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If your rotary roof ventilator leaks its most likely because of poor installation, a lot of people try to DIY install them. Installing a rotary roof vent whirlybird involves removing a roof tile or cutting a hole in a metal roof. When professionally installed they do not leak so you can be confident our installers know how to do a proper job. We seal your roof with the correct flashin... https://sites2000.com/story6148549/whirlybird


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