Restoring a Riven Slate Patio Suffering from Grout Haze in Wollaston June 29, 2017 | No Comments | Builder, grout haze, northamptonshire, Northants, patio, Riven, Slate, Tile Cleaning Activities, tiled, Wollaston, Work History [ad_1] This customer, who lives in Wollaston, a small village in Northamptonshire, called me to look at the unfortunate condition of her Riven Slate tiled […]