In most cases larger footings and sometimes more footings are required for a roofed deck.
Adding roof on deck.
The most common styles are gable hip and shed.
Some shed roofs are designed to be nearly flat.
Building a shed roof over a deck.
5 8 osb is applied on top of the felt paper and 1x6s to make sure no roofing nails penetrate the 1x6 or shadow gaps.
Roof and wind loads created by adding a roof.
Without proper planning adding a roof to an existing deck can create an unsafe situation.
Porch decks require 25 additional psf for roof loads for a total of 80 psf.
Black roofing felt accentuates the shadow gaps from below.
As a result most decks have inadequate footings to support a new porch roof.
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Blow out the dust fill the hole with epoxy and insert the rod to the required depth.
Adding a roof to your deck is best done as the deck is being built.
For those who desire a bit more shade and privacy while soaking up the rays however a deck roof may be in order.
Flat roofs are more susceptible to leaking than pitched roofs.
How to build a shed roof over a deck.
A regular deck can support a certain amount of weight per square foot but a deck roof adds a lot of weight and requires support.
Typical decks are designed to support 55 psf lbs per square foot.
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Always try to match the house roof pitch angle and overhang for your shed roof.
His low cost easy to build system catches the water that drips through the deck boards and redirects it to the outside of the deck.
One of our readers rune eriksen sent us photos of his design for a home built deck drainage system and we were impressed enough to check it out.
As beautiful as they are functional the modern deck roofs are an extension of and not a deterrent from the luxurious deck.
The roof deck is 1x6 attached to the top of the rafters with 1 4 inch space between boards.
Consider including an ice and water barrier too.
Many porches use 22 diameter corner and intermediate.
Have no fear though.
Post base connectors.
If you choose to add a roof to an existing deck you may need to add additional supports so it can hold the weight of the roof.
The footings for porch decks must be larger than deck footings.