How to build a carport roof

Written by danny donahue
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How to build a carport roof
Empty carport (Jupiterimages/Stockbyte/Getty Images)

If you have an open carport and want to protect your vehicles, it's not that hard to build a roof for your carport.

Things you need

  • Gloves
  • Safety glasses
  • 300 cm (10 foot) stepladder
  • 120 cm (4 foot level)
  • Tape measure
  • 2 treated posts 150 mm by 150 mm by 360 cm (6 inches by 6 inches by 12 feet)
  • 2 treated posts 150 mm by 150 mm by 300 cm (6 inches by 6 inches by 10 feet)
  • 4 treated boards 60 mm by 305 mm by 480 cm (2 inches by 12 inches by 16 feet)
  • 32 hot galvanised wood screws 75 mm (3 inches)
  • Drill with Phillips bit
  • Box of 25 mm (1 inch) self-tapping screws
  • 1460 cm (48 feet) of weatherstripping
  • 4 pieces of corrugated aluminium siding 180 mm by 480 mm (4 feet by 16 feet)
  • 12 bags concrete mix
  • Water supply
  • Round-point shovel

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  1. 1

    Measure and mark off the four corners at 480 cm (16 feet) apart. Use the shovel and dig out these footer holes 90 cm (3 feet) deep.

  2. 2

    Pour 1 bag of concrete into each hole and add the recommended amount of water. Let it set up for 24 hours.

  3. 3

    Lay out the two long posts at the front footer holes and connect them with one of the 480 cm (16 foot) boards, using 75 mm (3 inch) screws. Place three through the end of the board and into the post, and repeat this at the other end.

  4. 4

    Lay out the two shorter posts at the footers on the back side. Connect them with a board using the 75 mm (3 inch) screws.

  5. 5

    Raise both sets of posts up into their footers and connect the side boards using the 75 mm (3 inch) screws. Use the level for this step to be sure to get all four posts plumb.

  6. 6

    Align one of the pieces of aluminium siding from front to back on the top of the frame. Secure the roof to the frame using the drill, Philips bit and self-tapping screws. Run a screw into the frame every 100 mm (4 inches).

  7. 7

    Run a piece of weatherstripping to the raised edge on the inside edge of the siding. Lay another piece of siding overlapping the first. Secure the new piece of siding to the first piece and the frame with the 25 mm (1 inch) screws, running them at 100 mm (4 inch) intervals. Repeat this process with the remaining siding pieces.

  8. 8

    Pour two bags of concrete into each footer hole to secure the posts into the ground. Add the recommended amount of water to each. Let it set up for 24 hours.

  9. 9

    Fill in the holes with dirt.

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