Question about a 2x6 wall header.
I will have an 8' opening in a load bearing wall to accomodate a window. I'm trying to figure out what size header I need. I am planning to use 2 2x10's with 2 1/2 rigid insulation sandwiched in between. Is this fine or do I need to use 2 2x10's with 3 1/2 plywood in between to form the header? I have found mixed reviews. Thanks.