My patio is made of the yellow tinged cheap stone effect concrete slabs. They've been getting a bit grim and mud tinged recently due to run off and foot traffic.
Today the other half with the best of intentions borrowed a Karcher and has 'cleaned' the slabs. They now are uniformly concrete grey and look like pumice, what I now assume to be a yellow exterior glaze has gone from them
Other than discolouration which means they no longer match the Portland stone borders is this a bad thing? Will the slabs need resealing are they now damaged or likely to suffer more damage? They look quite brittle and porous now.
Today the other half with the best of intentions borrowed a Karcher and has 'cleaned' the slabs. They now are uniformly concrete grey and look like pumice, what I now assume to be a yellow exterior glaze has gone from them
Other than discolouration which means they no longer match the Portland stone borders is this a bad thing? Will the slabs need resealing are they now damaged or likely to suffer more damage? They look quite brittle and porous now.