Working on preparing for insulation of an unfinished attic in a 1.5 story house. The rafters are currently 170mm and I would like to have 500mm of insulation in the ceiling. Most rafters are at cc 1200, but a few have cc 600.
My thought is if you could extend with, for example, a 195 beam that goes across the existing tie beam 4-5 pieces and then place a 170 beam in the same direction as the tie beam. To add beams where it is cc 1200, meaning the top layer all beams end up at cc 600. To get a less shaky floor in the attic space. It's only the attic space, which is basically not meant to be used. Maybe tongue and groove at cc 1200 is completely sufficient, meaning what I’m considering is overkill?
My thought is if you could extend with, for example, a 195 beam that goes across the existing tie beam 4-5 pieces and then place a 170 beam in the same direction as the tie beam. To add beams where it is cc 1200, meaning the top layer all beams end up at cc 600. To get a less shaky floor in the attic space. It's only the attic space, which is basically not meant to be used. Maybe tongue and groove at cc 1200 is completely sufficient, meaning what I’m considering is overkill?
