QUESTION: I’m building a shed roof addition off of my house. I want to build the (one) bearing wall directly on the 2 X 8 floor joists and then put the addition under roof before I put down the subfloor. Is there any reason I shouldn’t do this? I plan to rip a piece of 3/4″ plywood to put under the bottom plate of the stud wall.
The addition will be on a crawl space and won’t have access from below.
The reason I want to do it in this sequence is because I’m insulating the floor and when I built the main house structure the insulation got wet and I had to pull the floor up and replace the insulation. Since I’m working by myself I won’t be able to get the roof up very quickly and so I want to delay insulating the floor until it’s protected.