Plywood Leveling Shims For Roof

In this video you ll see how you can do plywood subfloor leveling using the plywood sheets.

Plywood leveling shims for roof.

You can check this with a 6 to 10 foot piece of lumber or a long carpenter s level. You can fix this by adding shims onto the top rafters or chords to make a more level nailing base. I was going to install a hardwood floor 5 8 thickness but ther. Sheathing is supplied in 4 8 sheets and are designed to be installed onto rafters with 16 24 spacing.

3 cover the shimmed subfloor. Thoroughly cover all areas with one coat of primer to enhance adhesion of the leveling compound to the plywood surface. Usually they just use a single piece of 1 1 2 inch wide shim. The idea is to get it as supported as you possibly can and then use the 3 8 plywood to level everything out.

When using plywood to flatten the floor it s good practice to use a urethane adhesive to hold it in place. Measure the size of your room using a measuring tape. Glue and screw the plywood. Apply a latex floor primer to the entire plywood surface using a paint roller.

With a six foot shim in hand remove the 2x4 blank from the straight edge jig and set the jig aside. Measure the combined width of the jig and 2x4 blank making sure not to cut off the first few inches off the shim. All that the builders need to do is utilize a series multiple pieces of wood shims when leveling the main beams in order to reduce the pressure on the shims. Step 6 screw the sheets of 3 8 inch thick plywood over the shingles using a drill and 2 to 2 1 2 inch subfloor screws to attach them to the entire floor.

A single sliver of 1 1 2 inch wide shim will naturally crush under the weight of nearly any beam in a wood floor system. Use a brush for application in smaller areas. The end of a plywood or osb sheet should align with the rafters center and this is called breaking on center. Install shingles according to manufacturer s guidelines.

Shim the subfloor with shingles and plywood to bring it level in the same way you would if the slope was parallel to the board direction. Start with a level nailing surface whether you re using plywood or oriented strand board osb the first step in building a high quality roof is to make sure you have a level nailing surface. If the slope is greater than the thickness of three shingles then plywood should be used and you should step down with different thicknesses of plywood and shingles to even out the floor. 3 8 plywood is pretty stable to absorb the ridges.

Allow the primer to dry thoroughly.