Frame up a box the size of the outer dimensions of your deck using 2 by 4 inch lumber.
Build gable roof over deck.
Be sure to overlap the roofing felt 4 inches at all edges.
Step 1 build the frame of the roof on the ground.
How to build a roof over your deck.
Attach roofing felt to the plywood with roofing tacks.
Building a gable roof over your existing deck will make it more comfortable providing shade and shelter from the rain.
Gable roof the most common type of deck roof the gable roof forms a triangular shape projects along a ridge down the center of the deck and overhangs the enclosed space.
To provide for roof decking nail the sheeting pieces of inch plywood to the trusses.
Paint your gable roof as required.
Build a gable roof over a deck.
Nail the first boards on top of your wall where you plan to build your roof.
Then run joists connecting the front of your roof with the rear every two feet along the length of your roof.
How to build gable roof over deck porch.
This significantly sloped deck roof allows for proper drainage of rain and snow as opposed to a flat roof.
When you nail in the second boards offset the seams of the upper and lower layers by at least 24 in 61 cm.
A gable roof also blends in well with many types of architecture.
Porch decks require 25 additional psf for roof loads for a total of 80 psf.
Use 8 penny nails to attach the first 2 in 4 in 5 1 cm 10 2 cm board to the wall studs.
Next install the roofing drip edge and finish with roofing shingles.
Installing a porch roof over an existing deck is usually not recommended unless the deck was originally designed to support a future porch.