Installing Floor Joists For Second Floor

If you have sagging cracked or twisted joists which can happen in older houses this project will provide the extra support the floor needs.

Installing floor joists for second floor.

Measure the distance between the rim joists. Once the floor joists are in place it s time to install the subfloor which is typically 3 4 inch tongue and groove plywood or oriented strand board osb. Once you have done this you can replace or install your floorboards normally confident that you can rely on your joists to hold your floor together. This article provides step by step instructions and pictures on how to make structural repairs by sistering floor joists alongside weak joists.

The lengths should be the same because you took the time to make the sill plates square and parallel to each other cut the floor joists. The 2x12 lumber that i picked up a few weeks ago is perfect. You ll use the same size lumber to assemble the rim joists as you will for the main floor joists. Step 5 finishing up.

When installed properly joist hangers will keep your deck or floors sturdy and durable. The rim joist sits vertically on top of the sill plate along the outside of the frame to create a lip for the main floor joists. For most jobs 2 in 5 1 cm x 10 in 25 cm boards are an ideal size. These large 4 by 8 panels fit snugly together to form a structurally sound walking area on which to install the second story walls.

Repeat the process as many times as necessary to have joists at roughly 16 inch intervals underneath your floor. Put the floor joists on the layout marks on the sill plate.