5 attach sub fascia.
How to support a roof deck.
Another great thing about installing a roof over your deck is that you can personalize it to match your style and tastes.
6 decking your roof.
Designing the deck roof.
For deck roof posts dig holes for the roof posts and pour cement to keep them secure.
I have a client who wants a deck built approximately 10 off the ground with a roof.
However this calculation can vary depending upon what you plan on.
4 setting the rafters.
While a typical deck is designed to support 55 pounds per square foot psf a roof requires 80 psf of support.
Covered decks can be made with either stand alone roofs or when the deck is adjacent to a building with a roof connected to the building.
A 1 5 inch thick rim joist cannot support a 3 5 inch thick post above.
Adding a roof over an existing deck.
Place pier blocks so that the posts will be against the inside of the support frame.
To avoid any modifications to the existing deck below or to facilitate future replacement of the deck below the roof the roof can also be designed independently from the deck.
3 building the support beam.
Blocking must be installed adjacent to the rim joist.
Pictures of roofs over decks.
How do you build a roof over a deck.
When bolting to the deck s structure be sure to use heavy duty galvanized lag screws that are long enough to penetrate the deck s framing by at least 2 inches.
7 roof felt and shingles.
2 fix these support posts to your decks original support frame bolts work well.
To safely install a roof deck the roof needs to be able to support about 55 pounds of weight per square foot in general.
This is where the real planning began as the design of the roof would drastically effect the appearance of the finished deck.
2 setting your ledger board.
Porch decks also require larger footings than deck footings.
In some situations you may be able to use the home s structure to support an overhead above a deck.
If the deck doubles as a porch it needs to be able to support no more than 80 psf.
20 6x6 pt posts would be long enough to use as both deck support and roof support but the expense isn t justified because all that is needed to support the roof would be 4x4s.
If you like the idea of having the roof above your house s roof you need to make sure the support posts are within 4 feet or so of the original gutter on that side.
Installing a roof over an existing deck isn t recommended unless your deck was originally designed to support the roof.
Most deck roofs require separate footings from the deck to support the weight of the roof throughout the seasons.
