Owners manual

It is important that the floor be level and square.
Before nailing the flooring, measure the floor
diagonally (corner to corner). Then measure
the opposite corners. These measurements will
be the same if the floor is square.
2. Cut 2x4-10' floor joist to 9'-9". Treated lumber may be thicker than 1-1/2". Take this into
account when cutting the length of floor joists. Shorten joist measurements if necessary to
obtain 12'-0" building width.
X
X
X
X
X
X
16"15-1/4"
Joist Header
X
X
16"
1. Treated lumber is not cut to exact length. Cut (2) two 2x4-12' joist headers to 12'-0".
Layout for 16" on center joist spacing. 'X' marks where floor joist will be placed.
4x4-12' Treated Runners
Joist 9' - 9" Long
2x4-12' Joist Header
12' - 0" Building Length
Construction Details for Deluxe Floor System
Deluxe floors include 4x4 runners, standard floors do not
Check local building codes in your area, the construction may have to change. For a concrete slab,
install sill sealer as a moisture barrier between the concrete and the wall plates. Foam sill sealer can
be purchased at home centers in rolls 3-1/2" or wider.
10' - 0" Building Width
Material Description 10' x 12' shed
2x4 Joist Headers 2 pcs. 12'
2x4 Floor Joist 10 pcs. 10'
4x4 Treated Runners 3 pcs. 12'
Flooring 5/8" or 3/4" 4 pcs. 4x8
Screw Floor Nails 1 lb. 8d
Galv. Box Nails 1 lb. 16d