HOW-TO GUIDES
How to fix a cracked sink
Updated 06/26
By: Laura Macdonald
Reviewed: Kim Staples
In this guide, we'll guide you through how to fix a cracked sink and a chipped sink - using two slightly different methods for each predicament. In no time at all, your sink will be good as new.
How to fix a crack, chip, or hairline crack in a ceramic sink
How to use epoxy adhesive or putty to fix your sink
Why it's important to fix and eventually replace a cracked sink
When to hire a sink repair service - and how to find the right tradesperson for the job
We use our bathroom and kitchen sinks multiple times a day. A cracked or chipped sink is a frustrating problem that quite literally stares you in the face until it's fixed. And if it's causing leaks, that's an even bigger problem.
The good news is, fixing a cracked or chipped sink is something you may be able to do yourself.
How to repair a chipped ceramic sink
This section explains how to fix a chipped ceramic sink.
If you still have the broken piece of sink, you can use an epoxy adhesive to fix it. However, don't worry if not, it's still possible to remedy a chipped sink with an epoxy putty alone.
Tools and supplies
An epoxy adhesive (can be purchased from your local DIY store)
Sandpaper
Clean cloths
A clean surface to mix the adhesive (an old tile works well)
Disposable gloves
5 steps to repair a chipped sink
Take your sandpaper and lightly rough up the areas that are to be bonded together: the chipped area and the piece that's chipped off
Next, using your clean cloth, clear away the dust so your work area is completely clean and dry
Refer to the manufacturer's instructions to prepare the epoxy adhesive. Typically, this involves mixing a resin and hardener together
Then apply the adhesive to the chipped area and insert the chipped piece, using gentle pressure to ensure a snug fit
Finally, gently wipe away any excess adhesive with a clean, damp cloth and allow it to dry for the recommended time
Find trusted bathroom fitters near you
How to repair a hairline crack in your sink
A hairline crack in your sink is often caused by a heavy object being accidentally dropped into it. Frustrating as it is, don't panic, hairline cracks can be fixed. Here's how:
Tools and supplies
An epoxy putty (can be purchased from your local DIY store)
A crafting knife and putty knife
Sandpaper
Clean cloths
All-purpose surface cleaner
Disposable gloves
5 steps to repair a hairline crack in a sink
Dirt and grime can accumulate in a hairline crack, so the first job is to clean the area thoroughly with a cloth and an all-purpose surface cleaner
Next, cut a piece of epoxy putty roughly the same size as the crack you're filling
Mix the epoxy putty together as per the manufacturer's instructions
Apply the putty to the cracked area and use a putty knife to smooth it over
Referring to the manufacturer's instructions, sand the putty gently until it's flush with the surface of the sink. Allow to dry
The same process can be used for kitchen sink crack repair and bathroom sink cracks.
Why fix a cracked sink?
Your cracked sink may not be leaking or causing problems right now, but it's still vital to repair it - and preferably replace the sink as soon as you're able.
It's not just unsightly - a damaged sink has practical implications too. Even the slightest crack can allow water to seep through, causing leaks and costly water damage.
And, worse, a hairline crack can suddenly deteriorate or even shatter your whole sink.
A chip in the surface, meanwhile, is a haven for bacteria. It makes keeping your sink fully clean and hygienic almost impossible. Once it's filled in and smoothed out, you're able to clean it properly again.
How does a sink get cracked?
The most common cause of a crack in a sink is a sudden impact. If you recently dropped something heavy in your sink, that's probably the culprit!
That said, cracks can still appear in ceramic, porcelain, or resin sinks even without a clear cause. It could be:
Thermal shock - For instance, pouring very hot water into a cold sink
Uneven pressure - If the sink's drain or tap hardware is too tight, this can increase the pressure on the sink over time, leading to cracks
Age and general wear and tear - An old sink can get a hairline crack as its materials degrade over time
Who can repair a cracked sink?
There are a few types of tradespeople who can repair a cracked or chipped sink. They include:
Bathroom repair specialists
When you search for a tradesperson on Checkatrade, you can specify exactly what the job is upfront - and our tradespeople list their services clearly on their profile. That helps you narrow down a shortlist of tradespeople to hire for the job.
Find a ceramic sink repair service near you
No time to complete this job yourself? No problem. Simply search our leading directory to find a tradesperson in your local area who offers sink repair. Just add your postcode to the box below.
Find trusted bathroom fitters near you
You can also post your job, and tradespeople who offer sink repair services in your area will get in touch with quotes. Or download the Checkatrade app for an easy way to contact tradespeople.
FAQs about cracked sink repair
To fix a cracked sink, the best sealant to use is either a waterproof epoxy adhesive or a silicone-based sealant.
Plumbers in the UK charge an average of £50 per hour. It shouldn't take more than an hour or two to fix a cracked sink, so expect to pay about £50 to £100.
See our guide to plumber costs for more info.
You can temporarily glue a cracked sink - but rather than using any old glue, the best thing to use is waterproof epoxy adhesive.
Yes, it's possible for a cracked sink to leak - though not in every case. But even if your cracked sink isn't leaking right now, the crack can still get worse over time and lead to leaks, damp, and other problems.
Yes, it's possible to reglaze a cracked sink. If the problem is just a hairline crack or chip, you should be able to reglaze after repairing it.
It's fine to use a cracked sink temporarily, but it's not safe long term. Although a small chip or hairline crack won't stop you using your sink, it's important to get it fixed or replaced as soon as you're able - the crack can grow or suddenly shatter.
At Checkatrade, we're here to help, whether it's with finding costs, planning a renovation, or searching for ideas and inspiration, you'll find plenty of content on our blog to make your project a success.
See the tradespeople we've checked for your job