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How would you go about cleaning a fiberglass roof that continuously grows a layer of mould. Could you treat it with a Hypo solution? Would this damage the roof in any way?
Never used hypo, use degreaser, sweep with stiff brush 1st. Good repeat business if you do a good job. @Green Pro Clean Ltd may know of something better
Are you talking flat roof fibreglass (painted) or car port type ?
I did this flat roof the other day, it was still damp from morning dew and it took 15 minutes - no chemicals.
I've also recently done a fibreglass car port - someone had jet washed it last time and it's destroyed the matting, I rinsed it with car shampoo and was amazed at the amount of strands that washed off - it didn't come up that well but I explained that it should never have been jet washed in the first place as it's now furry!