big spacious light empty attic room under construction and renovation. mansard floor and ceiling insulation with rock wool. fiberg

apartment architecture attic balk barrier beam big brick building carcass carpentry ceiling cold concrete construction design development diy drywall empty estate fiberg fiberglass floor frame framework heatinsulation house improvement insulation interior light loft log lumber mansard plank plywood property renovation repair residential rock rockwool roof roofing room space spacious staff structure under unfinished wall walls windows wood wooden woodwork wool