Skip to main content
Bunnings

Sign in or sign up

No Bunnings account? Sign up
or
PowerPass customer?
Visit the dedicated trade website

Project list

Sign in to your account

Our Price Guarantee

How to replace a toilet seat

A cracked toilet seat

Overview

It’s easy to install a toilet seat and it doesn’t take very long. There are plenty of different sizes, colours and shapes to choose from, so you’re sure to find one that matches the shape of your toilet bowl and is right for the style of your bathroom.

Steps

1Check the size of the old toilet seat

You're working with a toilet, so start by staying safe – put on a pair of rubber gloves. Toilet seats come in a variety of sizes. Check the measurements of the seat's fastening bolts to make sure you buy a seat that will fit properly on your toilet bowl.
Read our guide on how to find the right shape, fixings and measurements of your existing toilet pan. (101 KB)
A cracked toilet seat

2Remove the old toilet seat

There are two wing nuts holding the old seat on to the toilet bowl. Undo the nuts and lift the whole toilet seat assembly off the bowl. Now that you've got the lid off, take the opportunity to give the top of the bowl a good clean with disinfectant. 
A plastic nut and bolt that secures your toilet seat to your porcelain bowl

3Install the new toilet seat

Slide the plastic bolts into the slots on the back of the new seat. Insert the bolts into the holes at the back of the toilet bowl and screw the wing nuts into place. Once the nuts have been firmly tightened, the seat is installed and ready for use.
Plastic bolts fitted to the underside of your toilet seat
Health & Safety

Asbestos, lead-based paints and copper chromium arsenic (CCA) treated timber are health hazards you need to look out for when renovating older homes. These substances can easily be disturbed when renovating and exposure to them can cause a range of life-threatening diseases and conditions including cancer. For information on the dangers of asbestos, lead-based paint and CCA treated timber and tips for dealing with these materials contact your local council's Environmental Health Officer or visit our Health & Safety page.

When following our advice in our D.I.Y. videos, make sure you use all equipment, including PPE, safely by following the manufacturer’s instructions. Check that the equipment is suitable for the task and that PPE fits properly. If you are unsure, hire an expert to do the job or talk to a Bunnings Team Member.