I used protectowrap when I installed my windows (new const.) I applied it to the plywood first set the window in place and wrapped the outside flange again. The house hasn't had siding on it for 3 months and all the elements, Snow, Flooding rains, and ice has not penetrated the seal in anyway. Great stuff, and easy to work with you actually get a couple of seconds to pull it off and reapply if you need to adjust. Also about half the Price of Grace.
9out of9found this review helpful.
Review 2 for BT25XL Window & Door Sealing Tape Roll Size 6 in. x 50 Ft.