Stopping concrete crumbling

[moguk]

At our new house the garage floor was recently laid (within the last couple of years) - but not very well.
When I walk on it the surface literally turns to dust under foot and the aggregate floats loose on the top. Even worse if I sweep it.

At some point I had intended to add levelling compound - but not for a whil., However in the meantime I need to stop the dust and wonder how effective the dustproofer/sealer available at places like Screwfix, Amazon etc, is at doing this.

Has anyone any experience of this type of dustproofer/sealer? Was it effective? What area would a 5 litre tin cover?

Thanks

 

[^woody^]

Yes they work. See the tin for coverage rates.