Shower Drain A13318: Replacing a Worn Bathroom Drain
By Maintenance Depot Plumbing Team · Last reviewed
Quick answer
The A13318 shower drain replaces a rusty, stained or broken drain. Measure the opening and outlet size, check how the old drain is connected, then fit the new drain with the correct seals.
Old shower drains rust, stain and crack, and can let water leak beneath the floor. The A13318 shower drain is a bath accessory designed to replace a worn drain and give your shower a fresh finish.
Specs at a glance
| Spec | Detail |
|---|---|
| Product | Shower drain |
| Model | A13318 |
| Category | Bath accessory |
| Use | Replacement shower drain |
Signs it's time to replace your shower drain
- Rust or discolouration around the grate
- A cracked or loose drain cover
- Water stains on the ceiling below an upstairs shower
- Persistent odours even after cleaning
Before you start
- Measure the drain opening and note the outlet pipe size.
- Check whether the existing drain is threaded, glued or compression-fit.
- Take a photo of the old drain to compare.
Replacement steps
- Remove the grate and clean out the drain opening.
- Unscrew or cut out the old drain body as needed.
- Clean the shower base or tile surface around the opening.
- Install the new drain with the correct gaskets or sealant.
- Fit the grate and test with running water.
Maintenance tips
- Clear hair from the grate weekly.
- Use a drain snake monthly in busy showers.
- Avoid harsh chemical drain openers that can damage seals.
Not sure which drain fits? Send a photo to the Maintenance Depot team and we'll help you match it.
Frequently asked questions
How do I know my shower drain is leaking?
Water stains on the ceiling below, loose tiles near the drain or persistent damp smells.
What do I need to measure?
The drain opening, the outlet pipe size and how the old drain is attached.
Can I use chemical drain cleaner on it?
Avoid harsh chemicals that can damage seals; use a drain snake instead.