How to Build a Treehouse Roof


A roof for the tree house can mean your children get to play in it even in wet weather. Good tree-house roofs are as inexpensive as possible while maintaining safety, keep the elements off and are as lightweight as you can make them. A corrugated plastic cover for the roof of your tree house fits all of these requirements, with the added benefit of creating a dramatic drumming noise when the rain falls heavily.

Things You'll Need

  • Filtering face mask
  • Safety goggles
  • Measuring tape
  • Corrugated plastic
  • Power saw
  • Power drill with screwdriver bits
  • Wood screws, 2 inches long
  • Measure the length and width of the open top of your tree house. If the tree house has an angled top, measure each side individually and follow these instructions twice -- once for each side of the roof.

  • Cut a corrugated plastic sheet to match the dimensions of the open top of your tree house, plus 1 or 2 inches on each side. This overlap will help protect the walls, windows and doorway. Wear a face mask and safety goggles during this step -- the sawdust from corrugated plastic can be pretty nasty.

  • Set the plastic sheet on top of the tree house, overlapping it evenly on each side.

  • Screw the corners of the corrugated plastic onto the top corners of the tree house using wood screws.

  • Reinforce your roof mounting with a line of wood screws along the top of each wall. Space the screws about 6 inches apart, adjusting spacing if the wall structure is irregular.

Tips & Warnings

  • If you're using two corrugated sheets for a peaked roof, you'll need to seal the gap between them at the top. Expanding foam caulk is an inexpensive, if not very attractive, option.
  • Exercise all due caution and common sense when working on a tree house that's mounted up in a tree. Use a ladder and, if possible, a safety harness.

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  • "Step by Step Basic Carpentry"; Ben Allen; 1997
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