247 Rapid Response
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Nitrogen tracer-gas regulator and gauges set up next to a bathroom sink during a leak-detection callout

Leak detection

Salt-test damp analysis across London

Specialist salt-test damp analysis as part of our 24/7 leak detection service. Same fixed pricing, same 30 to 60 minute target response, same 12-month guarantee.

30 to 60 min target response12-month guaranteeGas Safe Registered
30-60 MINResponse time
12 MOWorkmanship guarantee
FULLYInsured & accredited
24/7365 days a year

Lab analysis of damp samples to distinguish rising damp from condensation or penetrating damp. Insurance-grade written report.

What we sample, what we test

Small core samples taken at the affected wall and a control sample from an unaffected wall. Lab tests for chloride, nitrate and sulphate concentrations (the salts that ride with capillary moisture). Results plus an interpreted opinion on rising vs penetrating vs condensation root cause.

When salt analysis matters

Insurer has rejected a damp claim

Lab evidence often re-opens the claim. Subjective surveys alone get rejected; lab data doesn't.

Conflict between two surveyors

An independent salt analysis cuts through the disagreement.

Building work has worsened damp

Establishes whether the new work created the damp or just exposed it.

Pre-purchase due diligence

Written report you can cite during negotiation.

What it costs (indicative)

Fixed price per sample tested. Includes the on-site sampling, lab fees, and the written report. Full pricing.

When to call us

  • ✔ You've had a damp survey but suspect the diagnosis is wrong.
  • ✔ An insurance damp claim has been rejected.
  • ✔ You're a buyer or seller in a damp-disputed transaction.
  • ✔ Building work has revealed damp and you need to know whose responsibility it is.

Need a 24/7 emergency engineer?

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

FAQ

Salt-test damp analysis: your questions

How fast can you reach me for salt-test damp analysis?
Typical on-site time is 30 to 60 minutes across the M25, subject to engineer availability and traffic. Live dispatch, never queued. Times quoted are best-effort targets, not contractual guarantees.
What does salt-test damp analysis typically cost?
Labour is one flat rate across London and the M25, billed per 30 minutes: from £75 / 30 min (daytime) up to £147 / 30 min (nighttime), with a one-hour minimum then 30-minute increments. There is no callout fee. Domestic prices shown inc VAT, no hidden extras. Fixed-price conversion available on most jobs after diagnosis. Full rate card.
Is the work guaranteed?
Yes. Salt-test damp analysis carries the same 12-month workmanship guarantee as every other leak detection job we do.
Are you Gas Safe registered?
Yes. Gas Safe Register number 972173. Verifiable live at gassaferegister.co.uk before our engineer walks in.

Need salt-test damp analysis now?

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