Hampshire · London and the South East
Electronic Leak Detection in Alton
Electronic leak detection to pinpoint holes in flat roof membranes in Alton, carried out by an experienced roof surveyor. Every survey comes with a written report and photos.
- Leaks at pipes, outlets or fixings
- Leaks under green or ballasted roofs
- Leaks that return after repairs
What we look for on each type of roof
Green and ballasted roofs
Green roofs and ballasted roofs cover the waterproofing. Testing may still be possible, depending on the build-up.
Bituminous membranes
Bituminous felt and modified bitumen membranes are common. The build-up decides which method will work.
Electronic leak detection in Alton: what you get
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 talk this through before we quote. Any details of the build-up help because they show what’s under the surface. We’ll tell you if the roof cannot be tested. Typical surveys look at breaches around outlets and penetrations and new membranes needing a check before handover, on commercial flat roofs, single-ply roofs and roof terraces and balconies.
Shops, surgeries, schools and small business units in towns like Alton often have flat roofs. Out of sight, they tend to be forgotten until a leak appears, and by then the insulation underneath may be wet. A survey, or electronic testing where the membrane suits it, shows what’s going on. Tell us who manages the building so access to the roof can be arranged.
The report records the flat roof membrane as we found it on the day. That makes it useful now and a handy reference later, for instance when you want to check whether anything has changed.
- Where
- Alton (GU34)
- Wider area
- Hampshire
- Prices
- Quoted for your roof
- Report
- Written, with photos, emailed to you
- Survey days
- Weekdays, Saturdays and Sundays
- Insurance
- PI and public liability insurance
- Call
- 07833 053749
- Page updated
- 27 October 2026
What we do, step by step
We’ll ask a few questions first, about the roof’s history, any leaks and past repairs. Then the inspection itself takes a length of time set by the membrane area and the build-up, and we’ll give you a guide when quoting. A typical visit in Alton begins with the street side of the roof and then moves round the building. Rear gardens and side paths frequently give the best view of extensions and back slopes. Then, if it can be reached safely, we look in the loft.
- We start with what you know about the roof and the leak.
- We check whether the membrane and build-up suit ELD.
- The test method is chosen to suit the roof.
- We test the roof and locate any breaches.
- You get a report with photos of each breach.
Preparing for the visit
- Leave a clear route to the loft
- Leave side gates unlocked
- Make a note of anything you’d like us to look at
Getting a price
Most bookings start with a short call: phone 07833 053749 or drop us an email and we’ll ask a few questions about the roof. You will have a price before anything is arranged.
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Honest limits
No survey can tell you everything, and we’d rather be clear about that before you book. Keep these in mind:
- Roofs whose membrane or build-up isn’t suitable
- Areas we cannot reach or that can’t be tested
- Leaks from plumbing or windows
If you’re not sure which survey you need, phone 07833 053749 or email us and we’ll give you a straight answer before you book. What our survey covers.
Roofs we survey in Alton
- Liquid-applied waterproofing
- Single-ply roofs
- Roof terraces and balconies
- Flat roof membranes
- Green roofs
- Commercial flat roofs
Useful tips for Alton property owners
You do not need to be a roofer to help. What helps most:
- Stay off the flat roof unless needed
- Keep outlets clear of debris
- Get leaks traced quickly
- Keep a note of leaks after rain
If water has been getting in, insulation under the membrane may be wet. Your roofer can advise on that, and moisture readings can help.
Keep people off the flat roof unless they need to be there. Many breaches come from foot traffic.
Local flat roofs in Alton
Historic houses like Bentworth Hall, about 3.2 miles west, show how far back building in the area around Alton goes. If yours is one of the older homes, expect a mix of original materials and later repairs on the roof, and any change of roofing material on a listed home needs checking with the council first. Within a mile and a half or so of Alton there are several hotels. If you look after one, a leak through a flat roof can put a room out of use.
If your house is among the older ones in the streets near Church of St Lawrence, later flat-roofed additions are common on older houses, and their edges and upstands often show the first signs of wear. If you run a hotel or guest house in or near Alton, a roof problem can mean rooms out of use, so it pays to find faults before guests do. Landlords with a home close to Alton station may find that flat roofs on let property tend to be checked only when they fail, which is the costly way round.
Alton is about 10 miles south-east of Basingstoke, in Hampshire. In Alton, as across Hampshire, every roof gets the same careful survey. Alton is one of the places in Hampshire where we work. Guildford is in our area too.
All of GU34 is within our area for electronic leak detection. If you need electronic leak detection at a property on High Street, Station Road and Goswell Square or a nearby road, we can help. Being close to the A339 and B3004, Alton is easy for us to reach. Neighbouring places we cover for electronic leak detection include Chawton (1 mile south-west), Holybourne (2 miles north-east), Neatham (2 miles north-east), East Worldham (2 miles south-east) and Golden Pot (2 miles north). Further out, we also cover Basingstoke (10 miles north-west), Farnborough (13 miles north-east), Fleet (10 miles north-east), Aldershot (11 miles north-east), Petersfield (10 miles south) and Yateley (14 miles north-east).
Around Alton
Around Alton, our work takes us to homes and buildings near Amery Hill School, Treloar School and The 'Baker's Arms' Public House, among other places. Alton has its own railway station: Alton station. Well-known places in the area include Allen Gallery (under half a mile east) and Alton Community Hospital (0.9 miles south-west). For a walk, there is Holybourne Hill.
Should I look at the roof myself first?
After heavy rain, check ceilings and the tops of walls for new stains. Take a photo and write down when you saw it, which helps when we check the roof.
Your own check is a good start, but it isn’t a survey. You won’t see flashings, valleys or the backs of chimneys properly from ground level, and those are details a survey looks at closely.
What happens if roof problems are left?
Water trapped under a membrane can soak insulation and decking. Locating it early helps limit the damage. On homes in Alton, the joint between an extension and the house is where a slow leak tends to start. Left for a few seasons, it can spoil plaster, skirting and flooring inside.
Bigger, taller and commercial roofs take more time to survey, so the price reflects that. You’ll know the figure before booking.
Why book with us
- PI and public liability insurance
- CAA-registered drone operator (Flyer ID and Operator ID)
- More than 5,000 surveys completed
- Photos and a written report every time
Questions from Alton
Do you carry out roof surveys in Alton?
We do. Every survey there gets the same written report with photographs.
Is my home in Alton listed or in a conservation area?
We cannot confirm that for you, but Historic England’s list and your council can. A change of roofing material may need consent in either case.
What if it rains on the day?
A survey can usually go ahead in light rain. Heavy rain or strong wind can ground a drone and make the roof unsafe, so we’ll agree a new date if the weather is not suitable.
Does someone need to be in?
That depends on the survey. Inside the building and in the loft, we need someone to let us in.
Do you use drones?
Where it helps and the rules allow, yes. Our sub-250g drone is flown by a CAA-registered operator with a Flyer ID and Operator ID, and every flight depends on the airspace and the weather.
Does electronic leak detection work on all membranes?
That depends on the roof’s membrane and layers. Share any details you have and we will check whether ELD will work.
Will you repair the leak?
No, the test finds the breaches and your roofer repairs them. The report gives your roofer the locations.