How to fill and seal garage floor cracks?

[Andeh1]

We have/had some miner cracking in one part of our garage floor. Doesn't seem to be getting any worse the resin tube flooring crack filler I used last year, was pretty rubbish to apply and is breaking out... Despite following the instructions.

Any recommendations for how best to fill these cracks?

Thanks

[Nigel_O]

Just tile over it?

Huge thread about it tiles and garage floor coverings in general here - https://www.pistonheads.com/gassing/topic.asp?h=0&...

[Belle427]

Maybe try a flexible floor sealant, screwfix do a no nonsense one in grey.
Make sure you hoover all the loose debris out first.

[dlks151]

I’d be tempted to break that out to see what’s going on below. If there’s reinforcement in there then all good, otherwise dowel it to provide strength and make good with Fosroc Conbextra GP.

[Promised Land]

dlks151 said:

I’d be tempted to break that out to see what’s going on below. If there’s reinforcement in there then all good, otherwise dowel it to provide strength and make good with Fosroc Conbextra GP.

If the cracks appeared when there were no cracks before I’d certainly investigate to see why it’s happened, just filling the cracks is literally ‘papering over the cracks’ as the saying goes.

Why did it crack? What is going on underneath?

[Steve H]

Come on fellas, pay attention.

The OP says in the first line of his post that it is caused by miners