Hi ctb Most of the stains are originating from the mortar joins. You could try painting the coping again paying special attention to the joins. However these are likely to crack and in time you will have the same problem. Regards S
Would it help to try and seal it with PVA Bond/Sealer first do you think? And should I use masonry paint or exterior tile paint for the longest lasting finish?
Hi ctb You could try pva but use the exterior grade. I would suggest masonry paint but try to find one which,claims to have some flexibility. Regards S
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