West Sussex · London and the South East
Electronic Leak Detection in Washington
Know where you stand with the flat roof membrane before you spend money on it. Electronic leak detection in Washington, with photographs and a clear written report.
- Stains far from any visible defect
- Damage from equipment installers
- Water coming in under a flat roof
Electronic leak detection for homes and businesses in Washington
Roofs covered with paving, ballast or planting need more thought. The layers on top can limit the methods we can use, and some may need lifting. We will discuss it with you when we quote. Any details of the build-up help, as they show what lies beneath the surface. If testing is not possible, we’ll say so. We survey commercial flat roofs, flat roof membranes and roof terraces and balconies, and people most frequently book us about failed seams and laps and leaks under green or ballasted roofs.
In a village or hamlet like Washington, flat roofs are usually on extensions, garages, outbuildings or barn conversions. They need the same care as any town roof: outlets, upstands, edges and the covering itself. The journey and access are planned beforehand. Garages and outbuildings are easy to forget, so mention any you want included when you book.
Nothing in the report is left vague: if work is needed, the report says so clearly.
- Location
- Washington (RH20)
- Wider area
- West Sussex
- Cost
- Quoted for your roof
- Report
- Emailed report with photos and recommendations
- Survey days
- Monday to Sunday, daytime
- Cover
- PI and public liability insurance
- Phone
- 07833 053749
- Updated
- 27 October 2026
What happens if roof problems are left?
Repairs in the wrong place leave the leak in place. Testing shows where the membrane is actually breached. Matching old materials, such as handmade tiles or stone slates, can take time to source. Spotting a problem early leaves room to find them.
For a price for your roof in Washington, call 07833 053749 or use the contact form with the address and a few details. We will confirm the figure before booking.
What you get with us
- Over 20 years’ experience
- Surveys on weekdays, Saturdays and Sundays
- Independent findings on the roof’s condition
- Over 5,000 surveys carried out
Take a look at our cost guide or our case studies.
Also near Washington
More services for Washington
Tips from our surveys
Over many surveys, some simple habits stand out:
- Act on new leaks promptly
- Have roof specifications to hand
- Ask contractors to protect the membrane
- Limit access to the roof
Wet insulation may need attention after a leak. That is something to discuss with your roofer, and moisture readings can help.
Act on leaks quickly. Water under a membrane can spread.
What a survey costs
When we price a survey, we consider:
- The number of roofs, including extensions and garages
- Height and safe access
- Features like valleys, chimneys, dormers and parapets
- Whether it’s a home or a commercial building
What a survey costs comes down to the roof itself: its size, its height, how many sections it has and how safely it can be seen. Electronic leak detection is quoted for your roof, because the method depends on the roof.
Booking your survey
Getting the details right at the start saves time. Please include:
- Any marks or damp showing indoors
- The style of property, from a terrace to a block
- Anything about access we should know
- Your postcode, so we can check access and travel
Our phone lines are open seven days a week, including Saturdays and Sundays. For a price or to book, phone 07833 053749 or use the contact form.
Common questions in Washington
Is Washington within the area you cover?
Yes, we do. We survey roofs across London and the South East, and smaller places are part of that. The journey is planned ahead, so it is useful to know about access.
Is Washington in the area you cover?
We do. Every survey there gets the same written report with photos, and visits run on weekdays and weekends.
How fast do I get the report?
Report times are set by the package. Basic: within 48 hours. Standard: 24 to 48 hours. Premium: the same day. If you have a deadline, such as an exchange date, tell us when booking.
Can you give me structural calculations?
No. Our survey isn’t a structural engineer’s report, and it does not include calculations. We’ll recommend an engineer if we see signs that call for one.
Do you survey roofs on blocks of flats?
Yes, once access has been agreed. Roofs over flats are frequently shared, so the freeholder or managing agent needs to agree access. We can only inspect what we are given access to.
Are you insured?
We are covered by professional indemnity and public liability insurance.
Can you find leaks on a covered flat roof?
On some roofs, yes. What sits on the membrane affects the method so we look at the roof first.
Honest limits
To be straight with you, a roof survey has limits:
- Leaks from walls, copings or rooflights
- Parts of the roof covered by fixed equipment
- Build-ups without a suitable layer below
If in doubt, ring 07833 053749 or drop us an email and we will recommend the right survey before booking. What our survey covers.
Roof types and parts we check
- Green roofs
- Flat roof membranes
- Roof terraces and balconies
- Liquid-applied waterproofing
- Commercial flat roofs
- Single-ply roofs
Do you need electronic leak detection in Washington?
Holes in a membrane often come from feet, tools or debris. Many are tiny but water still finds them.
People usually book a survey when they’ve noticed something like this:
- Leaks at pipes, outlets or fixings
- Water coming in under a flat roof
- Damp inside with no sign on the roof
- Damage from equipment installers
For site and facilities teams at buildings such as St Mary's CofE Primary School, schools and public buildings frequently have big flat roofs, and their outlets and upstands need regular checks.
Before booking any roof surveyor
- What follow-up you get after the report
- What’s outside the scope of the survey
- Whether any drone flown is registered with the CAA
- How much experience they have with roofs like yours
The survey, step by step
The visit has one job: to see as much of the flat roof membrane as can safely be seen and record it clearly. Everything we note and photograph goes into the written report. The visit usually takes more time on a big roof than a small one, and the build-up of the roof makes a difference too. In a hamlet or village like Washington, a postcode does not always lead to the right gate, so a few directions, or a note of a nearby landmark, help us arrive on time. After that, the survey runs as it would anywhere.
- You let us know about the roof and where water is showing.
- The roof is assessed for suitability first.
- We choose a low-voltage or high-voltage method to match the roof.
- The membrane is tested and breaches are found.
- A report with photographs shows where each breach is.
Preparing for the visit
- Make a note of anything you’d like us to look at
- Check we can get to the back of the property
- Keep pets in another room
Arrange a survey
To arrange a survey, phone 07833 053749 or send us an email and tell us the address and what’s prompted the survey. We’ll confirm the price before you book.
Advice
Local flat roofs in Washington
Handmade clay tiles and tile-hung upper walls are typical of older Sussex houses. Some old buildings in Sussex have Horsham stone slab roofs. Next to the main roofs there’s typically a flat roof somewhere, whether on an extension, a garage or a commercial unit. About 3.9 miles west lies Parham House, a reminder of how long the area around Washington has been built on. Older homes in the wider area often have features worth a closer look, such as lead valleys, tall stacks and roofs that have been patched over the years.
The streets around a church such as The Parish Church of St Mary are often among the oldest in a place, and if you own one of the older houses nearby, flat-roofed rear additions and dormers added over the years are worth checking.
Washington is about 6 miles north of Worthing, in West Sussex. Anywhere in Washington, we can come and survey your property. We cover towns and villages across West Sussex, from the larger towns to small villages. We also survey roofs in Brighton.
Postcode districts we cover here for electronic leak detection: RH20. We offer electronic leak detection to properties on London Road, The Street and Chanctonbury Close. If you’re just outside Washington, we cover Rock (1 mile north), Sullington (1 mile west), Heath Common (2 miles north-west), Storrington (2 miles north-west) and Warminghurst (2 miles north). We also work in nearby towns such as Horsham (12 miles north), Worthing (6 miles south), Bognor Regis (15 miles south-west), Haywards Heath (15 miles north-east), Burgess Hill (13 miles east) and Littlehampton (8 miles south-west).
Landmarks near Washington
Around Washington, our work takes us to homes and buildings near Rydon Community College, Windlesham House School and The Frankland Arms Public House. Other landmarks nearby include The Storrington And District Museum (2 miles north-west). Green spaces nearby include Chanctonbury Hill.