Quick answer: Have a go yourself first if the trouble is in one fitting, close to the plughole, and you have not already emptied a bottle of chemical down there. A plunger, a hand snake and a cleaned-out trap will sort most single-sink and single-toilet blockages for the price of a coffee. Call someone when more than one fitting is affected, when it keeps coming back, when the outside gully or manhole is full, or when you have run out of ideas after half an hour. At that point the blockage is in the shared run underground and no amount of pouring or plunging reaches it. For 24/7 clearance across Brighton, Hove and the rest of Sussex, ring Danny on 07459 599505.
What you can genuinely fix yourself
Plenty of blockages never need a van on the drive, and I would rather you saved your money on the ones you can beat.
A slow bathroom basin is nearly always hair and soap knotted in the trap, the U-bend under the sink. Put a bucket underneath, unscrew the trap by hand, pull the mess out, rinse it, screw it back. Ten minutes and you are done. A kitchen sink that has slowed over months is usually fat and grease coating the pipe, and a kettle of hot water with a good squirt of washing up liquid, worked in a few rounds, will shift a lot of it before it sets hard.
A plunger earns its keep on toilets and sinks when the blockage is close. The trick most people miss is sealing the overflow first, a wet cloth stuffed in the little slot near the top of a basin, so the pressure goes down the pipe instead of hissing out the side. A hand snake, the coiled wire kind you buy for a few pounds, will reach a bit further and grab what a plunger only pushes.
None of that needs me. If the water is moving again and stays moving for a week, you have fixed it properly.
Where DIY quietly stops working
The tools above all share the same ceiling. They only reach the first metre or so, and they only work on one fitting at a time.
Once the blockage sits in the pipe that several fittings share, out under the path or the garden, you are pouring hot water at a problem it will never touch. You can plunge a sink for an hour and the obstruction two rooms away downstream does not care. This is the moment DIY turns from thrifty to a waste of an afternoon, and the honest tell is simple: if the sink drains but the outside gully is still brimming, the job was never in the sink.
Recurring blockages fall in the same bucket. If you clear the same drain three times in a month, you are not clearing it. You are making a temporary hole through a build-up that closes again in days. There is a fuller version of this in our piece on the signs you need professional drain unblocking.
What the professional actually brings
The obvious answer is better kit, and that is part of it, but it is not the whole difference.
A high-pressure jetting hose does something no household tool can. Instead of punching a channel through a fat blockage, it strips the deposit off the full circle of the pipe wall and flushes it out towards the sewer, so the run goes back to its proper bore rather than a pinhole through the middle. Proper drain rods, screwed and locked correctly, go a long way underground without coming apart, which the cheap sets in the shed cannot promise.
The bigger difference is knowing where to attack the thing. Half of a real job is working out which chamber to open and which direction the trouble lies, so the clearance happens at the right access point rather than blind from the plughole. That diagnosis is the part experience buys you, and it is why a job that has beaten a homeowner for a fortnight can be a twenty minute visit with the right cover lifted.
The bit nobody likes: cost
DIY looks free, and for the small stuff it nearly is. A plunger is a few pounds, a hand snake not much more, and a kettle of hot water costs you nothing you were not already paying.
The trap is chemical drain cleaner. Tipped down a pipe that is fully blocked, it does not drain away and do its job. It sits in the standing water, doing very little except waiting for whoever opens the pipe next, and if that is me then we both have a caustic problem to deal with before the actual blockage. That caution runs right through our common drain unblocking mistakes guide for a reason.
A professional callout is not free, and I will not pretend otherwise. Across the UK a straightforward clearance tends to land somewhere in the low hundreds, more if it turns into a jetting job on a badly silted run, and there is a proper breakdown of what moves that figure in our guide to blocked drain costs. Our own price comes over the phone once we know what the job actually is, because quoting a drain you have not seen is guessing. The sum that matters is the comparison: an afternoon of failed effort plus a bottle of chemical plus a snapped rod down the pipe often costs more, in money and in mess, than one visit that ends it.
The risk you take on with a rod
Rods deserve their own warning, because this is where a cheap DIY attempt becomes an expensive one.
Pushed hard into a bend by someone who cannot feel what the head is catching on, a rod section can unscrew itself and stay down there. Now the drain is blocked by the original obstruction and a length of steel wedged behind it, which is a worse job than the one you started with. If you are already in that spot, stop pushing and read what to do when your rods are stuck before you make it deeper.
Why the line falls where it does around here
Brighton and Hove are full of Victorian terraces where one drain run serves several houses at once. That old shared layout is exactly why household DIY hits its ceiling so fast here: a blockage in the communal section shows up in more than one home, and no single household plunging away at their own sink was ever going to reach it. The steep gravity runs down through Hanover and Kemptown silt up quickly too, so the margin between a clear pipe and a slow one is thin.
There is also a boundary question that decides who even pays. A blockage on your own private pipe is yours to clear, but once it is past your property line in a shared or public sewer it is usually Southern Water's to deal with, and free. Knowing which side of the line you are on saves both effort and money, and it is worth a look at who is responsible for a blocked drain before you spend either.
So which should you do?
Start with the plunger and the trap. Give it an honest half hour on a single slow fitting, seal the overflow, try the hot water, try the snake. If the water clears and holds, brilliant, you saved yourself a callout.
If two fittings are struggling, if the gully outside is full, if it keeps coming back, or if you are eyeing up the chemicals in frustration, that is your cue to stop. Book blocked drain clearance and let the right kit finish it. We cover Brighton, Hove, Worthing and everywhere across Sussex, day or night.
Tried the plunger and it lost? Get it cleared today. Call 07459 599505