Hi,
I am about to replace the existing aluminum frame windows in my home with new construction vinyl windows with a nailing flange. I have read in a couple places that one should not nail the flange along the header, so as to allow for seasonal movement of the header. Some suggested bending a couple nails over the top flange. I have also read alot of manufacturers instructions and other resources that have made no mention of this. What is the consensus opinion of folks here, to nail the flange tight or not? I live in the wet but mild portions of the Pacific Northwest if that matters.
Neil