Install the purlin along the house and the outer purlin.
Pitched roof under deck.
Once you have your beams in place everything above them joists deck boards balusters and handrails is the same as for any other deck.
Porch decks require 25 additional psf for roof loads for a total of 80 psf.
Installing a porch roof over an existing deck is usually not recommended unless the deck was originally designed to support a future porch.
The minimum pitch for a standing seam metal roof is 1 4 or 3 inches rise to 12 inches run.
Then stretch a string between them.
Instead a pair of beams rest on supports called sill plates to create a frame for the deck.
The project illustrated here was a complete teardown and rebuild so i framed the roof with 2x8s spaced on 16 in.
A deck on a sloped roof requires a different approach to the framing underneath the joists.
Whenever i install decking over a roof i make sure the framing is structurally sound and properly pitched to drain water.
If the span under your deck is 12 ft for example the purlin at the outer end of the deck should be 3 in.
Typical decks are designed to support 55 psf lbs per square foot.
Summer calls for sultry nights under the stars and sun drenched cocktail gatherings making the backyard deck the ultimate destination this season.
Roof deck framing unlike for decks at ground level doesn t entail a ledger attached to the rim joist of a house.
Lower than the purlin along the house 12 x 1 4 3.
The minimum pitch for shingles is 1 6 which is equivalent to 4 inches rise to 24 inches run.