Floor Joist Sleeper

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.

Floor joist sleeper.

Either line them up directly over the joists that lie beneath the subfloor or run them perpendicular to the joists. Caution wear eye protection hearing protection and a dust mask when cutting lumber or composite material. 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.

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. However because the subfloor may have dips or depressions you have to level out the sleeper joists before attaching them. Joists left out of an area form an opening called a well as in a stairwell or chimney well.

You do this by using wood shims to create a perfectly level surface across the top of the entire joist system. The sleeper joists follow the same arrangement and spacing as the main home joists located under the subfloor. 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.

Moisture barrier a moisture barrier must be used to to cover the concrete floor before you build or have someone build your subfloor sleepers.