Tile grout problems. Why does grout get holes and/or crumble?

why tile grout becomes crumbly powdery

Photo above: The photo above shows the tile grout is clearly breaking down between the tiles of this shower floor.  Scroll down to see the ‘after’ photo after our team has regrouted the shower.

Grout, the substance between tiles, should be easy to maintain and water-resistant. Water shouldn’t be able to penetrate through to the substrate below.

If tile grout begins to break down (i.e. crumbly and/or powdery) then it is likely not doing its intended job.  To prevent water from penetrating tile joints and potentially causing damage to internal building walls and floors, it’s paramount the cracks be repaired as soon as possible.

Typically crumbly or powdery grout is caused by poor mixing and/or application by the tiler.  When tiling grout and water are mixed, a chemical reaction occurs which turns the mixture from a pasty consistency when wet to a hard joint when dry.  If the tiler hasn’t prepared the tiles appropriately, mixed the grout incorrectly, uses inferior or expired grout mix, then the grout will fail.

An effective long term solution to fix broken or inadequate tile grout is usually to scrape out the old grout and replace it.  Regrouting can transform tiles making them look as good as new, saving you hundreds of dollars.

tile group repair service
Above: The photo above shows the transformation after we regrouted the shower and surrounded tiles.

Our tile grouting repair services

Don’t waste money replacing your kitchen or bathroom tiles.  Tile regrouting will make them look as good as new, breathing life back into your kitchen, bathroom or laundry and potentially saving you hundreds, even thousands, of dollars.

Our tile regrounting and repair services is a fast and affordable way to breathe new life into any tiles around the home – inside and out.

We are fully licensed tilers who specialise in the repair and waterproofing of all tiled areas including bathrooms, laundries, kitchens and balconies.  Tile regrouting can save you hundreds, even thousands of dollars, as you don’t have to replace any tiles. It also ensures you’re able to walk on your tiled floors very quickly.

Our tilers use only quality materials and our workmanship exceeds the Australian Standard requirements.  Over the past 25+ years, we have built a solid reputation based on excellent quality and exceptional service.

We service Sydney’s Northern BeachesNorth Shore and North Sydney areas, 24 hours / 7 days.


For expert advice and a quote to replace tile grout, contact our friendly team anytime. We service all Northern Beaches and North Shore suburbs 24 hours, 7 days a week.