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Core Drill 165mm-170mm?

  • 15-01-2024 11:43pm
    #1
    jasgrif11
    Registered Users, Registered Users 2 Posts: 436 ✭✭


    I recently purchased 2 X BSK Zephyr Single Room Heat Recovery vents. They require a 165mm hole for the duct. Is it possible to get a 165mm Core Drill (for hire)? I'd prefer a dry core so as not to cause too much of a mess to the existing interior, which is fully finished and painted, etc.



Comments

  • #2
    SC024
    Registered Users, Registered Users 2 Posts: 585 ✭✭✭SC024


    https://www.boards.ie/discussion/2058331475/core-drill-165mm-170mm

    Yes try local hire shops not sure if they will hire dry core but def will the wet core, You may have to buy the dry core set & maybe hire a good SDS drill for same. Dry core works better with block / brick, mass concrete with rebar the dry core will struggle especially at that diameter you may have to go with wet core. Also depending on wall thickness you may have to core in the depth of the bit & then break out 1st section & go again.



  • #3
    jasgrif11
    Registered Users, Registered Users 2 Posts: 436 ✭✭jasgrif11


    Have you seen dry core sets this size? If so can you share a link?

    How messy is the wet core, would it be advisable to do it from the outside? The issue is i’d need a scaffold tower



  • #4
    Calahonda52
    Registered Users, Registered Users 2 Posts: 12,514 ✭✭✭✭Calahonda52


    is it a cavity wall?

    “I can’t pay my staff or mortgage with instagram likes”.



  • #5
    jasgrif11
    Registered Users, Registered Users 2 Posts: 436 ✭✭jasgrif11


    Yes, 300mm (including 100mm fullfill Aeroboard Platinum)



  • #6
    SC024
    Registered Users, Registered Users 2 Posts: 585 ✭✭✭SC024


    https://www.boards.ie/discussion/comment/121626234#Comment_121626234

    yes try chadwicks or B & Q, If going with wet core yes do it from outside & have a hose ready to rinse wall down immediately afterwards



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  • #7
    Shoog
    Registered Users, Registered Users 2 Posts: 5,983 ✭✭✭Shoog


    Couldn't get one that size locally to hire in Leitrim. I could buy one from Screwfix but it would take days to arrive.

    In the end I did it with a ring of 2inch cores and chizzle. Messy but didnt end up taking much longer than a single core.



  • #8
    SC024
    Registered Users, Registered Users 2 Posts: 585 ✭✭✭SC024


    https://www.boards.ie/discussion/comment/121636113#Comment_121636113

    ah you got sorted is main thing. good stuff



  • #9
    TimHorton
    Registered Users, Registered Users 2 Posts: 1,066 ✭✭✭TimHorton


    https://www.boards.ie/discussion/2058331475/core-drill-165mm-170mm

    jasgrif11 How have the BSK Zephyrs worked out for you ?


    Post edited by TimHorton on


  • #10
    betterbuilt
    Registered Users Posts: 20 ✭betterbuilt


    Hi I'm facing same task - need to drill two 162mm holes for two vents 160mm, wondering if you had any advice on how to do the ring of 2inch cores and chisel!? I want to avoid damaging the exterior plasterwork and thinking maybe best option is to buy a 162mm core bit and hire a handheld core drill for the morning…

    Any advice welcome



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