Barn Loft and Floor Construction Techniques

A barn loft makes better use of the space in under roof. Includes images of framing details from different perspectives. This approach works for any building with posts. If you need a floor, then you have two options. The two options are concrete or wood. Concrete is the most durable, but it is more expensive and requires some experience. Barn lofts are simply elevated floors; you can rule out concrete as an option. For our purpose we will consider a wooden floor in a small 10 x 20 building.

Barn Loft and Floor Framing Details

  • Establish a level mark on each post.
  • Nail on 2 x 10 bands from post to post on the 20′ sides.
  • Lay out the bands on 24″ centers (first mark 23 1/14″).
  • Square each mark down and put an “X” on the side the joist will set.
  • Mark 7 1/4″ down at each mark for the ledger strip.
  • Nail on a 2 x 2 ledger strip with three 16d or 12d coated nails under each joist.
  • You can now measure and cut the 2 x 8 joists. If there is a little difference from one side the other, then you may want to change the measurements a little as you go.
  • Nail on the joists with three 16d or 12d coated nails toe nailed into each side of the joist.
  • Make sure you turn the crowns up when running joists. Find the crown by sighting down the board and noting which way the arch is.
  • Use 3/4″ x 4 x 8 plywood for the flooring. Glue each joist with construction adhesive and nail the plywood every 6″ in the breaks and 8″ in the fields with 8d ring shanked nails.

Barn Loft | Floor Construction

Better diagrams are coming soon. Thank you for reading Barn Loft!