What to Do When You Have a Blocked Drain

September 1, 2025

We're around 24/7 because blocked drains don't care if it's Christmas morning

Person in yellow gloves using orange plunger on a white sink.

Right, so your drain's blocked. Brilliant. Nothing quite ruins your day like standing there watching dirty water refuse to go anywhere, is there?


We've been unblocking drains around Essex, Kent and London for years now, and I promise you - this happens to everyone. 


Last month alone, we had three separate calls from people convinced their entire drainage system had collapsed. Turned out to be hair clogs and potato peelings.

Have a Quick Look Around First


Before you start panicking, just check what's actually going on. Is it one drain being difficult, or have you got problems everywhere?


One drain? Usually something simple. Multiple drains backing up at once? That's when things get interesting, and not in a good way.

Start With the Obvious Stuff


Put some rubber gloves on and pull out whatever you can see. I know it's grim, but you'd be shocked how often this actually works.


We arrived at one job where the customer had spent £50 on drain cleaners.


Took us thirty seconds to pull out a massive clump of hair and hey presto - problem solved.

Try the Old Hot Water Trick


This one's been around forever, and it works more often than you'd think. Boil your kettle, squirt some washing-up liquid down the drain, then pour the hot water after it.


Give it ten minutes, then see if your tap drains properly. Sorts out greasy blockages a treat.

Get the Plunger Out


If hot water doesn't work, time for some elbow grease. Make sure you're using the right plunger though - those cup ones for sinks, the other type for toilets.


Don't go mad with it. We've seen people get so carried away that they've cracked their ceramic sinks. Steady rhythm, good seal around the drain, and a bit of patience.

A person pouring boiling water into a sink, then using a plunger to unclog it.

Those Chemical Things From the Shop


Look, we’re not going to tell you not to use them, but we’re not a fan and advise you not too. They're pretty aggressive stuff, and we've seen them cause more problems than they solve, especially in older properties.


If you do use them, read the instructions properly and make sure there's plenty of air in the room. And whatever you do, don't mix different products. That's how people end up in hospital.

When to Admit Defeat


Sometimes you just can't sort it yourself. If you've tried everything and it's still not working, or if you're getting sewage coming back up through floor drains, that's when you need someone with a proper kit.


We've got cameras that go right down into your drains to see what's what, and high-pressure jets that can shift pretty much anything.


What takes you hours of messing about, we can usually sort in no time.

two vans with CDS logo on the side

Stop It Happening Again


Once it's flowing properly, keep it that way. Don't tip cooking fat down the sink - let it go solid in the pan and scrape it in a bin.



Those little drain guards are worth getting. A couple of pounds from any hardware shop, and they catch all the hair and bits before they cause trouble.


Monthly hot water flush keeps things moving nicely. Like an MOT for your drains.


Give Us a Shout If You Need Help


If you're anywhere in Essex, Kent, or London and your drain's being a pain, just call us. We've seen every type of blockage going - nothing surprises us anymore.


We're around 24/7 because blocked drains don't care if it's Christmas morning. No call-out charge either, and we'll usually know what we're dealing with pretty quickly.


Don't let it turn into a bigger problem. Ring us on 01268 527335 and we'll get it sorted.



Geoff Ward Director of Commercial Drainage Services Essex CDS Ltd

Geoff Ward


If you have a question about this or any of our blogs, or services then please do not hesitate to get in touch. 

We will always try and answer your question quickly and professionally. 

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