How to Build an Outdoor Room

What You Need: Tools

empty structure outside

  • Tape rule
  • Hammer
  • Posthole digger (if placing on concrete piers)
  • Builder's level ( 4-feet or longer)
  • Trenching shovel
  • Carpenter's pencil
  • Angle square or combination square
  • Portable circular saw
  • Table saw
  • Wood chisel (1 inch or larger)
  • Drill with 3/16- and 3/8-inch bits
  • Drill bit, 12 inches long, 1/4 -inch diameter
  • Ratchet driver with 9/16-inch socket
  • 12-inch power miter saw
  • No. 2 Phillips screwdriver or driver but
  • Two stepladders (8 feet)
  • Paintbrushes

What You Need: Materials

building a room instructions--parts diagram

  • 12 wood stakes (18 -- 24 inches long)
  • Four cardboard tube concrete forms, 12-inch diameter, 4 feet long*
  • 20 bags ready-mix concrete, 80 pounds each*
  • Four metal post base brackets with fasteners*
  • 1 cubic yard crushed rock or pea gravel
  • 12 pieces 1X4 (nominal) cedar, 8 feet long (for window frames)
  • Three pieces 4X4 (nominal) pressure-treated pine, 8 feet long (for part A)
  • 22 pieces 4X4 (nominal) cedar, 8 feet long (for parts B - L)
  • Two pieces 2X4 (nominal) cedar, 8 feet long (for part M)
  • Two barn sash windows (22X29 inches) or equivalent (optional)
  • Three barn sash windows (22X41 inches) or equivalent (optional)
  • One package 5d (1 3/4-inch) galvanized finishing nails
  • Thirty 3/8X6-inch lag screws with flat washers
  • One package No. 10X3-inch deck screws
  • 10 sheets corrugated galvanized steel roof panels, 25X72 inches
  • One galvanized cap/ridge flashing, 8 feet long
  • One package washer-head screws (for metal roof panels)
  • One package No. 6X1 5/8-inch deck screws
  • 1 gallon exterior-grade clear wood sealer (or semitransparent stain)

*Optional: recommended for high wind areas or where required by code.

Continued on page 2:  How to Make It