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How to Tile Over Existing Tiles?
Thinking about a bathroom or kitchen refresh, but the idea of ripping up old tiles has you ready to throw in the towel?
Good news. Tiling over existing tiles is a real option, and for the right job, it can save time, money and a whole lot of mess. But before you start sticking tiles on tiles and calling it a day, there are a few things you need to know.
Yes, done right, tiling over tiles can look great and last. Done wrong, it can crack, lift, or end up looking like a quick cover-up that never quite sticks.
In this guide, our Cheapestiles experts break down how to tile over existing tiles, when it works, when it doesn’t, and how to get a clean result without cutting corners.
Can you tile over existing tiles?
Short answer. Yes, you can. But only if the existing tiles are in good condition and the surface is properly prepared.
Tiling over tiles works best when:
- The current tiles are firmly attached with no movement
- The surface is flat and even
- There are no major cracks or loose tiles
- Waterproofing underneath is still sound
Why do people tile over tiles
There is a reason this method is popular, especially for DIY renovators and budget updates. It is a great option if you want to refresh a space without turning your house into a full-blown construction zone.
The benefits include:
- No demolition mess or dust
- Faster renovation time
- Lower labour costs
- Less disruption to your home
- Waterproofing underneath is still sound
Why do people tile over tiles?
There is a reason this method is popular, especially for DIY renovators and budget updates. It is a great option if you want to refresh a space without turning your house into a full-blown construction zone.
The benefits include:
- No demolition mess or dust
- Faster renovation time
- Lower labour costs
- Less disruption to your home
When you should not tile over existing tiles
Sometimes, it is better to bite the bullet and start fresh.
Avoid tiling over tiles if:
Tiles are loose, cracked or hollow-sounding
The surface is uneven or damaged
There are waterproofing concerns in bathrooms
You are already dealing with multiple tile layers
Cheapestiles tip: In wet areas like showers, it is often safer to remove tiles and properly check the waterproofing before starting again. It is not the fun option, but it is the smart one.
Steps to tiling over existing tiles
Step 1: Clean the existing tiles properly
Before anything sticks, the surface needs to be spotless. Old tiles collect grease, soap residue and general grime over time. Adhesive will not bond properly to a dirty surface.
Give your tiles a proper clean:
- Scrub with a degreaser or strong tile cleaner
- Remove soap scum and build-up
- Rinse and let the surface dry completely
No shortcuts here. If it is not clean, it will not stick.
Step 2: Rough up the surface
Tiles are smooth by design, which is great for cleaning, but not great for sticking new tiles on top.
You need to give the surface a bit of grip.
This can be done by:
- Lightly sanding the tiles
- Using a primer designed for tiling over tiles
Step 3: Check levels and plan your layout
Adding a new layer of tiles will slightly raise the height of your floor or wall. It is important to plan your layout just like you would with a normal tiling job. Mark centre lines and check where your cuts will fall.
Check for:
- Door clearances
- Step heights
- Fittings like taps, drains and vanities
Step 4: Use the right adhesive
This is not the place to cut corners. You need a high-quality adhesive that is designed for tiling over tiles, as standard adhesive may not bond properly to the existing surface.
Tips for applying adhesive:
- Use a notched trowel for even coverage
- Work in small sections
- Press tiles firmly into place
Step 5: Choose the right tiles
Not all tiles suit this method equally. Lighter, thinner tiles are generally easier to install over existing tiles. Large format tiles can work too, but they need a flat surface and a steady hand.
What tiles to choose when tiling over existing tiles:
- Porcelain wall tiles for bathrooms and kitchens
- Marble look tiles for a clean, modern upgrade
- Concrete look tiles for a minimalist finish
- Mosaic tiles for feature areas or splashbacks
If you are tiling a bathroom floor, always go for slip-resistant tiles. No one wants a bathroom that doubles as a slip-and-slide.
Step 6: Lay the new tiles carefully
Once everything is prepped, it is time to lay your tiles. Start from your centre line and work outward. Use spacers to keep grout lines consistent and check levels regularly.
Take your time and keep everything straight. If something looks off, fix it early. It is much easier than ripping it up later.
Step 7: Grout and finish
Once the tiles are set, it is time to grout. Choose a grout colour that suits your tiles and your space. Matching grout creates a seamless look. Contrast grout highlights tile shapes and patterns.
Tips for grouting:
- Fill joints evenly
- Wipe away excess with a damp sponge
- Buff off haze once dry
This is where everything comes together, so do not rush it.
Common mistakes to avoid
Tiling over tiles is simple in theory, but a few common mistakes can cause problems.
Watch out for:
- Skipping surface prep
- Using the wrong adhesive
- Tiling over damaged tiles
- Not checking levels and clearances
- Rushing the job
Is tiling over tiles a long-term solution?
Tiling over tiles can be a solid solution if the base is in good condition.
For kitchens, laundries and low-moisture areas, it can last well when done properly. For bathrooms, especially showers, it is more of a case-by-case call.
If there is any doubt about waterproofing, it is safer to start fresh rather than risk bigger issues later.
Think of it like this:
Tiling over tiles is a smart shortcut when everything underneath is sound. Full replacement is the better option when you want a complete reset.
Why quality tiles make the difference
If you are putting in the effort to tile over tiles, it makes sense to use tiles that will last.
Better quality tiles are:
- More consistent in size
- Easier to lay evenly
- More durable over time
- Better looking once installed
At Cheapestiles, we stock a wide range of tiles that suit this kind of project, from bathroom wall tiles to kitchen splashbacks and outdoor options.
It means you can upgrade your space without overspending and without cutting corners on quality. If you are not sure where to start, Cheapestiles can help you choose the right tiles, work out quantities and give you the advice you need to get it right the first time.
Call 02 9790 4273 or email info@cheapestiles.com.au
TL;DR:
Can you tile over existing tiles? Yes, provided the original surface is structurally sound, level, and firmly bonded. It is a cost-effective way to refresh a room without the mess of demolition.
Quick Checklist for Success:
- When to do it: Only if existing tiles are crack-free, hollow-free, and waterproofing is intact.
- Preparation is Key: Deep clean with a degreaser and “rough up” the surface or apply a specialized primer to ensure the adhesive bonds.
- The Right Tools: Use a high-quality adhesive specifically rated for “tile-on-tile” applications.
- Watch the Height: Remember that a second layer will raise floor levels; check door clearances and drainage before starting.
- When to avoid: Never tile over loose tiles, damp surfaces, or existing multiple layers.
Still not sure how many tiles you need?
Use our free tile calculator to get an instant estimate in square metres and then add a 10% buffer for offcuts, layout changes or sneaky mistakes. Got an oddly shaped room or complex layout? Give us a call. We’re happy to walk you through it. Call 02 9790 4273 or email info@cheapestiles.com.au and let’s get your tile project squared away.