247 Rapid Response
4.5 · 510 reviews
247 Rapid Response engineer on a leak detection callout in Horsham

Horsham · West Sussex · South East England

Leak detection in Horsham.

Thermal imaging, acoustic, tracer gas, fluorescent UV dye, salt-test damp analysis. Scheduled 1 to 2 working days, target on-site 9am to 5pm slot. Across Horsham, Billingshurst, Storrington, Pulborough and the wider Horsham.

Insurance-grade reportingBS-compliant workmanship12-month workmanship guarantee
30-60 MINResponse time
12 MOWorkmanship guarantee
FULLYInsured & accredited
24/7365 days a year

Local context

Leak detection in Horsham: what we expect on site.

Southern Water's hard supply at 280 to 310 ppm CaCO3 deposits limescale at joints and fittings across Horsham, and it is at those same points – where the pipe wall has been stressed by scale build-up and by the thermal cycling common in period properties – that pinhole leaks most often begin. In the older RH12 stock, a slow supply-pipe leak can travel considerable distances through original lime-mortar subfloors before it registers as a damp patch, making visual inspection alone unreliable.

Our leak-detection surveys combine three complementary methods. Thermal imaging identifies temperature differentials caused by water tracking behind walls or beneath floor finishes without any lifting or drilling. Acoustic correlation then pinpoints the noise signature of pressurised water escaping a pressurised supply, narrowing the likely defect to within centimetres along a run. Where the signal is ambiguous – common when pipes run under concrete slabs on rural RH14 properties – tracer gas is introduced into the system and detected at surface level to confirm the exact exit point. Every survey concludes with an insurance-grade written report stating the confirmed leak location, depth estimate, photographic evidence and our recommended repair scope. There is no callout fee; all visits are scheduled one to two working days ahead within a 9 am to 5 pm slot. See /pricing.

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Frequently asked

Leak detection in Horsham: your questions.

How fast can you reach Horsham for leak detection?
Scheduled 1 to 2 working days, target on-site 9am to 5pm slot. We do not run reactive 24/7 callouts in West Sussex unless the district is M25-adjacent (yours is not). Scheduled project visits are slot-booked from our north-west London base. Times quoted are best-effort targets, not contractual guarantees.
What does leak detection cost in Horsham?
Horsham leak detection survey from £449 for a 60 to 90 minute visit with written insurance-grade report (inc VAT for domestic). Any follow-on repair work charged at the hourly rate that applies at your zone and time of day, billed in 30-minute increments (see /pricing). Salt-test damp analysis from £125 per sample with 48-hour lab turnaround.
Do you cover all postcodes in Horsham?
Yes. We cover RH12, RH13, RH14 across Horsham, Billingshurst, Storrington, Pulborough and the rest of Horsham. Period stock around Horsham town centre with cast-iron soil stacks; rural properties on private soakaways.
What kit do you bring to Horsham for leak detection?
FLIR E76 (320×240 sensor) or FLIR E96 (640×480 sensor) thermal imaging camera (sensitive to <0.04°C), Sewerin Aquaphon A150 acoustic correlator with rod and ground microphone, 5% hydrogen / 95% nitrogen tracer gas safe mix (BS EN 14338-compliant), Spectroline OPX-365 UV dye inspection lamp, and Protimeter Surveymaster moisture mapping tool.
Will the report be accepted by my insurer in Horsham?
Yes. Our written leak detection reports are accepted by every major UK insurer for trace-and-access policy claims: LV, Aviva, Direct Line, Admiral, Hiscox, Zurich, AXA, RSA, NIG, Allianz, Ageas, Legal & General. Reports include location coordinates, leak rate or drainage condition estimate, photographic evidence, thermal image scans, and a recommended-repair section the customer can hand to any contractor.

Other South East services

Pair this with our other South East service.

We run both drainage and leak detection across Horsham. Drainage handles the unblock + survey + relining work; leak detection handles the forensic trace + insurance report side. Many customers book both on the same visit.

Need a 24/7 emergency engineer?

30 to 60 minute response across every London borough. Gas Safe registered. 12-month workmanship guarantee.