Independent Bristol drainage engineers · Checkatrade approved

Open daily · 0117 427 4565

Blocked drains in Bristol, cleared the same day

We can usually be with you today. We agree a fixed price on arrival before any work starts, and there’s no call-out fee — so if you’d rather not go ahead once you’ve heard the price, there’s nothing to pay and we leave.

Tell us your postcode and what the drain is doing. That’s usually all we need.

The short answers

Standard clearance

£120 no VAT to pay

Call-out fee

£0

Typical arrival

2 to 4 hours

Evenings & weekends

Same price

If the fault returns

12-month call-back

We won’t quote firmly over the phone for a job we haven’t seen — but we’ll tell you what’s likely.

Same-day response

Most Bristol call-outs attended today

Public liability insured

Certificate available on request

Flow tested on site

We prove it's clear before we leave

Local and independent

Bristol-based, not a national chain

The usual suspects

What's actually blocking it

Five things cause almost every blockage we attend in Bristol. Which one you’re dealing with changes what it takes to fix — and whether it comes back.

Fat, oil and grease

Poured down warm, it cools and hardens on the pipe wall, building in layers until the bore narrows enough to catch everything else. The commonest cause in kitchens — and by far the commonest in cafés and restaurants.

Wipes and sanitary items

So-called flushable wipes don't break down like paper. They catch on a rough joint or a root and then collect everything that passes. The commonest cause of a blocked toilet.

Tree roots

Roots find pipe joints looking for moisture, then grow. Bristol's Victorian stock — Redland, Cotham, Bishopston, Clifton — is jointed clay, and mature street trees make this common. Cutting back buys time; a displaced joint needs repairing.

Silt, scale and debris

Gradual build-up, especially in older cast-iron and clay runs and in gullies that collect leaves and grit. High-pressure jetting restores the full bore rather than punching a channel through it.

Cracks and collapses

A cracked, displaced or collapsed section, or a length laid at the wrong gradient. Nothing clears permanently until it's repaired — which is exactly what a CCTV survey is for.

Not sure which?

That's normal, and working it out is our job. Describe what you're seeing on the phone and we'll tell you what it's likely to be before we set off. Call 0117 427 4565.

From the camera

What it actually looks like down there

Stills from CCTV surveys on Bristol properties. If your drain keeps blocking, this is the kind of thing we find — and why another clearance wouldn’t have fixed it.

CCTV still showing tree root ingress through a clay pipe joint in Bristol

Tree roots

Through a clay joint.

CCTV still showing fat and grease build-up narrowing a drain in Bristol

Fat and grease

Narrowed bore, commercial kitchen

CCTV still showing a cracked and displaced drain pipe section in Bristol

Structural fault

Displaced joint, needs repair

Every survey we run produces footage you keep. More about CCTV drain surveys.

Work it out yourself

Is the blockage inside or outside?

Lift the cover on the inspection chamber nearest the house. What you see tells you where the fault is.

1

Chamber is empty

The blockage is between the house and that chamber — internal pipework or the soil pipe.

2

Chamber is full

The blockage is downstream of it, somewhere in the underground run — and everything indoors is backing up behind it.

If you’d rather not lift covers, the pattern of symptoms tells us most of what we need over the phone. One slow fixture is usually internal. Several fixtures, or an overflowing outside drain, is nearly always the main run.

Google rating for Flow Sure Drains, 5.0 stars from 126 reviews

Before you pay anyone

Is it your drain or Wessex Water's?

It depends on what the pipe serves, not where the problem shows up.

If the drain serves only your property and the blockage is within your boundary, it’s usually yours. If several homes feed into the same run, or your neighbours have problems at the same time, it’s likely a shared lateral drain — and in this area that’s normally Wessex Water’s responsibility rather than yours.

The quick rule: if more than one property is affected at once, it is rarely a private drain.

We’ll tell you which it is before charging you for anything, including if you should be calling Wessex Water instead of us. Road gullies and highway flooding are different again — those are reported to Bristol City Council.

What’s affected

Usually whose responsibility

Pipes inside your home

You — the property owner

Drain serving only your property, within your boundary

You — the property owner

Shared drain serving two or more properties

Wessex Water (lateral drain)

Public sewer in the road

Wessex Water

Road gully or highway flooding

Bristol City Council

General guidance for the Bristol area. Check with Wessex Water or Bristol City Council for your specific situation — or call us and we’ll tell you what we think you’re dealing with.

On the day

What happens when we arrive

The same four stages every time, in this order. If we can’t complete stage four, the job isn’t finished.

1

Locate

We find where the restriction actually is before anything gets pushed further down the pipe.

Before pricing

2

Price

One fixed figure, said out loud before we start. If you’d rather not go ahead, there’s nothing to pay.

Your decision

3

Clear

Mechanical clearance first — rods or an electro-mechanical machine — then jetting where the blockage needs it.

Removed, not moved

4

Prove

Flow tested while we’re still there. If there’s any doubt about why it happened, we put a camera down it and show you.

12-month call-back

1

You call us

Tell us your postcode and what’s happening. We’ll say honestly whether it sounds like today or later in the week.

Two minutes

2

We find the problem

On site we work out where the blockage actually is, before anything gets pushed further down the pipe.

Before any work

3

We agree the price

One fixed figure, told to you before we start. If you’d rather not go ahead, there’s nothing to pay.

Your decision

4

We clear and prove it

Cleared and flow tested while we’re still there, then we explain what caused it and how to stop it happening again.

[12-month] call-back
Blocked drain chamber standing full of water in Bristol before clearance

On arrival — chamber standing full

The same Bristol drain chamber running clear after high-pressure jetting

Before we left — cleared and flow tested

What Bristol customers say

Reviews left on Google by people whose drains we’ve actually cleared.

Posted on Google Google
Becky Frape profile picture
Becky Frape
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Very straight forward, no hidden costs, very friendly and super helpful. Highly recommend!
Posted on Google Google
Chris Renty profile picture
Chris Renty
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Tony at Flow Shure is fast to act on a drain issue and came to my support to fix a problem not just once but a second time at no extra expense 6 months later at short notice. He has provided the best service I've ever had from a tradesmen.
Posted on Google Google
Helen profile picture
Helen
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
This is the second time SureFlow have come to my rescue, as ever, quick, efficient - gets the job done, what more do you need?!
Posted on Google Google
Adam Rider profile picture
Adam Rider
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Great service and quickly got our slow draining shower sorted - thank you 👍
Posted on Google Google
Janet Adams profile picture
Janet Adams
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Antony was very prompt, efficient, and friendly. The problem was sorted very quickly.
Posted on Google Google
VICKI whittal profile picture
VICKI whittal
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Attended on time and solved the drainage issue promptly
Posted on Google Google
Laura Chapman profile picture
Laura Chapman
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Responsive, timely and clear communication throughout. Quick appointment and efficiently sorted the problem. Would use again and would recommend.
Posted on Google Google
Katherine Lau profile picture
Katherine Lau
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
Quick service and professional.
Posted on Google Google
Birsen Oskay profile picture
Birsen Oskay
Google star 1Google star 2Google star 3Google star 4Google star 5Trustindex verifies that the original source of the review is Google.
We reached a solution very quickly. It was a professional job; thank you. I recommend it to everyone.

No surprises

What it costs

Most complaints about drainage companies come down to the same thing: nobody said what it would cost until the work was already done. We do it the other way round.

FROM

£120 no VAT to pay

Standard drain clearance at a domestic property

We won’t quote a firm figure over the phone for a job we haven’t seen — but we’ll tell you what’s likely and what would push it higher.

Right now

What to do while you're waiting

Four things that make a real difference between us taking the call and us arriving.

Stop using water

Taps, toilets, the dishwasher and the washing machine. Anything you send down has nowhere to go and adds to what comes back up.

Don't flush again to test it

If the bowl is already high, a second flush is what turns a blockage into a bathroom floor you have to clean.

Don't pour chemicals down

They rarely clear a real blockage, can damage older pipework, and make the job more hazardous for whoever opens it up. If you already have, please tell us.

Keep people away from it

If there’s dirty water on the floor or standing outside, keep children and pets clear until it’s cleared and the area disinfected.

Coverage

Blocked drains by area

Each area page covers what we actually find in that part of the city — the property stock, the pipework and the problems that come with them. Drains don’t follow postcode boundaries and neither do we, so if you’re just outside this list, call anyway.

Flow Sure Drains jetting equipment and camera reel loaded in the company van

Our own jetting and CCTV equipment — nothing subcontracted.

Straight answers

Common questions about blocked drains

How much does it cost to unblock a drain in Bristol?

A standard domestic clearance works to a fixed price agreed on site, typically from £120. There’s no call-out fee and no extra charge for evenings, weekends or bank holidays.

We won’t quote a firm figure over the phone for a job we haven’t seen — but we’ll tell you what’s likely and what would push it higher.

Usually, yes. Same-day attendance is most of what we do across Bristol and Bath. You’ll be given a realistic arrival window when you call — [2 to 4 hours] in most cases — and if we’re running behind you’ll hear from us.

It depends on what the pipe serves. If it serves only your property and the blockage is within your boundary, it’s usually yours. If several homes share the run, or neighbours are affected at the same time, it’s likely a shared lateral drain and normally Wessex Water’s responsibility.

If more than one property is affected at once, it is rarely a private drain. Road gullies and highway flooding are reported to Bristol City Council.

No. We come and look at no charge, and if you decide not to go ahead once you’ve heard the price, there’s nothing to pay and we leave.

Because the previous blockage was moved rather than removed, or because something is still in the pipe catching debris — a fat line, tree roots through a joint, a cracked or collapsed section, or a pipe laid at the wrong gradient.

If it’s happened more than twice in the same place, another clearance only treats the symptom. A CCTV survey finds the actual cause.

Rarely, on a genuine blockage. They may shift a light build-up near a plughole but won’t clear wipes, roots, silt or a broken pipe, and they can damage older pipework.

If you’ve already used one, please tell us when we arrive — it changes how we approach the job safely.

Yes. Blocked inspection chambers, gullies and outside drains are everyday work for us, domestic and commercial.

A gully holding water after rain is usually silt and leaf debris and clears easily. A chamber standing full is different — that means the blockage is downstream, and everything in the property is backing up behind it.

Yes — pubs, cafés, restaurants, shops, offices, HMOs and managed flats. Kitchen grease lines and shared runs in converted buildings are two of the most common problems we’re called to in Bristol.

For premises that can’t afford to close, planned maintenance works out considerably cheaper than emergency call-outs.

Next steps

If clearing it isn't enough

CCTV drain surveys

When a blockage keeps returning, a camera shows what's actually down there. You keep the footage and a plain-English report.

Drain jetting & cleaning

High-pressure water cuts through fat, silt and scale to restore the full bore of the pipe, not just a channel through the middle of the blockage.

Drain repairs & relining

Cracked, displaced or root-damaged pipes repaired from the inside wherever possible, so the garden stays where it is.

Tell us the postcode and what it's doing

We’ll tell you what you’re likely dealing with and when we can be there. No call-out fee, and a fixed price agreed before any work starts.