Grange PlumbingWhat to do if you suspect a hidden leak
Damp patches on a ceiling, a meter that ticks over when nothing is running, or an unexplained jump in your water bill — all classic signs of a hidden leak. In Crawley the most common culprits are pinholes in old copper pipework, perished compression joints under floors, and supply-pipe leaks running between the meter and the house.
We use acoustic listening sticks, thermal imaging cameras and pressure testing to pinpoint the leak to within centimetres before anything is disturbed. That means a targeted repair instead of ripping up an entire floor or driveway.
If the leak turns out to be on the underground supply pipe, we can fix it in the same visit using moling — replacing the run without digging a trench across your garden or drive.
See our full leak detection serviceWhat's included
- Acoustic listening equipment for in-wall and under-floor leaks
- Thermal imaging to map hot/cold water runs
- Pressure testing and tracer gas where needed
- Underground supply pipe and driveway leaks
- Written report for your insurance trace-and-access claim
- Repairs handled in-house — including moling for buried pipes
Why Crawley homeowners call Grange Plumbing
Local to Crawley
Based nearby, we cover Crawley and the surrounding villages regularly.
Fully insured
Every job is fully insured with a written quote and clear invoice.
Fast response
Same-day or next-day visits for leaks and water-main problems.
What leak detection work in Crawley actually involves
Housing stock and why supply pipes fail in Crawley
Crawley's New Town neighbourhoods — Langley Green, Southgate, Northgate, West Green, Three Bridges and Tilgate — were built out from the late 1940s through the 1960s. That era of housing very commonly has galvanised iron or early polythene supply pipes, and they are now all reaching the end of their service life at roughly the same time. Symptoms are consistent: brown or metallic-tasting water first thing, a slow drop in pressure over several years, then a leak that shows as a permanently green strip across the lawn.
Ground conditions across RH10 & RH11
Crawley sits on Weald Clay over much of its area, with alluvial deposits along the Gatwick Stream. Clay excavates slowly but bores cleanly. Where properties back onto the stream corridor the ground can be waterlogged, which we allow for with pump-out on the pits rather than treating it as an extra.
Access, driveways and reinstatement
New Town estates typically have short front gardens with the meter close to the boundary, so runs are short and jobs are usually finished well inside a day. Verge and footway crossings are more common in Crawley than in the surrounding villages, and we handle the notification side of that for you.
Water supplier and postcodes we cover
Crawley and the surrounding West Sussex villages are supplied by Southern Water and SES Water (varies by neighbourhood), and the properties we work on are mainly in the RH10 & RH11 postcode area. Your water supplier is responsible for the main in the road and the communication pipe up to the boundary stop tap; the supply pipe from the boundary into your home is the homeowner's responsibility, and that is the section we replace, repair and leak-locate.
Streets and neighbourhoods we regularly work in around Crawley include Ifield, Langley Green, Southgate, Tilgate, Pound Hill, Maidenbower, Broadfield, Bewbush and Gossops Green. If you are just outside these, it is still worth calling — most of West Sussex is within our normal working radius and there is no charge for a quote.