How to Build a Patio Cover. A patio cover can be a nice addition to your home and can be useful as a functional piece of furniture. It can also protect your house by not allowing the heat of the sun to beat into nearby windows and it can provide a solace of sorts where you can relax. The following steps will enable you to build such a sanctuary in your own backyard.

Step 1

Establish the pitch of your roofline and the size of your patio cover.

Step 2

Set the post base using the concrete anchors.

Step 3

Put the 4-by-4 posts on the post base and then nail to the post base.

Step 4

Create the support beam by setting the double 2-by-12 boards into the roofline.

Step 5

Mark off your rafters at 2 feet on center.

Step 6

Follow the design of the roof pitch and cut rafters and tails.

Step 7

Cut your ridgeline and set rafters in place. This will take 2 people.

Step 8

Place a block in between rafter tails. Every third rafter drill 3 1½-inch holes in the center.

Step 9

Measure a piece of the metal screening and staple it to the inside of each block previously drilled with 1½-inch diameter holes.

Step 10

Install 5/8-inch roof decking. This will take 2 people.

Step 11

Fix and install flashing where the existing roofline and patio roofline intersect.

Step 12

Take the tarp paper and install on roof. Leave a minimum of a 6-inch overlap. Start at the bottom and work your way up. Overlap 6 inches on both sides.

Step 13

Put in drip edge and install shingles and start at the bottom of the roof.

Step 14

Overlap shingles per manufactures instructions.

Step 15

Install roof jack 2 feet on either side down from ridgeline.

Step 16

Finish the underside of the roof by installing sheathing to it.

Step 17

Wrap post base with 1-by-6 boards, cut to length and wrapped close to base.