Blocked Drain Myths Barnstaple | What's Actually True

Half the blocked-drain calls we attend in Barnstaple didn't need to go as far as they did. The blockage was made worse, the pipe was damaged, or money was wasted, because someone believed something they'd read online or heard from a neighbour. These myths aren't obscure. They're repeated constantly, and they cost people real money.

So here's what we actually see on jobs across EX31 and EX32, and why some very confident advice is flat-out wrong.

Myth 1: Bleach will sort a slow drain

What people believe: Pour half a bottle of bleach down, leave it overnight, job done.

Bleach is a disinfectant. It kills bacteria and it'll shift a mild soap scum film if you catch it early enough. What it won't do is break down the fat and grease that's lining the inside of your kitchen drain pipe. That grease is waxy and hydrophobic. Bleach doesn't dissolve it. It sits on top, does very little, and then the householder pours another bottle down a month later.

We jet drains in kitchens on Newport and Pilton high-traffic rentals where tenants have been pouring bleach down for six months. The pipe is full of solidified fat. The bleach has done nothing to the blockage. It has, however, irritated the landlord's wallet.

High-pressure water jetting is what actually clears grease build-up. The force breaks the deposit off the pipe wall and flushes it through. Bleach doesn't come close.

What to do instead: For slow kitchen drains, try boiling water (in plastic pipes, hot but not boiling) followed by a proper degreaser product. If it's still slow a week later, get it jetted before it closes off completely.

Myth 2: Flushable wipes are fine for drains

What people believe: The packet says flushable, so they must be.

This one gets its own Drainsco blog post, so I won't labour it here. Short version: "flushable" has no legal definition in the UK. The wipes pass a single-toilet flush, which tells you nothing about how they behave once they're in a 100mm drain pipe running under a Forches terrace or a Roundswell detached house. They don't break down. They catch on root intrusions, joint offsets, or any rough edge inside an older clay pipe, and they build into a rag-solid mass.

We pull them out of drains in Swimbridge, Bishop's Tawton, Landkey. Every week. They're always the wipes that someone bought with confidence because the packaging was reassuring.

What to do instead: Put them in the bin. Every wipe, every time.

Myth 3: A plunger always fixes a blocked toilet or drain

What people believe: If you pump hard enough for long enough, it'll clear.

A plunger creates pressure. That's useful for a soft, close blockage sitting near the trap. It's genuinely the right first step for a toilet that's blocked by paper. But pressure doesn't fix everything, and it can make some problems worse.

If the blockage is a hardened fat plug 15 metres down the pipe, pressure won't shift it. If there's a root intrusion, you're pushing waste against a tangle of roots, which achieves nothing. If the pipe has a partial collapse or an offset joint, which is common in older properties across Gorwell, Yeo Vale, and Rumsam where clay drainage has been in the ground for 60-plus years, plunging can shift debris into the gap and compound the problem.

Worse, we sometimes arrive at a job where someone has plunged so aggressively they've cracked a plastic trap under a basin. Now there's a blockage and a leak.

What to do instead: Two or three firm plunges is reasonable. If it doesn't shift in five minutes, stop. You've learned the blockage isn't a simple soft plug near the trap, and continuing won't change that.

Myth 4: Drain rods will clear anything

What people believe: If I push the rods in far enough, I can break it up myself.

Rods are useful kit in the right situation, and there's no shame in having a set. But they're a blunt instrument, and they come with a real risk that most DIYers don't appreciate: unscrewing.

Drain rods screw together clockwise. If you rotate them anticlockwise at any point, they unscrew inside the pipe and you've got a bigger problem than a blocked drain. Rods left in a drain under a Westacott driveway are expensive to recover. We've retrieved them.

Rods also can't tell you what they're hitting. A soft grease plug and a partial pipe collapse feel similar at the end of a rod. Pushing harder into a collapsed section can crack it further. A CCTV survey would have shown you which one you were dealing with.

What to do instead: If you're confident with rods and you know your drainage layout, fine. If you've rodded once without result, don't escalate force. Call someone with a camera.

Myth 5: A blocked drain always smells, so no smell means no problem

What people believe: If there's no odour, the drains are clear.

This is the one that catches landlords out most often. A drain can be partially blocked for months with no smell at all. Water is still getting through, just slowly. The smell comes when the blockage becomes near-total and waste starts sitting in the pipe.

We do pre-tenancy CCTV drain surveys on properties across EX32 and regularly find drains that are 60 or 70 percent obstructed with no smell, no overflow, no obvious sign. The landlord had no idea. Six months into a tenancy, a full blockage develops, the tenant calls at 11pm, and a maintenance issue becomes an emergency call-out.

For rental properties especially, "no smell" is not the same as "no problem."

What to do instead: If you own a rental, get the drains surveyed before each tenancy or on a rolling annual basis. It's far cheaper than emergency call-outs and it documents the condition at handover.

Myth 6: If it's draining slowly, just wait, it might clear itself

What people believe: Slow drains sometimes sort themselves out.

Occasionally, a soft blockage does disperse. A clump of hair loosens, a soap ball breaks down. But a slow drain is usually telling you that the pipe wall has build-up, there's a developing grease plug, or something is catching debris further down. Left alone, a slow drain becomes a blocked drain. Left longer, a blocked drain becomes an overflow.

The best outcome from waiting is that nothing gets worse. The more likely outcome, particularly in older clay drainage common across Bickington and Fremington, is that the partial blockage grows until someone's downstairs toilet backs up at the worst possible moment.

What to do instead: A slow drain that hasn't cleared within a couple of weeks deserves a look. Preventative jetting is significantly cheaper than emergency clearance.

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Drainsco covers Barnstaple and the EX postcodes. If something's slow, blocked, or you're not sure what you're dealing with, our engineers are available 24/7. You'll get a clear price before we start, and there's no call-out fee. Give us a call.