Where local building codes allow this practice you can bolt a patio overhead s posts directly to existing deck beams joists or other heavy structural members.
Extending deck posts for roof.
How to make a deck post taller.
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.
Or you re down to the last post and it s not tall enough.
Maybe you forgot to measure twice and cut once.
So the extensions need to be flush so plates and other things protuding cannot be sticking out of the sides.
I am looking to extend my 4x4 corner posts on a deck to build a pergola over top of the deck.
Your deck space isn t limited by the current height of the posts.
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Make the front of the roof the height of the house roof you are presumably tying into with the rear sloping at a rate of six inches over two feet.
Perhaps you trimmed damage from one end of a post.
Or you can lag screw through post bases and decking into the top of a deck joist or beam.
Install post base connectors.
Many porches use 22 diameter corner and intermediate.
Typical decks are designed to support 55 psf lbs per square foot.
I also plan on sleeving those 4x4 s with a composite sleeve for the full length from the 4x4.
These are used to attach the support posts to the frame of the deck.
Porch decks require 25 additional psf for roof loads for a total of 80 psf.
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.
Building on an existing deck.
The footings for porch decks must be larger than deck footings.
As a result most decks have inadequate footings to support a new porch roof.
Whether you need to add a privacy barrier to the deck or want to add decorative detail you can achieve this by making the posts taller.
Before you begin make sure you re matching the house roof pitch angle and overhang for your roof.