Hampshire · London and the South East
Electronic leak detection in Blacknest, Hampshire
Need electronic leak detection in Blacknest? We can help, with findings in writing and pictures to back them up. Book a weekday or weekend visit.
- New roofs to check before paving or planting
- Leaking laps in the waterproofing
- Punctures from foot traffic or tools
Tips that help
A few practical points come up again and again on our surveys. They’re worth knowing whatever the roof:
- Keep outlets clear of debris
- Use boards when working on the roof
- Stay off the flat roof unless needed
- Check new waterproofing before handover
After your roofer repairs the breaches, a retest can confirm them, where the roof still suits the method.
Act on leaks quickly. Water under a membrane can spread.
Electronic leak detection in Blacknest
We carry out electronic leak detection on flat roofs in Blacknest and across London and the South East. Testing normally takes longer on a large roof than a small one, with the construction of the roof playing a part too. Electronic leak detection is quoted for your roof, because the method depends on the roof. You get a report with photographs. We survey liquid-applied waterproofing, green roofs and commercial flat roofs, and people most often book us about new roofs to check before paving or planting and breaches hidden under paving or planting.
Some older homes in villages like Blacknest are listed or in a conservation area, and that can affect how an extension roof or dormer is re-covered. Check with the council before planning any change of material. Finding out what state the roof is in gives you the facts to plan with. Listed building consent is needed for changes that affect a listed building’s special interest.
Where we cannot see part of the flat roof membrane, the report says so. You will know exactly what was inspected and what wasn’t, and what we’d suggest next.
- Place
- Blacknest (GU34)
- Wider area
- Hampshire
- Prices
- Quoted for your roof
- Your report
- Written, with photos, emailed to you
- When we survey
- Weekdays and weekends
- Cover
- Professional indemnity and public liability
- Phone
- 07833 053749
- Updated
- 27 October 2026
Also near Blacknest
More services for Blacknest
The survey, step by step
On the day, we begin with a quick chat about the roof and anything that’s worrying you. We then inspect everything that can be seen safely, using the ground, windows, the loft and a drone where it applies. Most surveys take a length of time set by the membrane area and the build-up, which we set out in the quote. Cottages and farmhouses around Blacknest often have roofs at several levels, with lean-tos and outbuildings attached. We work round each section in turn, from the safest viewpoints.
- We start with what you know about the roof and the leak.
- The roof is assessed for suitability first.
- We choose a low-voltage or high-voltage method to match the roof.
- We test the roof and locate any breaches.
- A report with photos shows where each breach is.
How to prepare
- Check the loft hatch can be reached
- Jot down any questions you want answered
- Let us know about parking before the day
How to book
Booking is simple: just ring 07833 053749 or email us and give us some details about the property and we will recommend the right survey. We confirm the price before anything is booked.
Related advice
Different roofs, different checks
Single-ply membranes
ELD often works on single-ply membranes but it depends on the product and layers.
EPDM rubber roofs
ELD on EPDM depends on the product and the layers. We check before we quote.
Blacknest questions
Do you cover Blacknest?
We do. The survey and report are the same in Blacknest as anywhere else.
Will you come out to Blacknest?
Yes, smaller places are covered as well as towns. We cover the whole of London and South East England. Just mention lanes, gates or anything else about the route when booking.
Are you structural engineers?
No. We point out what can be seen, such as sagging or deflection, but we’re not structural engineers and don’t carry out calculations. If we think you need an engineer, the report says so.
Does someone need to be in?
If the survey includes the loft or the inside of the building, someone needs to let us in. We will talk about access when booking.
Is the repair part of the test?
No, our part is finding the breaches. Your roofer uses the report to target the repair.
How experienced are you?
Over 20 years and more than 5,000 surveys, across London and South East England.
Does the report include photos?
Yes. We photograph the roof as we go, and they go into the written report alongside our recommendations.
Common roof problems in Blacknest
Water travels under flat roof membranes. The stain inside can be far from the hole, so tracing it by eye is difficult.
A survey can pick up problems like:
- New membranes needing a check before handover
- Punctures from foot traffic or tools
- Leaks under green or ballasted roofs
- Breaches around outlets and penetrations
If you let a flat or house near Bentley (Hampshire) station, flat roofs on let property tend to be checked only when they fail, which is the costly way round.
Choosing a roof surveyor
- Their track record with similar roofs
- Whether VAT is added on top
- How they plan to inspect the roof safely
- What’s outside the scope of the survey
DIY checks: what’s safe
After heavy rain, check ceilings and the tops of walls for new stains. Photograph them and note the date.
Watch the gutters in a downpour, from a window or the ground. Water spilling over the edge can point to a blockage or a sagging run.
What a survey costs
The price reflects the time and kit the roof needs. The main factors are:
- The use of thermal imaging or a drone
- Features like valleys, chimneys, dormers and parapets
- Roof area
- Building height and the viewpoints available
Every price we give includes VAT. Electronic leak detection is quoted for your roof, because the method depends on the roof. We confirm the price for the job before booking.
Booking your survey
These details help when you get in touch:
- What kind of property and roof it is
- Where water is showing inside, if it is
- How the loft is reached, if there is one
- Why you want a survey: buying, a leak, a storm or new work
To get a price for electronic leak detection in Blacknest, phone 07833 053749 or use the contact form. The address, the type of property and what you’d like to know help us give you an accurate price.
What electronic leak detection looks like in Blacknest
Some Hampshire villages still have thatched roofs. Slate and clay tile are the usual coverings on older South East houses, with concrete tiles on many later estates. Mixed in with those pitched roofs are lots of flat ones, over rear extensions, dormers, garages and shops. The wider area around Blacknest has a long history of building, with Farnham Castle about 4.1 miles north-east. On older houses around here, roofs often carry the marks of earlier repairs, from replaced slates to new lead, and a listed home or one in a conservation area may need consent for changes of material.
Blacknest is about 4 miles south-west of Farnham, in Hampshire. We visit Blacknest as part of our work across Hampshire, for homes and businesses alike. Across Hampshire, we cover Blacknest. You can also see our page for Guildford.
Surveys in GU34 work the same way as everywhere else we cover. We also cover the places around Blacknest: Bucks Horn Oak (1 mile east), Isington (1 mile west), Bentley (1 mile north-west), Binsted (1 mile south-west) and Frithend (1 mile south-east). Within a short drive, we also cover Basingstoke (12 miles north-west), Farnborough (9 miles north-east), Fleet (7 miles north), Aldershot (7 miles north-east), Alton (5 miles west) and Petersfield (12 miles south).
Landmarks near Blacknest
In Blacknest, that means homes and buildings near The Jolly Farmer pub, among other places. The nearest railway station is Bentley (Hampshire) station, about 0.5 miles north of the centre. Well-known places in the area include Chase Community Hospital (4.7 miles south) and Barley Pound (2.7 miles north). The countryside around Blacknest includes Holybourne Hill and Farnham Heath.