Engineers on call now 0330 1331 347
Diagnostics

Drain Odour Investigation

If it smells like drains, there's a reason. Let's find it.

Bad drain smells inside a property almost always trace back to a broken seal, a dry trap or a failed air-admittance valve. We use smoke testing, dye tracing and CCTV to isolate the source and put in a permanent fix — not just a masking spray.

Warning signs

  • Sewer smells in a specific room
  • Smells stronger when the boiler or extractor runs
  • Bad odour near a downstairs WC or utility

Common causes

  • Dry trap in an unused fixture
  • Failed air-admittance valve in the loft
  • Cracked soil stack in a wall cavity
  • Rat activity in a broken lateral
Our process

How we handle drain odour investigation

01
Symptom mapping
When, where and under what conditions the smell appears.
02
Smoke testing
Non-toxic smoke shows where air is escaping the drainage system.
03
Repair
AAV replaced, trap re-primed or cracked pipe repaired.

Kit we bring

  • Smoke test kits
  • AAV replacement stock
  • Endoscope cameras

While you wait — do

  • Run water through unused fixtures monthly to refill traps

Please don't

  • Don't mask the smell — you're delaying a real repair

Common questions

Can rats cause drain smells?
Yes — rats break into drainage from disused lateral connections and can carry smells with them into wall cavities.

Why people trust us with drain odour investigation

5.0 from 10 Google reviews
Read every review on Google
Family-owned, not a call centre

You speak to the people who turn up. No franchise, no handover.

24/7, 365 days a year

Nights, weekends and bank holidays — the phone is answered by us.

Based in East Grinstead

Local engineers covering within a 20-mile radius of East Grinstead.

Drain interior before and after clearing by DrainFixer
Before and after — same drain, same visit
DrainFixer engineer using high-pressure water jetting on a blocked drain
High-pressure jetting on site
CCTV drain survey camera footage reviewed on a DrainFixer monitor
CCTV survey footage you get to see
DrainFixer van in blue and yellow livery on a job
Fully stocked van, 24/7

Blocked drain? Not for long.

Speak to a real engineer in under 20 seconds. 24/7, 365 days a year.

Call 24/70330 1331 347
Call 0330 1331 347