Leak Detection in Merton

Leak detection across Merton covers SW19, SW20, CR4 and SM4, taking in Wimbledon, Mitcham, Morden, Colliers Wood, Raynes Park, Wimbledon Park and Merton Park. Edwardian villas in Wimbledon Village sit alongside 1930s semis across Raynes Park and Morden, Victorian terraces in Colliers Wood, and ex-council stock in Mitcham. Thames Water and SES Water both supply hard mains, and Wimbledon Village conservation rules constrain visible work on period stock.

Wimbledon Village conservation work is treated as period-appropriate from first contact: no cut-and-shut visible patches, no exposed plastic on finished walls. The survey starts with a Protimeter Surveymaster and Tramex pinless moisture map, then the FLIR E96 thermal camera (640x480 sensor, less than 0.04 degrees C differential) follows heating-circuit flow under solid floors. Pressure-decay testing across isolated sections of the primary circuit narrows the failure before any of the original boards are opened.

SW20 family-house heating spec brings cylinder-loop and primary-circuit work to the centre of the brief. The Sewerin Aquaphon A150 acoustic kit (rod microphone on the cylinder primary, ground microphone on screed) picks up underfloor and concrete-slab leaks. Hydrophone work on hot-water cylinders and loft cold-water tanks rules out vessel failure before any pipework is opened. Sodium fluorescein and Rhodamine WT under a Spectroline OPX-365 UV lamp separates above-floor plumbing from waste-pipe failures on shower trays and bath wastes.

For underground supply leaks across Raynes Park and Morden front gardens, the 5% hydrogen / 95% nitrogen tracer gas mix (BS EN 14338 compliant) is the standard tool. Damp surveys in basement and lower-ground flats close with a salt-test analysis (30 minutes on-site, 48-hour lab turnaround) for nitrate, chloride or neutral salts. Every investigation generates an insurance-grade trace-and-access report accepted by LV, Aviva, Direct Line, Admiral, Hiscox, Zurich, AXA, RSA, NIG, Allianz, Ageas and Legal & General. Survey from a fixed starting fee, repair work at the outer-London half-hour rate.