X
X
X
X
X
X
16"
15-1/4"
2x4 Joist Header
X
X
16"
Nail 2x4 joist headers and
floor joist to 4x4.
It is important that the floor be level and square. Square the floor as follows: 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.
2x4 Floor Joist
spaced 16" o.c.
2x4 Joist Header
4x4 Treated Runners
Flooring
Outside Measurement
2.
Cut 2x4-12' floor joist to 11'-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.
1.
Cut (2) two 2x4 joist headers to 16' - 0". Layout for 16" on center joist spacing. 'X' marks
where floor joist will be placed.
Material Description
12' x 16' shed
2x4 Joist Headers
2 pcs.
16'
2x4 Floor Joist
13 pcs.
12'
4x4 Treated Runners
8 pcs.
8'
Flooring 5/8" or 3/4"
6 pcs. 4x8
Screw Floor Nails
2 lb.
8d
Galv. Box Nails
2 lb.
16d
16' - 0" Floor Length
12' - 0" Wide
Constructing 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.
