Hampshire · London and the South East
Knapp Electronic Leak Detection
Get a clear view of the flat roof membrane at a property in Knapp. Visits run on weekdays and weekends, in the daytime.
- Gaps at membrane joints
- Punctures from foot traffic or tools
- Leaks through a flat roof with no obvious cause
Surveys for landlords and agents in Knapp
Landlords and agents in Knapp book surveys as well as householders. The report gives you a dated record of the flat roof membrane, with photos, useful for planning maintenance.
Buyers’ agents can book surveys on behalf of their clients. Reports are emailed, so they’re easy to pass on.
About our electronic leak detection in Knapp
Green roofs, ballasted roofs and roofs under paving are harder to test. What sits on the membrane can affect which method will work, and some may need lifting. We talk this through before 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, liquid-applied waterproofing and roof terraces and balconies, and people most frequently book us about leaks through a covered membrane and breaches around outlets and penetrations.
Some older homes in villages like Knapp 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. Knowing the roof’s condition is the starting point. Listed building consent is needed for changes that affect a listed building’s special interest.
Most points in the report come with a picture, because a photo of a cracked flashing says more than a paragraph. If something couldn’t be seen safely, the report is clear about it.
- Place
- Knapp (SO51)
- Region
- Hampshire
- Cost
- Quoted for your roof
- Your report
- Emailed report with photos and recommendations
- When we survey
- Weekdays and weekends
- Insurance
- PI and public liability insurance
- Phone
- 07833 053749
- Page updated
- 27 October 2026
Checking the roof from the ground
It helps to keep a record: when leaks happen, ground-level photos and any past roof work. Send it with your enquiry, as it helps us focus the survey.
After heavy rain, check ceilings and the tops of walls for new stains. Photograph them and note the date, which helps when we look at the roof.
Nearby places to Knapp
Other services in Knapp
Knapp: your questions answered
Is Knapp within the area you cover?
Yes, we do. Our area covers London and the South East, and smaller places are part of that. The journey is planned ahead, so it’s useful to know about access.
Do you cover Knapp?
Yes, Knapp is one of the places we work. Every survey there gets the same written report with photographs, and visits run on weekdays and weekends.
What happens after the survey?
You receive the written report by email, with photographs and recommendations. You can use it to talk to a seller, an insurer, a roofer or a managing agent, whichever applies.
Do you carry out surveys on Saturdays and Sundays?
Visits run seven days a week in the daytime, which suits people who work during the week. Just say which days work for you.
Do you survey roofs on blocks of flats?
Yes, once whoever controls the roof agrees access. On a shared roof we can only inspect the parts we are allowed to reach.
Do you look in the loft space?
If there’s a loft and safe access to it, yes. From inside, the underside of the roof often shows damp, staining or daylight that cannot be seen from outside.
Can you survey in bad weather?
Some surveys depend on the weather more than others. Drone flights need calm, dry weather, and thermal imaging works best with a dry roof, little wind and a sunny day beforehand. If the conditions are not right, we will talk to you about another date.
What we do, step by step
The visit typically starts outside and finishes in the loft: outside views come first, then the roof space if there is safe access. All told, expect more time on a big roof than a small one, with the construction of the roof playing a part too. Older roofs in small places like Knapp can have low, tight loft spaces, so it helps to know whether there is a loft hatch and how easy it is to reach. We only go where it is safe.
- 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.
Getting ready for the survey
- Show us where any leaks or stains appear
- Keep pets out of the way during the survey
- Mention any parking restrictions on your street
How to book
For a price for electronic leak detection in Knapp, call 07833 053749 or send us an email. Some details about the property and the roof help us price the survey accurately.
Advice
How the survey changes by roof type
Single-ply membranes
Many offices and units have single-ply roofs. Laps and fixings are where holes often appear.
Inverted and paved roofs
We will tell you if your inverted or paved roof is not suitable.
Flat and commercial roofs around Knapp
A number of Hampshire villages keep thatched roofs on their older buildings. Across the South East, older homes tend to have slate or clay tiles, and many later ones concrete tiles. Flat roofs fill the gaps in between, on extensions, garages, dormers and business premises. An older home may be listed, or stand in a conservation area. To find out, check Historic England’s list and ask the council about conservation areas. Re-roofing in different materials may need permission there.
If you own a rental within reach of Chandlers Ford station, flat roofs over rear additions and dormers in rented property are worth checking between tenancies. The streets around a church such as Church of St Mark are frequently among the oldest in a place, and if your house is among the older ones nearby, flat-roofed rear additions and dormers added over the years are worth checking.
Knapp is about 2 miles north-west of Chandler's Ford, in Hampshire. If you are in Knapp, booking works exactly as it does anywhere else: get in touch, agree the price and pick a day. We cover towns and villages across Hampshire, large and small. We also survey roofs in Southampton.
Electronic leak detection in SO51 are booked the same way as anywhere else. Other places close to Knapp include Ampfield (1 mile south-west), Broadgate (1 mile south-east), Gosport (1 mile south-west), Lower Slackstead (1 mile north-west) and Crampmoor (2 miles south-west). Within a short drive, we also cover Winchester (6 miles north-east), Eastleigh (5 miles south-east), Fareham (15 miles south-east), Andover (14 miles north), Totton (7 miles south-west) and Hedge End (8 miles south-east).
Local landmarks in Knapp
In Knapp, that means homes and buildings near White Horse Public House. For rail, the closest station is Chandlers Ford station, roughly 2.5 miles south-east. Well-known places in the area include Romsey Community Hospital (2.9 miles south-west) and King Johns House (3.7 miles south-west). Not far away are Emer Bog and Baddesley Common.
Common roof problems in Knapp
Water travels under flat roof membranes. The leak may show some distance from where water gets in, so tracing it by eye is difficult.
Signs worth acting on include:
- Gaps at membrane joints
- Patched roofs that still leak
- Leaks at pipes, outlets or fixings
- Waterproofing to test before it’s covered
Anyone responsible for a site like Ampfield Church of England Primary School will know that large flat roofs, common on schools and other public buildings, need their outlets, upstands and coverings checked regularly.
Before booking any roof surveyor
- Which limits apply to the survey
- Whether any drone flown is registered with the CAA
- Whether they hold professional indemnity and public liability insurance
- Whether VAT is in the quoted price
How we price electronic leak detection
We confirm the price for your survey before you book. These are the things that affect it:
- Building height and the viewpoints available
- Any need for thermal images or a drone flight
- The number of roofs, including extensions and garages
- Roof area
For a price for your roof in Knapp, call 07833 053749 or send us an email with the address and some details. We’ll confirm the figure before booking.
What we need to know
These details help when you get in touch:
- Where water is showing inside, if it is
- What’s prompted the survey
- Whether there is a loft hatch, a shared roof or tricky access
- Pictures from the garden or a window, if you have them
Photos help, if you have them. Take them safely from ground level or a window. To send them or to book, phone 07833 053749 or send us an email.