I do alot of Cabins in the South, where the Temperature is quite different than were you are, but i have been using Perma-Chink products for about six years. I think they are some of the best on the market! They stand behind what they sell. As far as brushing out the product, we pretty much spray our Cabins with an Airless Sprayer and backbrush as needed. It sounds like you are going to brush the whole Cabin? Am i right? I agree with Beth on the perma-chink deck stain, although, they have come out with a new product for Decks, i used it on a job this past summer in Cincinnati, and the application was great, looked fantastic, but i don't know anything about how it will look or hold up long term! As far as the Ipe decking, i've never sealed one of those! Good Luck, and Happy New Year!!!!!!!!!!!!!!!!