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Front Porch Lean to roof on timber posts

Discussion in 'Building' started by Bouba, 9 Aug 2019.

  1. Bouba

    Bouba

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    The front floor of the my door is tiled and i would like to put a open roof porch over it.It puddles whenever it rains.
    I intend to attach a header plate to the house wall, and attach 4x2 timber to do the lean to roof.

    My issue is how much weight is going to be on the front 2 posts.As the front of the door is tiled the 2 posts will not be secured on the ground but just held by the roof joists.Where would be the weight on the lean to roof. Is it on the posts or does the header plate takes it?

    The dimension of the total area to be covered is 1.6metre wide and 1 metre deep from the house wall.

    Basically a lean to roof on 2 stilts as per the picture.
    The picture is of apex roof and i wish to do lean to roof as it is easier.
    Thanks.
     

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  2. ^woody^

    ^woody^

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    Make the roof structure as a cantilever (ie trusses), and the posts will be largely decorative not structural
     
  3. JohnD

    JohnD

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    You might also consider relaying the tiled floor (?of the porch?) so that water runs outwards.
     
  4. bouba123

    bouba123

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    sorry bit lost here. Please could you elaborate woody. Do you mean a cross brace on the rafter resting on header plate.
    thanks.
     
    Last edited: 9 Aug 2019
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  6. ^woody^

    ^woody^

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    No. You design the roof with trusses, and these are secured to the wall and cantilever off the wall.
     
  7. bouba123

    bouba123

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    sorry woody. Need to hold your hand here. A diagram would be good. i will buy you an e-beer.
     
  8. ^woody^

    ^woody^

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    [​IMG]

    Here is the principle, and with additional brackets at the top to prevent rotation at the bottom rail, and perhaps the bottom bearing on the ledger plate similar to at the top.
     
  9. or 100mm square timber posts .
     
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