Fixing pergola posts

Discussion in 'Landscaping and Outdoors' started by HappyDoingNowt, Jun 10, 2021.

  1. HappyDoingNowt

    HappyDoingNowt New Member

    Patio has been down 20 years and is slabs laid on sub base and sand, no cement.

    I want to fix to pergola posts to the patio and was thinking of lifting two slabs, digging out 10cm depth and relaying the two slabs on cement. I would then drill through the slabs and cement to attach the post fixing brackets.

    Does this sound ok or mad?

    Cheers
     
  2. spannerw

    spannerw Active Member

    As you are planning on lifting the slabs anyway, I would dig down and concrete post straight in. Much stronger than fixing bracket.
     
  3. HappyDoingNowt

    HappyDoingNowt New Member

    If I do that then it’s a job of getting hold of a saw to fit the tile back in which is why I though the bolt down bracket would be easier for my limited skill set.
     
  4. chillimonster

    chillimonster Screwfix Select

    i would have gone for digging 2 ft hole, ahh spannerw said it 1st.
     
  5. spannerw

    spannerw Active Member

    Do you own a 4 1/2” angle grinder? If so just buy a stone cutting disc. Cheap enough.
     
  6. chillimonster

    chillimonster Screwfix Select

    most people cut the square hole with an angle grinder. Have a look at what the water board
    do when there is the water meter set in the pavement.
    I hear what you're saying with experience and available tools.
    Pergola are more stable than a fence post but I have seen strong winds pull fence posts
    that have been bolted to spurs.
     
    HappyDoingNowt likes this.
  7. HappyDoingNowt

    HappyDoingNowt New Member

    no, but I’ll look into that. Thanks
     
  8. HappyDoingNowt

    HappyDoingNowt New Member

    Thanks for the advice. Dug 2 foot holes and concreted posts in and looks a proper job

    Can I also ask about joining main side beams to post. The side beams are 5x2 and the posts are 90x90.

    Are coach bolts the best fixing and if so, what diameter should I get.

    Thanks
     
  9. chillimonster

    chillimonster Screwfix Select

    One of the first I did I used 8" bolts, probably 10mm. Saw it this morning,
    customer still happy.
     
    HappyDoingNowt likes this.
  10. HappyDoingNowt

    HappyDoingNowt New Member

    Cheers
     

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