I am in the process of renovation of my 20yr old apartment. Paint wall, ceilng, sand floors etc. Not sure though what's the best way to restore windowsills, made of some marble like stone and look rather used. Looking for cost-efficient approach...
not sure what you mean renovating the marble unless the surface is worn. if it is marble then progressive grits from coarse to extremely fine should be used to restore the "patina" to the surface. grinding by hand or machine comes to mind.
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