# What is a fatberg and how do you avoid one?
If your drainage is acting up, the key is to work out whether you’ve got a small local restriction or a bigger issue in the main line. A calm, methodical approach usually beats throwing products at the problem.
## Quick checks before you start
– **Is it one fixture or several?** Multiple slow drains usually means a deeper restriction.
– **Any signs of overflow?** If water or sewage is coming up, stop using water and act quickly.
– **Any recent changes?** Heavy rain, building work, or new appliances can sometimes trigger symptoms.
## Quick diagnosis: local vs main drain
– Only one fixture slow (e.g., just the sink)? That’s often a local blockage near the trap or branch pipe.
– Two or more fixtures affected (toilet + shower, or sink + bath)? That often points to a deeper restriction.
– Outside drain/manhole high or overflowing? Treat it as a main drain issue and stop using water indoors.

## Safe DIY steps that often work
1. Stop using water for 10–15 minutes so you can see what changes rather than masking symptoms.
2. Try a proper plunger technique: seal, steady push/pull, and block overflows where possible.
3. Check and clean the trap (for sinks) or the hair trap/cover (for showers) — many ‘blockages’ are right there.
4. Flush with hot water (kitchen sinks) or warm water (bathrooms). Avoid boiling water on unknown plastics.

## Common causes (and what they look like)
– **Build-up in the branch pipe:** slow drains that respond to plunging but return later.
– **Deeper restriction:** more than one fixture affected, gurgling, smells or outside levels high.
– **Damage or roots:** repeat blockages that return quickly after clearing.

## What NOT to do
– Don’t keep flushing or running taps to ‘push it through’ — that’s how overflows happen.
– Don’t mix drain chemicals. If you’ve already used one product, don’t add another.
– Don’t poke sharp metal objects into pipework — it can damage seals and traps or push the blockage deeper.

## When to stop DIY and call a professional
Call for help if any of these are true:
– The blockage is affecting **multiple fixtures** (toilet + shower + sink).
– Water levels are **rising** or you’re seeing **overflow**.
– The problem returns within days/weeks.
– You suspect **outside drains**, **roots**, or **pipe damage**.

## What a professional will do (so you know what to expect)
– If the problem is recurring, a pro clear is often faster and cheaper than repeated DIY attempts. A proper clearance (often jetting) removes the build-up from the pipe walls rather than just making a small hole through it.
– If there are signs of damage, root ingress, or poor pipe gradient, a CCTV drain survey can show exactly what’s going on so you’re not guessing.

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## Need help now?

Need urgent help with a blocked drain?

**Chris Peters Plumbing & Drainage** can take over safely.
📞 **0791 7852384**
🌍 **https://www.drain-unblocking.co.uk**

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## FAQ
**Can I fix this myself?**

Often yes for minor, local blockages. If multiple fixtures are affected or the problem keeps returning, it’s usually deeper and needs professional clearance.

**Should I use chemicals?**

Use chemicals cautiously and only for slow drains where water still moves. Avoid them in fully blocked drains or if you might need rodding/jetting.

**How do I know it’s the main drain?**

If the toilet, shower and sink are all slow, or you get gurgling and smells across the property, it’s likely a main-line restriction.

**When should I call a drain engineer?**

Call if there’s overflow, sewage smells, repeated blockages, or you’ve tried safe DIY steps without improvement.

**What will a professional do?**

Typically locate the best access point, clear the blockage with rodding/jetting, confirm flow, and recommend CCTV if there are signs of damage or roots.