How To Build A Deck Roof

Have you ever wondered how to build a deck roof? Building a deck roof can be a simple process as long as you have moderate knowledge of construction and the right tools. Deck roofs are used to provide shade and shelter for those who enjoy sitting outside. Some people don’t use deck roofs, while others enjoy them for the shade and shelter they provide from the weather.


  • Shovel
  • Post hole digger
  • Cement
  • Water
  • Carpenter’s level
  • Lag bolts
  • 2-by-8’s
  • 4-by-4’s
  • Tape measure
  • 2-by-8 brackets
  • Hammer
  • Roofing nails
  • ¾ inch plywood
  • Tar paper
  • Staple gun
  • Roll roofing
  • Bucket of tar
  1. Use the shovel or post hole digger to dig the holes where you are putting the 4-by-4’s. Pour the cement in dry and add 1 ½ gallons of water for every bag of cement you use. Mix the water and cement together until they form a peanut butter consistency.
  2. Check the 4-by-4’s to make sure they are square and plumb by using the carpenter’s level. "Plumb" means they are straight up and down.
  3. Use the lag bolts to attach a 2-by-8 to the house. The 2-by-8 should be up against the house or lateral with the house. Use the 2-by-8’s to frame the outside of the deck roof.
  4. Use the tape measure to measure every 16 inches all the way across. Using these intervals, place the 2-by-8 brackets against the house.
  5. Measure from the bracket to the front side of the house where you are putting the deck roof. Measure all the way across and make sure to put three nails in each 2-by-8.
  6. Lay the plywood. Start laying it from the top of the deck and work your way to the bottom. Offset the seams. Offsetting means to not run the boards straight. To promote drainage, slant the roof.
  7. Roll out the tar paper. Using the staple gun, staple the tar paper to the roof starting from the bottom of the deck roof.
  8. Roll out the roll roofing. Put some tar on the seams that were just laid down. Use the roofing nails and the hammer to nail the roll roofing down.
  9. Repeat step eight. Doing so will keep the deck from leaking. Also, make sure to put tar on the edge of the deck roof.


  • Have another person there to help or it will take longer.
  • Wear safety glasses.

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