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Question DetailsAsked on 3/5/2018

How long should shower floor tile grout last

The bathroom remodel was completed in December of 2016. A few months later we noticed mold on the floor so the contractor pulled up and relayed a section of the floor tiles and a year later we have noticed some of the grout chipping away. Is this normal or not done correctly?

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Voted Best Answer

Unless you are using an acidic cleaner like Lime Away or vinegar or such, should last at leat 10 and probably more like 20 years - not spotless clean, but not chipping out either. My guess - he laid it on too thin a substrate (plywood) or that is getting wet and rottingf (or already was), or he used a flexible pan/base arrangement and the tile floor is moving (assuming this is restricted to the floor) when you use it and causing grout cracking.

Definitely not "normal" for a quality job, but given it has been more than a year since the job was done, also not likely to repair it for free. Also, MANY (maybe most or nearly all) the preformed bases and pans these days are way too flexible and do not provide the solid, firm, immoveable base which the tile needs to not crack up. I still adhere to the "mud base" of concrete over the pan over 3/4" ply over strong joists as the only truly long-term tile shower floor method.

Whether this is a fatally flawed install or not no way to tell without checking it out invasively - commonly people get grout joint failures, assuming a limited number, repaired up to a couple of times, then if it keeps happening at the same spots, get the entire shower floor/base (which may or may not mean redoing the surround too depending on how it was done) redone. You can pay for a LOT of grout popout repairs for the cost of a redo - and not actually real tough to learn to do yourself. Be sure new grout is properly sealed after grout has cured but before use - so typically out of service for a couple to few days.

Answered 2 years ago by LCD

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