Drilling through brick for cooker extractor

Discussion in 'Plumbing and Central Heating' started by scfc151, 19 Dec 2015.

  1. scfc151

    scfc151

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    Hi

    I recently had a new kitchen and plan to have the extractor fan vented outside. I have a flyover and want to keep the pipework invisable behind the stainless steel cover. I have bought a 90degree angled flat ducting kit that has a brick sized vent cover.

    Im wondering what is the best way to try and ensure I can chisel out a full brick so the cover fits in nicely. My plan was to first drill a hole from the inside out where the middle of the square pipe would go through as a reference point. Im just thinking if this centre point doesnt sit in the middle of a brick (which is 99% likely) what is the best way of doing this?

    Is there any flexible piping i can attach from the extractor to the vent cover so there can be a slight bend if needed?

    Thanks
     
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  3. flameport

    flameport

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    You can't.
    Even if you manage to remove a whole brick on the outer leaf, the bricks on the inner leaf will not be in line with it.

    The usual method is to use a core drill to cut a 110mm round hole, and use 100mm round ducting. Much quicker and neater than chiselling out whole bricks.
    If you don't have a core drill, hire one or find someone to cut the hole for you.
     
  4. scfc151

    scfc151

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    The inner leaf is block work as it is a new build kitchen extension. The reason I wanted a square ducting is that I could keep it compact as possible and hide the pipework.

    When I offered up round tubing the bend to get a 90degree angle meant the pipe would just be visbale above the flyover
     
  5. London Mike 49

    London Mike 49

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  6. scfc151

    scfc151

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    Thanks mike they look ideal. Im just thinking how I get a low profile 90degree angle off the extractor to start. Then I could use what you have shown to get through the cavity and outside. Is there a piece that converts square to round pipe?
     
  7. London Mike 49

    London Mike 49

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  8. scfc151

    scfc151

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    Excellent just need to get my hands on a core drill now thanks
     
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