Blocked Drain Myths | What the Camera Actually Shows

Half the calls we attend across Haywards Heath, Lindfield and Franklands Village end the same way. The homeowner has already tried something they read online, it hasn't worked, and they're not sure why. Usually, the answer is in the camera footage within two minutes. Myths about drains are stubborn things. Here are the ones we bust most often.

Myth 1: Bleach will clear a slow drain

It won't. Bleach is a disinfectant. It kills bacteria and lifts surface staining. What it doesn't do is dissolve a grease plug compacted inside a 100 mm clay lateral, or shift the wedge of hair and soap scum that's accumulated at the first bend under your Bentswood bathroom floor. Standard underground laterals run at 100 mm; if your property connects to a shared 150 mm main, the same logic applies at scale.

Pour bleach down a slow drain and you'll get a drain that smells cleaner for a day, then runs slow again, because the blockage is still there. High-pressure water jetting removes it. Bleach does not.

Myth 2: Root ingress is obvious from the surface

This one catches people out. The assumption is that if a tree root has worked into the pipe, you'd know: a sunken patch of garden, a crack in the drive, something visible. In practice, root ingress rarely announces itself above ground. What we see on the camera is a fine web of feeder roots threading through an open joint, gradually accumulating debris until the pipe is 70 or 80 per cent occluded. The garden above looks perfectly normal.

Estates around Lucastes, Bolnore Village and the older streets near Muster Green have a lot of mature tree cover and clay pipe systems that are 50 to 80 years old. Open joints in clay are common, and roots find them without leaving any surface evidence. A repeat blockage that keeps coming back every few months is the clearest tell we see.

Myth 3: A plunger always fixes a blocked toilet

Sometimes. A plunger works on a soft, local blockage sitting just below the pan. It doesn't work on anything further down the line, and it actively makes things worse if there's a partial collapse or root ingress in the lateral beneath your garden. What happens then? You force water and waste against an obstruction that isn't going to move, and you risk pushing a displaced joint further out of alignment. The camera tells us which situation we're in. A plunger doesn't.

Myth 4: Drain problems always start inside the house

Not in RH16 and RH17. Clay pipe systems across Walstead, Scaynes Hill and the older parts of Cuckfield are frequently 50 to 80 years old. Ground movement alone can open joints and create bellied sections that hold standing water and debris. Common findings on a CCTV survey:

• Cracked or open joints from seasonal ground movement
• Bellied pipe sections that never fully clear between blockages
• Partial collapses that have been there for years, quietly accumulating

A blockage with a structural cause won't respond to plunging or chemical treatment. It needs a CCTV survey to locate the defect, then a repair or relining to fix it properly.

On relining specifically: Drainsco offers a 20-year guarantee on drain relining work. That covers the liner installation itself. Any excavation repair or other remedial work is discussed and priced individually, so ask us what's covered when we quote.

If a drain isn't clearing and you're anywhere across the RH postcodes, Drainsco covers Haywards Heath and the surrounding villages, with engineers available around the clock. There's no call-out fee, and you'll get a clear price before anything starts. Sometimes it's a straightforward jet. Sometimes the camera finds something that explains years of repeat problems.