After that to make it flush with the roof of the existing house cut the two outer rafters.
How to attach a roof over a deck.
On a two story house you can usually tie the ledger into a band joist also called a rim joist located between the floors as shown below.
It provides shade and keeps your family dry during wet weather.
Tie your existing deck posts into the roof by extending your corner posts with the 4 by 4 lumber.
The posts should stack directly above a support post below and not within the span of a beam.
Frame up a box the size of the outer dimensions of your deck using 2 by 4 inch lumber.
Building on an existing deck.
Build the frame of the roof on the ground.
Be sure that the deck floor frame is at least as thick as the entire cross section of the post above and below.
If attaching a patio roof to a ledger beneath the eaves does not allow for enough headroom you can set the new patio roof s rafters on the wall s top plate.
Porch decks also require larger footings than deck footings.
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For deck roof posts dig holes for the roof posts and pour cement to keep them secure.
Make sure the frame has the appropriate blocking to ensure a solid connection.
Let the epoxy set leaving it overnight will assure that it is rock solid and then add the anchor bolt anchor washer and nut and tighten.
If the posts supporting the roofs are placed directly on the deck structure below there are a few considerations to make.
How to build a roof over a deck.
Most deck roofs require separate footings from the deck to support the weight of the roof throughout the seasons.
Building a roof over a deck turns this area into the best possible outdoor living space.
Check local building code to see if you can attach a patio roof directly to your deck.
Always check the local codes.
Adding a roof over a deck.
Building a shed roof over a deck.
It adds to the aesthetic appeal of the space.
You have to do it thoroughly so that the rafters sit flush on it.
Blow out the dust fill the hole with epoxy and insert the rod to the required depth.
There are many advantages to a roof over your deck such as.
Do not attach the post base to only decking.