Posted: Thu Sep 13, 2012 5:47 pm
had some sandstone paving laid 6 months ago, initially had some effloresence issues and that has vastly improved over the summer, however there is one point in the paving that the rain does not run off (poor workmanship when laid) and the water collects and now i have a dark red type appearance on the stones in this area and also the grout/mortar. can anybody help?