Floor Joist Sleeper

Avoid a sleeper layout where the boards are parallel to the joists but run between them because this configuration lacks structural support.

Floor joist sleeper.

If you re installing sleepers on a wood floor you can use untreated 2 by 4 lumber. You do this by using wood shims to create a perfectly level surface across the top of the entire joist system. Either line them up directly over the joists that lie beneath the subfloor or run them perpendicular to the joists. 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.

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. The sleeper is designed to prevent warping and mold growth which ultimately extends the life of your floor. Fasten the sheet with 2 1 2 inch coated screws every 6 inches along the walls and every 8 inches across the sheet.

The sleeper joists follow the same arrangement and spacing as the main home joists located under the subfloor. Joists on the ground floor were sometimes a pole pole joist half round joist log joist. Fasten the sleepers through the shims with powder actuated fasteners. Moisture barrier a moisture barrier must be used to to cover the concrete floor before you build or have someone build your subfloor sleepers.

The barrier is designed to keep ground water from rising through the concrete and ultimately.