Grout Repair & Regrouting Auckland
Cracked, crumbling or mouldy grout? We repair, regrout and reseal tiled showers, floors and splashbacks across Auckland.
Auckland grout repair
When you need grout repair
Grout is the part of a tiled room that wears out first, and it’s meant to. The tiles can be perfect while the grout between them gives up. It cracks. It crumbles. It goes black with mould and won’t scrub clean no matter what you throw at it. Sometimes the damage is one dodgy line along the bottom of the shower, sometimes it’s the whole floor. People call us when a crack keeps coming back in the same spot, when water has started getting where it shouldn’t, or when a bathroom just looks ten years older than it is.
The good news: grout is repairable, and done properly a regrout makes a tired bathroom look newly tiled for a fraction of the cost of retiling. The catch: it has to be done right, and there are jobs where new grout honestly isn’t the fix. We’ll tell you which one you’ve got.
What we handle
Grout work we take on
From a single cracked joint to a full shower regrout, here’s the grout work we take on across Auckland.
Grout repair
When a crack shows up in one line of grout, the temptation is to smear new grout over the top. It doesn’t work. New grout over old is a thin skin with nothing to grip, and it flakes off within months. A proper repair means raking the old grout out to at least two-thirds of its depth, then cleaning the joint, then packing new grout in so it actually bonds. That’s what we do even on a small repair, because a repair that fails in three months isn’t a repair.
Regrouting showers and bathrooms
Picture your shower with every grout line fresh and bright, silicone crisp at the corners. That’s a regrout. The old grout gets stripped out. The joints get cleaned. New grout goes in across the lot, and every junction gets fresh silicone. Most showers want this roughly every eight to ten years, and doing it on time is what lets the waterproofing underneath live out its full life. It’s the single best-value facelift a tiled bathroom can get.
Epoxy grout upgrades
Why does hotel-bathroom grout stay looking new? Usually because it’s epoxy. When we regrout, upgrading from standard cement grout to epoxy buys you a joint that shrugs off water and stains, and gives mould almost nothing to grow on. Exactly what an Auckland shower needs. It’s fussier to install, with a short working time and careful clean-up, which is why it’s a professional job. We’ll steer you to it where it earns its keep and not where it doesn’t.
Grout cleaning and sealing
Not every dark grout line needs replacing. Cement grout is porous, so it drinks in whatever lands on it, and a professional deep clean followed by a penetrating sealer can bring it back and slow the next round of staining. Sealing only works on sound grout though. And it isn’t forever: heavy-use areas want re-sealing periodically. If cleaning is all your grout needs, that’s what we’ll recommend.
Silicone and movement joints
Alongside every regrout comes the silicone. Where the floor meets the wall, in the corners, around a hob, those joints move as the building moves, and they need flexible silicone, never rigid grout. Grout in a movement joint cracks on repeat no matter how well it’s applied. We cut out the old silicone, treat any mould hiding behind it, and run new lines, so the whole wet area is sealed the way it should be.
When regrouting isn’t the answer
New grout can’t fix a failed waterproofing membrane. Grout was never the water barrier; the membrane underneath is. If your shower is leaking into the wall, the skirting outside the bathroom is swelling, or the same crack keeps returning no matter who repairs it, the problem is deeper. A failed membrane, or a floor that’s moving. In those cases we’ll tell you straight and quote the real fix, a strip-back and re-waterproof, because regrouting over a leak just hides it while the damage spreads.
Grout repair across Auckland
Grout work takes us all over the city. South and East Auckland, from Papakura and Takanini through Manukau, Howick, Pakuranga and Botany. Central suburbs like Remuera, Ellerslie, Epsom and Mount Eden. West to Henderson and New Lynn, and across to the North Shore, because regrouts and repairs are compact jobs that travel easily.
Auckland’s humidity is hard on grout. Bathrooms stay damp longer here, which is why grout that would be fine in a drier city grows mould in ours. Not sure we cover your street? Ask. The answer’s usually yes.
How it works
What to expect
Look and quote
First, an honest look. We check how much of the grout has actually failed and test the suspect lines. Then you get the straight answer: repair, regrout, clean and seal, or something more. And a clear written quote for it.
Rake out
Then the rake-out. Old grout comes out to at least two-thirds of its depth with grout rakes and oscillating tools. Old silicone gets stripped at the same time, and the joints are cleaned back to a sound base.
Regrout
Next the new grout, cement or epoxy, packed in properly and cleaned off. Fresh silicone goes into every movement joint and corner.
Seal and hand over
Last, sealing where it’s worthwhile, a final clean, and a walk-through. Your bathroom looks newly tiled and the joints are sealed the way they should be.
Done properly
Why choose Hi Tech Tiling
Grout work rewards patience and punishes shortcuts, and as tilers we treat it as tiling, not cleaning with extras. We rake joints out properly instead of skimming new grout over old. We renew the silicone at every movement joint instead of grouting corners rigid. And because we tile and waterproof for a living, we can tell you honestly when the problem isn’t the grout at all but the membrane or movement underneath, and what fixing that actually involves.
Mould has a habit of coming back in Auckland bathrooms that don’t breathe, so we’ll also point out the simple stuff, like the extractor fan the Healthy Homes ventilation standard expects in a bathroom, that keeps your new grout cleaner for longer. We stand behind our workmanship, we’re local, and we’d rather quote you a small honest job than a big unnecessary one.
Good to know
Grout questions, answered
Can you put new grout over old grout?
No, and anyone who offers to is selling you a failure. New grout over old is a thin skin with nothing to grip. It cracks and flakes within months. The old grout has to come out, at least two-thirds of its depth, so the new grout can bond properly. That’s the job.
How often should a shower be regrouted?
Roughly every eight to ten years for most showers, sooner if the grout is cracking or crumbling. The waterproofing membrane underneath is built to last longer than the grout, so a mid-life regrout with fresh silicone is what protects it.
Is my mouldy grout ruined, or can it be cleaned?
Depends how deep the mould has gone. Surface mould on sound grout cleans off, and sealing afterwards slows it coming back. But if the grout crumbles when you press a fingernail into it, or the black is growing through the joint rather than sitting on it, the grout is done and needs replacing.
Why does the same grout crack keep coming back?
Because the crack isn’t a grout problem. A crack that returns in the same line, usually at a corner or where the floor meets the wall, means the joint is moving. Movement joints need flexible silicone, not grout. And if the floor itself is flexing, that needs looking at before any regrout will hold.
Will regrouting stop my shower leaking?
Sometimes, and we’ll be straight with you about it. If water is only getting through failed grout lines and the membrane underneath is sound, a regrout with new silicone can stop it. If the membrane has failed, no amount of grout will help, and the honest fix is a strip-back and re-waterproof. We check before we quote.
Is epoxy grout worth it for a regrout?
Often, yes, especially in showers. Epoxy resists water and stains far better than cement grout, and mould struggles to get a hold on it. That’s exactly the fight an Auckland bathroom is in. It takes more skill to install, so we recommend it where it makes a real difference and skip it where it doesn’t.
Talk to Hi Tech Tiling
Grout looking tired, cracked or black? Send us a photo or book a look, and we’ll tell you honestly whether it needs a repair, a regrout or something more. Call 021 681 166 or send through the details.
Hi Tech Tiling, 3 Bellfield Road, Ōpaheke, Auckland 2113. Phone 021 681 166.