CLEARMASTERS
call-outs
4,000 psi
the cause
tankers
in drainage
Got a blocked drain right now?
Stop running water into it, keep children and pets away from any overflowing manhole, and call us. We’re available day and night, 365 days a year.
Our services
Blockage and jetting services
Drain unblocking
Fast clearance of blocked sinks, toilets, drains and manholes, day or night.
High-pressure jetting
Water at up to 4,000 psi to shift fat, silt, scale and debris, and clean the pipe walls.
Root cutting and descaling
Removing roots and hard scale from inside the pipe, without digging.
Sewer cleaning
Jetting and desilting larger drains and sewers on commercial and managed sites.
Jet/vac combination tankers
Jetting and vacuum in one vehicle, for big blockages, silt and flooding.
Our jetting vans
Built by us, carrying their own water and a camera, ready for any call-out.
How it works
How high-pressure jetting clears a drain
Most blockages are cleared by jetting. Here’s how it works.
Prevention
How to stop your drains blocking
Do
- Scrape plates into the bin and wipe greasy pans with kitchen roll
- Put wipes, nappies, cotton buds and sanitary products in the bin
- Use sink strainers to catch food and hair
- Keep gullies and grates clear of leaves
- Have problem drains checked with a camera
Don't
- Pour fat, oil or grease down the sink, even with hot water
- Flush ‘flushable’ wipes: they don’t break down like paper
- Rely on chemical drain cleaners for a blockage that keeps coming back
- Plant trees close to drains
- Ignore slow drains and gurgling
Why Clearmasters
Why choose Clearmasters?
With 34 years in drainage and a fleet of jetting vans and jet/vac tankers, we can clear anything from a blocked sink to a silted-up sewer, and fix whatever caused it.
If the same drain keeps blocking, we’ll usually survey it with a camera to find out why, then fix the cause, whether that’s root cutting, drain lining or replacing a collapsed section.
We do this work across Surrey, West Sussex, East Sussex, Kent, Hampshire and London, with tankers and engineers in each area most days.
Ask us a questionDay or night
We’re on call 24/7, 365 days a year, for blocked drains and flooding.
We find the cause
A camera check shows why it blocked, so it doesn’t keep happening.
We can fix it properly
Root cutting, lining and repairs by the same team, if the drain needs more than clearing.
The right kit for the job
Vans for quick domestic call-outs, tankers for the big jobs.
What our customers say
Checkatrade
From 134 reviews · Read them
From 63 reviews · Read them
Scores as of September 2026
Questions answered
Blocked drain FAQs
What causes drain blockages?
Most are caused by fat, oil and grease, wipes, sanitary products, food waste, silt, scale and tree roots. Damaged pipes, like cracks and displaced joints, make blockages more likely.
How does high-pressure jetting help?
It uses water at high pressure to break up the blockage and scour the pipe walls clean, then washes the debris away. No chemicals and no digging.
Do you offer emergency call-outs?
Yes, 24/7, 365 days a year. Call 03333 233566, or 03333 233577 out of hours.
Who is responsible for a blocked drain?
You’re usually responsible for drains that only serve your property and are within its boundary. Since October 2011, shared drains and the parts of your drain outside your boundary are usually your water company’s responsibility.
Why does my drain keep blocking?
Repeat blockages usually have a cause: roots, a damaged pipe, a displaced joint or a build-up of fat or scale. A camera survey will find it.
Got a different question? Call 03333 233566 or send us a message.
Related services
Fully accredited & compliant
We're independently vetted and certified so you can trust who you're letting onto your site.
SafeContractor
Health & safety pre-qualification accreditation, verifying our processes meet recognised safety standards.
RISQS
Railway Industry Supplier Qualification Scheme — approved to work safely within the rail industry supply chain.
Achilles UVDB
Utilities Vetting Database membership, confirming we meet the utilities sector's supply chain standards.
Trading Standards Approved
Vetted and approved under the local authority's trusted trader scheme for honesty and fair dealing.
NADC Member
Members of the National Association of Drainage Contractors, the UK trade body for the drainage industry.
Registered Waste Carrier
Registered with the Environment Agency, so your waste is handled and disposed of fully within the law.