DIY Barn Greenhouse

A well designed greenhouse lets you control the weather. That means you can grow food or flowers all year round. Many of the greenhouses we’ve shown are meant only to last two or three seasons, but this one is designed and built to last a lifetime. If you’re looking for a serious greenhouse model to base yours on, this could be it.


And remember, growing your own vegetables is not only good for you, it’s good for the environment too!


  • 3 pcs 2×4 10’ long Cedar Wood – for back wall
  • 5 pcs 2×4 12’ long Lumber – for sides/ridgepole; do not cut
  • 32 pcs 2×4 8’ long Lumber
  • 11 pcs 12’x26” Corrugated Plastic Greenhouse Panels
  • 1 pc 8’x26” Corrugated Plastic Greenhouse Panel – for door side
  • 3 pcs 12’ long Tin Panels – for sides and back
  • 1 pc 8’ long Tin Panel – for front
  • 28 pcs 4’ long Ribbing Strips
  • L Flashing – optional, for corners
  • Tin Screws
  • 3” Screws
  • Metal Gussets
  • Wood Glue


  • Measuring Tape
  • Square
  • Marker
  • Hammer
  • Drill
  • Circular Saw
  • Compound Miter Saw
  • Carpenter’s Level
  • Countersink Drill Bit
  • Safety Glasses
  • Hearing Protection

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Thanks to Ana White for this great project. You can get the step-by-step instructions here

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