If the deck doubles as a porch it needs to be able to support no more than 80 psf.
Deck roof frame.
Weather you re building a shed roof or adding a dormer to your second story it is important to choose the proper size rafter.
Frame up a box the size of the outer dimensions of your deck using 2 by 4 inch lumber.
Extremely happy with this purchase.
We put it together in an hour really easy.
Unfortunately many homeowners who have a flat deck roof have to deal with frequent leaks.
Porch decks require 25 additional psf for roof loads for a total of 80 psf.
The frame is metal and the sunshade is moveable.
While a typical deck is designed to support 55 pounds per square foot psf a roof requires 80 psf of support.
Always try to match the house roof pitch angle and overhang for your shed roof.
How to build a shed roof over a deck.
This article discusses strategies for building over an existing slab patio or over a deck and offers links to articles about the specific tasks such as pouring the footings raising posts and so forth.
Some shed roofs are designed to be nearly flat.
Hardware and tools are included for assembly.
Many porches use 22 diameter corner and intermediate.
Installing a roof over an existing deck isn t recommended unless your deck was originally designed to support the roof.
For deck roof posts dig holes for the roof posts and pour cement to keep them secure.
Start here if you re building a roof over a patio or deck.
This sizing guide for roof rafters will help determine what you need for your small project.
This in depth section will teach diy builders to frame a deck from installing a ledger board and frost footings to framing the perimeter of the deck.
Typical decks are designed to support 55 psf lbs per square foot.
If you want to avoid problems and build a durable watertight deck pvc is the best material to use.
To solve this problem you can either replace your original deck footings to support your new roof or build your.
Flat roofs are more susceptible to leaking than pitched roofs.
As a result most decks have inadequate footings to support a new porch roof.
Then run joists connecting the front of your roof with the rear every two feet along the length of your roof.
If you are tying the roof directly to a house.
The footings for porch decks must be larger than deck footings.
This is usually because low quality leak prone decking materials such as epdm rubber are used often in an effort to save money.
There are several variables to consider when determining the proper rafter size.
Build the frame of the roof on the ground.
Shed roofs project as a single plane roof pitched away from the house.
The process of framing a deck includes creating connections between joists beams and support posts in order to build a code compliant deck structure.
