749 or send us an email and give us some details about the property and we’ll point you to the right survey. The price is agreed up front.
Flat and commercial roofs around Colworth
The coast is about 3 miles or less from Colworth, so there is more wind and more salt in the air than further inland. On a flat roof near the sea, edge trims and upstands take the brunt of the wind, and metal parts corrode faster. Many older homes in Sussex have handmade clay tiles and tile-hung walls. Some old buildings in Sussex have Horsham stone slab roofs. Mixed in with those pitched roofs are lots of flat ones, over rear extensions, dormers, garages and shops.
If you let a flat or house near Bognor Regis station, the flat roof over a let home is worth a look before it becomes a tenant complaint. Goodwood House lies about 4 miles north-west, so building around Colworth goes back a long way. On a period home nearby, any flat roof is likely to be a later addition with its own lifespan.
Colworth is about 2 miles north of Bognor Regis, in West Sussex. From houses to flats and shops in Colworth, the roof can be surveyed. Our area takes in places right across West Sussex, from the larger towns to small villages. You can also see our page for Portsmouth.
All of PO20 is covered for electronic leak detection, from the main roads to the quietest streets. Neighbouring places we cover for electronic leak detection include Merston (1 mile west), Oving (2 miles north-west), Lagness (2 miles south-west), Runcton (2 miles west) and Shopwyke (2 miles north-west). Further out, we also cover Worthing (13 miles east), Chichester (4 miles north-west), Selsey (7 miles south-west), Littlehampton (8 miles east), Emsworth (10 miles west) and Rustington (9 miles east).
Near you in Colworth
In Colworth, that means homes and buildings near The Regis School and The Brooks Local Nature Reserve and the streets around them. Colworth’s nearest station is Bognor Regis station, about 2.5 miles south-east of the centre. Nearby you’ll also find Bognor Regis Museum (2.7 miles south-east) and Tote Copse Castle (1.3 miles north-east).
Rented homes, blocks and businesses
Buyers’ agents can book surveys on behalf of their clients. Reports are emailed, so they’re easy to pass on.
An agent can book and manage the survey for a landlord, with the report sent to whoever needs it. Access is agreed with the tenant beforehand.
What we can’t see
In fairness, a roof survey has limits:
- Parts of the roof covered by fixed equipment
- Water entering through details rather than the membrane
- How wet the insulation is
If you are not sure which survey you need, phone 07833 053749 or drop us an email and we’ll give you a straight answer before you book. What our survey covers.
Roof types and parts we check
- Roof terraces and balconies
- Liquid-applied waterproofing
- Flat roof membranes
- Commercial flat roofs
- Green roofs
- Single-ply roofs
What happens if roof problems are left?
Patching where you think the leak is frequently misses it. Testing shows where the membrane is actually breached. Where a roof is exposed, as many are in small places like Colworth, driving rain gets into any weakness, and older walls, once damp, take a long time to dry.
Every price we give includes VAT. Electronic leak detection is quoted for your roof, because the method depends on the roof. We confirm the exact price before booking.
Why choose Independent Roof Survey in Colworth
- An independent look at the roof
- 5,000+ roofs surveyed
- A written report with photographs
- PI and public liability insurance
Take a look at our cost guide and what we found on two real jobs.