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Lean-to construction

  • 03-02-2025 11:18PM
    #1
    funnyname
    Registered Users, Registered Users 2 Posts: 1,817 ✭✭✭


    I'd like to add a lean-to to the 4x2m space to the side of the shed in the attached picture. It would probably be the biggest DIY project I've ever undertaken and I just wanted to check some things first.

    I would use the following:

    4 - Bolt Down Square Bracket for Pergola Posts Heavy Duty Hot-Dip Galvanised Post Fence Foot Base Support Size: 100mm x 100m

    4 - 100x100 mm, 3 m Rough Treated Timber for the corner supports

    sheets of corrugated plastic for the roof (over hang over the gutters so rain drains into them) and maybe clad it with them on the far 2m side.

    additional 4x2 and 2x1 to finish using the final picture as a template

    Is going from 9m height on the left side to 8m on the right side enough of a slope?

    Any suggestions?

    image.png

    lean-to.jpeg

    image.png


Comments

  • #2
    funnyname
    Registered Users, Registered Users 2 Posts: 1,817 ✭✭✭funnyname


    Hi Any suggestions, am I on the right track?



  • #3
    whizbang
    Registered Users, Registered Users 2 Posts: 2,033 ✭✭✭whizbang


    9 Metres ? I hope you mean 3M down to 2M !

    Its going to be difficult to prevent water splashing down or overflowing the gutter inside the lean to.

    Would you not go the other way - from the right down to lower on left, -thats if you can manage to low roof height.

    You could get away with 3 uprights, (and another for the door) but thats probably 6x2 timber for the support.



  • #4
    funnyname
    Registered Users, Registered Users 2 Posts: 1,817 ✭✭✭funnyname


    Yes 3m, was thinking about feet as well as meters when I wrote that, so thinking the drop would be about a foot left to right, is that enough?

    I get your point about the overflow, would putting a wider/deeper gutter in help that?



  • #5
    The Continental Op
    Registered Users, Registered Users 2 Posts: 8,270 ✭✭✭The Continental Op


    Leave the base of the posts in a bucket of clear preservative at least overnight before you bolt them down. The one place that will eventually rot is the post bases. Use something stinky and not water based ;-) Then every couple of years heavily coat around the top of the bases so you can see the preservative run down. That way they'll never rot.

    Wake me up when it's all over.



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