- Subscribe to RSS Feed
- Mark Topic as New
- Mark Topic as Read
- Float this Topic for Current User
- Bookmark
- Subscribe
- Mute
- Printer Friendly Page
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Highlight
- Report Inappropriate Content
How to fix cracks in bathtub?
Hi All - I have noticed these fine cracks coming up in my bath tub. These are mostly around the grip circles. While doesn’t seem like water may be going in through, however, one of the cracks is too big to ignore. Appreciate any suggestions to fix this issue.
- Labels:
-
Repairing
-
Tools and Materials
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Highlight
- Report Inappropriate Content
Re: Cracks in bathtub
Hi @newbie3,
It sounds like the cracks may be a result of delamination, possibly caused by the suction cups of a non-slip mat, as I experienced with a bath I re-coated a few years ago. Over time, wear and tear can weaken the coating, leading to cracks.
The most effective solution would be to remove the damaged coating entirely and reapply a new one. You can attempt this as a D.I.Y. project using a bathtub refinishing kit, but keep in mind that older tubs may have lead-based paint, so proceed with caution and ensure proper safety measures. Alternatively, seeking professional assistance could provide a more durable and high-quality finish. Regular cleaning and avoiding suction-cup mats in the future can also help prevent recurrence.
Please let me know if you have any questions.
Mitchell
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Highlight
- Report Inappropriate Content
Re: Cracks in bathtub
Thanks Mitchell for a prompt response. Apologies I had not shared a zoomed in picture. Pls see one attached now. Do you still reckon it can be taken care of by only the refinishing kit? No epoxy needed?
We haven’t used any bathmats in the last 5 years. Perhaps there are built in protusions on the floor of the tub for grip. What do you think?
many thanks again for your time.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Highlight
- Report Inappropriate Content
Re: Cracks in bathtub
The tub coating product is a two-part epoxy @newbie3. However, you'd likely need to remove the existing damaged coating on the bath. You could try coating over it, but I am unsure as to the longevity.
What is the tube made from? Be advised these recoating products are not suitable for acrylic tubs as they flex too much.
Mitchell
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Highlight
- Report Inappropriate Content
Re: Cracks in bathtub
Thanks Mitchell!
I am not quite sure what material is the tub made up of. Here are some more pics for reference.
Is there an easy/ reliable way to check?
Nonetheless, the product you recommended - if that is epoxy based then it should be good for taking care of the minor cracks without needed for them to be filled in. Is that understanding correct?
many thanks again with your patience.
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Highlight
- Report Inappropriate Content
Re: Cracks in bathtub
Check to see if the base or side walls flex at all when you push them @newbie3. If they do move, then it's likely acrylic. If it is then I'd suggest enlisting the services of a professional for re-coating.
Mitchell
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Highlight
- Report Inappropriate Content
Re: Cracks in bathtub
Doesn't move at all. Solid as rock. Assuming it is fiberglass then?
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Highlight
- Report Inappropriate Content
Re: Cracks in bathtub
I'm sorry @newbie3. I was fairly convinced you couldn't use this product on acrylic, but apparently you can, and on fibreglass, too. Ideal for ceramic, porcelain, fiberglass, acrylic, cast iron, and steel surfaces.
Mitchell
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Highlight
- Report Inappropriate Content
Re: Cracks in bathtub
So to confirm I should give it a go with the refinishing kit, as per the product instructions. I shouldn't worry about filling in the individual cracks?
- Mark as New
- Bookmark
- Subscribe
- Mute
- Subscribe to RSS Feed
- Highlight
- Report Inappropriate Content
Re: Cracks in bathtub
It does say in the preparation instructions that cracks should be filled with a patching compound @newbie3. However, given that your cracks are hairline, I don't think you'd be able to fill them. A good sanding of the surface and coat over the top should cover them, but I can't guarantee they won't return in the future.
Mitchell

Why join the Bunnings Workshop community?
Workshop is a friendly place to learn, get ideas and find inspiration for your home improvement projects