Floor Joist Sleeper

A round timber with one flat surface and in barns long joists were sometimes supported on a sleeper a timber not joined to but supporting other beams.

Floor joist sleeper.

Either line them up directly over the joists that lie beneath the subfloor or run them perpendicular to the joists. Fasten the sleepers through the shims with powder actuated fasteners. However because the subfloor may have dips or depressions you have to level out the sleeper joists before attaching them. Caution wear eye protection hearing protection and a dust mask when cutting lumber or composite material.

Fasten the sheet with 2 1 2 inch coated screws every 6 inches along the walls and every 8 inches across the sheet. Step 3 start underlayment set the first sheet of underlayment tongue to the wall with the long side perpendicular to the sleepers and 1 2 inch from the wall. The sleepers are short pieces of lumber that ll connect the side joists to the double end joists adding support. If you re installing sleepers on a wood floor you can use untreated 2 by 4 lumber.

The barrier is designed to keep ground water from rising through the concrete and ultimately. You do this by using wood shims to create a perfectly level surface across the top of the entire joist system. Joists on the ground floor were sometimes a pole pole joist half round joist log joist. Avoid a sleeper layout where the boards are parallel to the joists but run between them because this configuration lacks structural support.

The sleeper joists follow the same arrangement and spacing as the main home joists located under the subfloor.