Southampton · London and the South East
Electronic leak detection in St Mary's, Southampton
Electronic leak detection to pinpoint holes in flat roof membranes in St Mary's. We’ve completed more than 5,000 surveys across London and the South East.
- New membranes needing a check before handover
- A flat roof leak that cannot be traced
- Punctures from foot traffic or tools
About our electronic leak detection in St Mary's
We carry out electronic leak detection on flat roofs in St Mary's and across London and South East England. A visit normally takes as long as needed for the membrane area and the build-up, which we’ll explain when we quote. We quote electronic leak detection for each roof, as the method and time depend on the roof. The results come in a written report with photos. Typical surveys look at new roofs to check before paving or planting and leaks showing away from the breach, across flat roof membranes, green roofs and liquid-applied waterproofing.
Flat roofs in smaller places like St Mary's can be more exposed, especially where nothing shelters them, so wind catches loose edges and trims. Sun on a flat roof also ages felt and bitumen. Splits, blisters and lifting edges are what to look out for, along with water that sits after rain. A flat roof that still holds water days after rain is also worth a closer look.
You can share the report with anyone who needs it: a seller or estate agent, an insurer, a roofer, a builder or a managing agent.
- Place
- St Mary's (SO14, SO15, SO18)
- Region
- Southampton
- Price
- Quoted for your roof
- Your report
- Emailed report with photos and recommendations
- Appointments
- Monday to Sunday, daytime
- Insured
- PI and public liability insurance
- Telephone
- 07833 053749
- Updated
- 27 October 2026
St Mary's questions
How do I find out if my home in St Mary's is listed?
Historic England’s list shows listed buildings, and the local council can tell you about conservation areas. If a home is listed, changes that affect its special interest need listed building consent, and in a conservation area re-roofing in different materials may need permission.
Does being near the coast affect roofs in St Mary's?
Near the coast, roofs face more wind and more salt than further inland. Salt corrodes metal fixings and flashings, and wind lifts loose slates, tiles and ridge pieces.
What does electronic leak detection do?
ELD passes a small electrical current across the roof to locate holes in the membrane. A breach lets the current through so we can pinpoint it.
What does the report include?
It works through the roof part by part, in writing and with photos, and ends with what we recommend. Points are put with the most urgent first where relevant.
Will you fly a drone over my roof?
Yes, where it is applicable. Flights depend on the weather on the day and airspace rules. We hold a CAA Flyer ID and Operator ID.
How soon will I get the report?
That depends on the survey you book: Basic within 48 hours, Standard in 24–48 hours and Premium the same day. Reports are sent by email.
How much time does ELD need?
The roof’s size and build-up decide how long it takes. You will know roughly how long before we start.
Landlords, agents and block managers in St Mary's
Surveys can also be booked by buyers’ agents acting for a client. The report is emailed, so it can go straight to your client.
Roof problems in a rented home affect tenants as well as the building. A survey helps you spot issues early and plan the work.
Prices for electronic leak detection in St Mary's
All our prices include VAT. What changes the price is:
- Any need for thermal images or a drone flight
- Extensions, dormers and garages with roofs of their own
- Features like valleys, chimneys, dormers and parapets
- The height of the building and how the roof can safely be seen
For a price for your roof in St Mary's, call 07833 053749 or use the contact form with the address and a few details. The price is agreed before a date is set.
What we need to know
If you can, have these to hand when you get in touch:
- Photos of the roof, taken safely from ground level or a window
- Where water is showing inside, if it is
- What’s prompted the survey
- Your postcode, so we can check access and travel
We confirm the price for your roof before booking, so you know where you stand. We quote electronic leak detection for each roof, as the method and time depend on the roof. For a price for your roof, phone 07833 053749 or use the contact form.
Before and after the survey
Over many surveys, some simple habits stand out as worth the effort:
- Test new membranes before covering them
- Avoid repeated repairs without finding the cause
- Don’t leave water getting in
- Do not let outlets block
After your roofer repairs the breaches, a retest can confirm them, where the roof still suits the method.
Consider testing a new membrane before it is covered. It is easier to find holes before more layers are added.
How it works
We look at the roof from outside and, where it is 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, as far as the space allows. The whole visit typically takes more time on a big roof than a small one, with the construction of the roof playing a part too. A visit to St Mary's is planned like any other: the time, the access and where to park are agreed in advance. Visits can be on weekdays, Saturdays or Sundays. If there are outbuildings or garages you want looked at, mention them.
- We ask about the roof, its age, its membrane and where leaks appear inside.
- We check that the membrane and build-up suit electronic leak detection.
- The method depends on the membrane and what sits above and below it.
- Testing runs across the roof to locate breaches in the membrane.
- The breaches are recorded with photographs in a report for your roofer.
Before we arrive
- Buyers: confirm access with the estate agent or seller
- Keep pets out of the way during the survey
- Have keys ready for side gates, garages or roof access doors
Arrange a survey
Our phone lines are open seven days a week, including Saturdays and Sundays. To book or ask a question, call 07833 053749 or send us an email.
Related advice
Places near St Mary's
Also in St Mary's
Leave it or get it looked at?
Repeated call-outs for the same leak add up. A clear record of where the breaches are helps break that cycle. On a bungalow or cottage around St Mary's, the roof sits close to the rooms below, so water can show inside quickly once it gets past the covering. Finding the cause first saves a second job inside.
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 book with us
- Weekday and weekend surveys
- Over 20 years’ experience
- Every finding written up with photos
- Satisfaction rate of 98%
Flat roofs in St Mary's
St Mary's is within about 1 mile of the coast, so there’s more wind and more salt in the air than further inland. Salt in the air is hard on metal flashings and fixings, and wind catches any loose edge on a flat roof. St Mary's has a number of hotels within about a mile and a half, and like offices and blocks, hotels often sit under flat roofs. For hotels and other commercial buildings, finding the cause of a flat roof leak quickly keeps rooms in use.
A roof leak in a hotel or guest house around St Mary's means lost rooms as well as repairs, so it’s worth knowing the roof’s condition. Take an older house close to St Mary's Church: later flat-roofed additions are common on older houses, and their edges and upstands frequently show the first signs of wear. Southampton Tudor House and Garden, about 0.6 miles south-west, is one of the historic houses in the wider area around St Mary's. On a period home nearby, any flat roof is likely to be a later addition with its own lifespan.
St Mary's is about 1 mile south of Southampton, in Southampton. St Mary's is part of the area we cover and the surrounding area across London and South East England. St Mary's is one of the towns and villages in Southampton where we work for electronic leak detection.
We cover every part of the SO14, SO15 and SO18 postcode area for electronic leak detection and the streets around it. Streets in the area include New Road, Ogle Road and Marsh Lane. Neighbouring places we cover for electronic leak detection include Northam (1 mile north-east), Inner Avenue (1 mile north), Peartree Green (1 mile east), Southampton (1 mile north) and Bitterne Manor (1 mile north-east). Within a short drive, we also cover Chartwell Green (3 miles north-east), Harefield (3 miles east), Maybush (3 miles north-west), Coxford (3 miles north-west), Lordswood (3 miles north-west) and Eling (4 miles west).
What’s near St Mary's
Around St Mary's, our work takes us to homes and buildings near The Joiners pub, Woolston School and Houndwell Park and the streets around them. St Mary's’s nearest station is Southampton Central station, roughly 0.8 miles west. Other landmarks nearby include Netley Castle (2.5 miles south-east) and Bargate Guildhall Museum (less than half a mile south-west). Open spaces near St Mary's include Netley Common.
Checking the roof from the ground
Fresh stains on ceilings or walls after rain are worth noting. Take a photo and write down when you saw it, as it helps a surveyor trace the cause.
A DIY look is useful, but it is not a survey. You won’t see flashings, valleys or the backs of chimneys properly from ground level.