Advice needed grout cracked

Discuss Advice needed grout cracked in the Tiling Forum area at TilersForums.co.uk

Ian Barrow

Active Member
Good evening, looking for a bit of advice. Had a new bathroom fitted a couple of months ago and grout in all corners has hairline cracks. Builder has regrouted once and covered with clear silicone. However, has cracked again under sealant. Is Mapei grout and matching sealant colour isn't great. Is clearing of cracked grout and application of sealant in corners best resolution?
 

Andy Allen

Metro specialist & forum entertainer!
Trusted Advisor
Professional Tiler
JOTM Winner
The corners should never have been grouted in the first place, colour match silicone should of been used...
 
OP
I

Ian Barrow

Active Member
Thanks Andy, if we replace grout with sealant, does the grout have to be fully removed? Are there any risks of leaving cracked grout with clear silicone over the top as it currently is?
 

impish

Trusted Advisor
Professional Tiler
Problem = Builder.
Solution = Tiler.

Rake out and clean the internal corners and then silicone.
Grout acts as a water magnet, sucking water into corners and preventing silicone doing it's job.
 
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