When installing exterior window trim (just some 1" x 4" boards), how do you fasten them to the house without hitting the windows nailing fin and weather proofing material on top of them?
For example, a vinyl window is installed into the frame with nails or screws through a fin that has holes in it. This sits on the exterior side of the frame. Then you put tape over it. I imagine when installing the exterior trim boards, you don't want to puncture the fin or the tape, but then I don't see how you can install the trim because the fin is at least 1" and the tape more like 4", but the trim board is only 4" wide.