Pitched Roof Under Deck

Then stretch a string between them.

Pitched roof under deck.

The minimum pitch for shingles is 1 6 which is equivalent to 4 inches rise to 24 inches run. For those who desire a bit more shade and privacy while soaking up the rays however a deck roof may be in order. Summer calls for sultry nights under the stars and sun drenched cocktail gatherings making the backyard deck the ultimate destination this season. 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. The minimum pitch for a standing seam metal roof is 1 4 or 3 inches rise to 12 inches run. Typical decks are designed to support 55 psf lbs per square foot. Roof deck framing unlike for decks at ground level doesn t entail a ledger attached to the rim joist of a house.

Instead a pair of beams rest on supports called sill plates to create a frame for the deck. Centers supported by a beam and a ledger as on most decks. Installing a porch roof over an existing deck is usually not recommended unless the deck was originally designed to support a future porch. Lower than the purlin along the house 12 x 1 4 3.

A deck on a sloped roof requires a different approach to the framing underneath the joists. Once you have your beams in place everything above them joists deck boards balusters and handrails is the same as for any other deck. The project illustrated here was a complete teardown and rebuild so i framed the roof with 2x8s spaced on 16 in.