What Type of Grout Should You Use to Fix a Leaking Shower?
Is there a specific type of grout that is better for to fix a leaking shower?
The Truth is that you don’t have a leaking shower because your grout is weak or cracked or because there’s missing silicone around your main perimeter joints.
The only reason why a shower leaks is because the waterproofing membrane behind the tiles has failed:
That membrane is what protects your walls and floors from water damage — and once it’s compromised, leaks begin to appear in the form of damp patches, mold, bubbling paint, or swelling skirting boards.
HOWEVER, The only way to replace a failed waterproofing membrane is by ripping out all the tiles and starting from scratch and that’s not an option available or worth for everybody.
See it is kinda like saying that if you car breaks down you should go and buy a brand new one rather then going to the mechanic to try and fix it and Just like a mechanic fixes what’s broken we offer leaking shower repairs services without removing a single tile.
Types of Grout Used in Leaking Shower Repairs
Nr.1: Epoxy Grout — The Famous Waterproof Grout
Let’s List the Benefits of the Epoxy grout Grout:
Waterproof (Duh): Although flexible grout is water resistance, Epoxy grout does not lose its waterproof properties over time as the flexible grout. Making it a much longer lasting option.
Stain and Mold Resistant
Purposely made for Good for Wet Areas
Negatives:
A Leaking shower repair service with Epoxy Grout can be up to 50% more expensive, and here’s why:
Harder to Work With: It sets quickly, and if you don’t apply it just right, it can be hard to clean off the tiles.
The product is more expensive to buy.
Harder to Apply: It’s thick and it’s sticky with less working time before it hardens.
Harder to Make It Look Even: Getting the grout lines smooth and even takes skill. It’s easy to make a mess or end up with rough or uneven lines.
Nr.2: Flexible Grout — Friendly Budget Option
Benefits of the Standard Flexible Grout:
Less Expensive (Duh)
Water Resistance: Many flexible grouts are polymer-modified, making them more water-resistant. Not as water-tight as epoxy, but a decent barrier which combined with a penetrating sealer becomes even stronger!
Easier Application Than Epoxy (one of the reasons why it is cheaper).
Negatives:
Not 100% Waterproof: It will lose its water resistance properties over time.
Needs Sealing: Unlike epoxy, flexible grout still needs to be sealed for better protection.
Can Stain Over Time: It can still discolor, especially in moldy, humid environments.
CONCLUSION: Which Grout Is Better to use?
In our opinion there’s no single “right” or “wrong” choice when it comes to grout. It really comes down to what you need and what you value most in a repair.
If you’re looking for long-term durability, minimal maintenance, and a completely waterproof result, epoxy grout is the superior option. It’s more resistant to stains, mold, and chemical damage — and it keeps your shower looking cleaner for longer. But it’s also substantially more expensive, plus not everyone is looking for a 15 years solution.
If you’re planning to renovate your bathroom in a year or two, or if you just need something to get you through the next few years, the flexible grout option (paired with a high-quality sealer) still provides a reliable and cost-effective result. Yes, it won’t offer all the benefits of epoxy, but it gets the job done.
So if you’re not sure which grout is right in your situation, visit our Leaking Shower Repairs Perth page and contact us for a free expert quote.
And remember: At Regrouting Rescue, we don’t push one solution over the other — we simply help you choose the one that fits your goals, timeline, and budget.