jiffypop805 14 Report post Posted March 6, 2018 what would be the steps to cleaning and applying some clear sealer on flagstone decrative rock on residential house? Thank you for any and all input Share this post Link to post Share on other sites
0 Beth n Rod 1,279 Report post Posted March 7, 2018 Flagstone isn't a good candidate for sealing. It is a shale rock which will continue to flake off due to the porosity of the stone allowing moisture to flow through it from below. Sealing the top is superfluous. As for cleaning, most likely, you are trying to get rid of mold and algae. A simple soap solution with bleach will work and then scrub with a stiff bristle brush. Then was with a power washer, 40 degree tip and from a distance of at least 6" from the surface to minimize flaking caused by the chisel effect of the pressure. Rod Share this post Link to post Share on other sites
0 JaxPressurePro 4 Report post Posted March 16, 2018 Great answer 1 Beth n Rod reacted to this Share this post Link to post Share on other sites
what would be the steps to cleaning and applying some clear sealer on flagstone decrative rock on residential house? Thank you for any and all input
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