Plywood Leveling Shims For Roof

When using plywood to flatten the floor it s good practice to use a urethane adhesive to hold it in place.

Plywood leveling shims for roof.

You can fix this by adding shims onto the top rafters or chords to make a more level nailing base. 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. 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. Allow the primer to dry thoroughly.

Apply a latex floor primer to the entire plywood surface using a paint roller. Glue and screw the plywood. Use a brush for application in smaller areas. 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. Measure the size of your room using a measuring tape. You can check this with a 6 to 10 foot piece of lumber or a long carpenter s level. Measure the combined width of the jig and 2x4 blank making sure not to cut off the first few inches off the shim.

Thoroughly cover all areas with one coat of primer to enhance adhesion of the leveling compound to the plywood surface. I was going to install a hardwood floor 5 8 thickness but ther. In this video you ll see how you can do plywood subfloor leveling using the plywood sheets. 3 8 plywood is pretty stable to absorb the ridges.

3 cover the shimmed subfloor. Cut sheets of 3 8 inch plywood to size with a circular saw to cover the entire floor. 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. Sheathing is supplied in 4 8 sheets and are designed to be installed onto rafters with 16 24 spacing.

With a six foot shim in hand remove the 2x4 blank from the straight edge jig and set the jig aside. 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. The end of a plywood or osb sheet should align with the rafters center and this is called breaking on center. Mark the thick end of the 6 ft shim onto the thin end of the blank butt the ends together and scribe.

Usually they just use a single piece of 1 1 2 inch wide shim.