1. Visiting from the US? Why not try DIYnot.US instead? Click here to continue to DIYnot.US.
    Dismiss Notice

Front Porch Lean to roof on timber posts

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

  1. Bouba

    Bouba

    Joined:
    27 Dec 2011
    Messages:
    264
    Thanks Received:
    3
    Location:
    Essex
    Country:
    United Kingdom
    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.
     

    Attached Files:

  2. ^woody^

    ^woody^

    Joined:
    3 Sep 2006
    Messages:
    26,665
    Thanks Received:
    3,303
    Location:
    West Mids
    Country:
    United Kingdom
    Make the roof structure as a cantilever (ie trusses), and the posts will be largely decorative not structural
     
  3. JohnD

    JohnD

    Joined:
    15 Nov 2005
    Messages:
    59,516
    Thanks Received:
    3,063
    Location:
    21st Century
    Country:
    Cook Islands
    You might also consider relaying the tiled floor (?of the porch?) so that water runs outwards.
     
  4. bouba123

    bouba123

    Joined:
    12 Jul 2019
    Messages:
    4
    Thanks Received:
    0
    Country:
    United Kingdom
    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
  5. ^woody^

    ^woody^

    Joined:
    3 Sep 2006
    Messages:
    26,665
    Thanks Received:
    3,303
    Location:
    West Mids
    Country:
    United Kingdom
    No. You design the roof with trusses, and these are secured to the wall and cantilever off the wall.
     
  6. bouba123

    bouba123

    Joined:
    12 Jul 2019
    Messages:
    4
    Thanks Received:
    0
    Country:
    United Kingdom
    sorry woody. Need to hold your hand here. A diagram would be good. i will buy you an e-beer.
     
  7. ^woody^

    ^woody^

    Joined:
    3 Sep 2006
    Messages:
    26,665
    Thanks Received:
    3,303
    Location:
    West Mids
    Country:
    United Kingdom
    [​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.
     
  8. Leofric

    Leofric

    Joined:
    9 Nov 2018
    Messages:
    1,503
    Thanks Received:
    123
    Country:
    United Kingdom
    or 100mm square timber posts .
     
Loading...

Share This Page