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  1. J

    Increasing rafter pitch on lean to extension

    Suppose so, just don’t think it’ll look right. So birdsmouth is the only way to finish it on the wall plate? I take it the windows will need to be removed for the lead flashing to go down the sides and under neath with raising the pitch higher?
  2. J

    Increasing rafter pitch on lean to extension

    Cheers. Will have a little look in to what the inside will be like. What’s the simpler option?
  3. J

    Increasing rafter pitch on lean to extension

    Keeping the block and wall plate as I believe that’s needed. I’ve added a couple of sketches (If you can make it out lol) both side on, first one I believe is the normally way to do it, second is with a block cut down to 150mm but only having the seat cut. Basically trying to gain a couple of...
  4. J

    Increasing rafter pitch on lean to extension

    Sorry, any chippys our there got any idea ?
  5. J

    Increasing rafter pitch on lean to extension

    Hi, Probably be a quick yes or no! Looking to try and maximise roof pitch, have a lean to extension going in under current windows. So height of ledger plate is already set. We have a bi fold door going in with a catnic cavity lintel above. To match existing I’m going to finish with headers...
  6. J

    Rafter span for lean to extension

    Thanks both for your help! Just wanted to make sure it's possible for a lean to extension at that span/pitch as most I see are around 3 metres
  7. J

    Rafter span for lean to extension

    Struggling to find a span table to match what I'm after. Is it acceptable to work of a c16 flat roof joist table which states 50 x 175mm spans 3.81m on 400mm centres? Assuming this would be similar to a flat roof with a pitch of only 15 degrees
  8. J

    Rafter span for lean to extension

    Hi, First post here. Must say thanks to you all for helping me to renovate my house so far. I've tried looking through previous posts on this matter but struggled to get much clarity. The house is a small victorian cottage with tall sash type windows so height of extension is limited. So...
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