Is epoxy grout waterproof?
Epoxy grout is non-porous, so unlike cement grout it doesn't soak up water. It doesn't replace the waterproof membrane under the tiles, though.
Epoxy grout vs cement grout
| Comparison | Epoxy grout (Mapei Kerapoxy) | Cement grout |
|---|---|---|
| Absorbs water | No, it's non-porous | Yes, it's porous |
| Needs sealing | No | Yes, regularly |
| Mould and staining | Highly resistant | Stains and grows mould in wet areas |
| In a shower over time | Holds up far better | Cracks, washes out and lets water through |
| Cost to install | Higher (more material and labour) | Lower |
That's why we never quote cement grout. Regrouting a shower with cement often puts you back where you started within a few years.
Where we use epoxy regrouting
- Showers: walls and base, to stop leaks and get rid of mould for good. Shower regrouting Melbourne
- Leaking showers: epoxy regrout plus a full reseal. Leaking shower repair Melbourne
- Tiled balconies: to stop water getting in through the grout and leaking into the room or unit below. Balcony regrouting Melbourne
- Bathroom floors and splashbacks, on request
How epoxy regrouting works
- We remove the old grout to a proper depth with specialist tools, without damaging the tiles.
- We vacuum and clean every joint and treat any mould.
- We mix Mapei Kerapoxy in your chosen colour and work it into every joint.
- We clean the epoxy residue off the tile faces before it sets, which takes skill and is why epoxy needs an experienced installer.
- We reseal the corners and junctions with silicone.
- The epoxy cures in 24–48 hours.
Epoxy regrouting prices in Melbourne
| Job | Price (ex GST) |
|---|---|
| Shower base only | from $650 + GST |
| Two-wall shower | from $1,250 + GST |
| Three-wall shower | from $1,450 + GST |
| Large or walk-in shower | from $1,650 + GST |
| Balcony up to 5 m² | from $2,200 + GST |
| Balcony 6–8 m² | from $2,400 + GST |
| Balcony 9–12 m² | from $3,100 + GST |
| Balcony 13–20 m² | from $4,000 + GST |
Small tiles, mosaics, existing epoxy that has to be ground out, heavy mould and difficult access change the price. Send photos for a fixed quote. Shower price guide Balcony prices
Colours
Mapei Kerapoxy comes in a wide range of colours. We'll help you choose one to match or refresh your tiles, and customers often tell us the colour match is spot on.
Who does the work
Every job is done or checked by Hervé, our Head Installer and Quality Assurance Manager, who has more than 15 years' experience in epoxy grouting, waterproofing and shower sealing.
Warranty: 10-Year Warranty on eligible epoxy re-grouting work, subject to terms.
What our customers say
“Steph did the arranging to fit my schedule and Herve who did the work, is a top craftsman. They made it all easy.”
“The old grout and silicone from the shower was removed and replaced with epoxy. Great colour match. … my bathroom was left clean, just as he found it.”
“Very happy with the re-grouting work completed on our bathroom and balcony. … everything was left clean and tidy.”
Rated 4.9★ on Google. Read our Google reviews
Epoxy regrouting FAQs
Is epoxy regrouting worth the extra cost?
In showers and on balconies, yes. Cement grout is cheaper to install but breaks down in wet areas; epoxy holds up far better and doesn't need sealing.
Can you put epoxy over my old grout?
No. We remove the old grout first. New grout over old grout doesn't bond properly.
How long does epoxy grout last?
Epoxy grout is far more durable than cement grout and, cared for properly, lasts many years.
Does epoxy grout go mouldy?
It's highly resistant to mould because water and dirt can't soak into it. Silicone joints still need normal cleaning.
How long before I can use my shower?
After 24–48 hours, once the epoxy has cured.
What warranty do you give?
10-Year Warranty on eligible epoxy re-grouting work, subject to terms.
Want epoxy grout in your shower or on your balcony? Send 3–4 photos to 0458 679 629 or through the quote form for a fixed price.