Hypo it, the problem with biocides is they don’t last long enough. After some rain, and more rain, and a winter, there isn’t going to be any more biocode on that roof!Hypo will do an instant job, and has the same residual effects as a biocide to be perfectly honest. I.e untill the weather washes it away…
Quote from: zesty on June 15, 2021, 02:26:44 pmHypo it, the problem with biocides is they don’t last long enough. After some rain, and more rain, and a winter, there isn’t going to be any more biocode on that roof!Hypo will do an instant job, and has the same residual effects as a biocide to be perfectly honest. I.e untill the weather washes it away…what hypo percent mix would you suggest same as walls or stronger