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UK diy (uk.d-i-y) For the discussion of all topics related to diy (do-it-yourself) in the UK. All levels of experience and proficency are welcome to join in to ask questions or offer solutions. |
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Minimum diameter for cooker extractor pipe
Hi,
I am going to be hiring a core drill, 6 inch diameter to "pop" a ventilator through a wall. While I am hiring the baby my thoughts turn to "popping" a vent above the cooker extractor that currently blows back into the kitchen and gives me a cold breeze down my neck. So, what's the minimum diameter whole I need for the cooker hood vent? I want to keep the hole as small as possible (2-inch?) since the rash of holes in the wall due to installation of combination boiler flues make me worry for the wall's structural integrity. Clive |
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Minimum diameter for cooker extractor pipe
Clive Long,UK wrote:
Hi, I am going to be hiring a core drill, 6 inch diameter to "pop" a ventilator through a wall. While I am hiring the baby my thoughts turn to "popping" a vent above the cooker extractor that currently blows back into the kitchen and gives me a cold breeze down my neck. So, what's the minimum diameter whole I need for the cooker hood vent? I want to keep the hole as small as possible (2-inch?) since the rash of holes in the wall due to installation of combination boiler flues make me worry for the wall's structural integrity. Clive 50mm (2 inch) nothing like big enough. 150mm (6") would be more like it. |
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Minimum diameter for cooker extractor pipe
BillR scribbled :
50mm (2 inch) nothing like big enough. 150mm (6") would be more like it. My Neff extractor had a 5" (125mm) outlet on top to which I ran 5" flexible ducting to a vent. -- Gary Please remove #NOSPAM# if replying via email |
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Minimum diameter for cooker extractor pipe
On Sun, 30 Nov 2003 19:31:29 -0000, "BillR"
wrote: 50mm (2 inch) nothing like big enough. 150mm (6") would be more like it. Plastic cooker hood venting tube is usually 100mm diameter (a rectangular section of appropriate dimensions is also available). You'd normally drill a hole of 110mm or 117mm to put the tube through - 150mm is going to be rather large! Not forgetting that when you drill a large hole in brickwork I would assume it weakens the structure. How much (or little) of a problem that actually is I wouldn't know - but to be on the safe side I would always plump for the smallest hole possible, especially if it is a load bearing wall. PoP |
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Minimum diameter for cooker extractor pipe
Not forgetting that when you drill a large hole in brickwork I would
assume it weakens the structure. I would be interested in hearing what the experts think of this as I have just installed a Bosch cooker hood which required a 150mm hole through the outside wall. Does a 150mm hole really affect the walls structural integrity??? Thanks, Bill |
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Minimum diameter for cooker extractor pipe
On Mon, 1 Dec 2003 11:45:01 -0000, "Bill Gardener"
wrote: I would be interested in hearing what the experts think of this as I have just installed a Bosch cooker hood which required a 150mm hole through the outside wall. Please bear in mind that this isn't something I'm clued up about - I'm just working on the principle that a "whole" wall without a hole in it might be a bit stronger than a "whole" wall with a bit missing Does a 150mm hole really affect the walls structural integrity??? I'm interested to know the answer too! PoP |
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Minimum diameter for cooker extractor pipe
Bill Gardener wrote:
Not forgetting that when you drill a large hole in brickwork I would assume it weakens the structure. I would be interested in hearing what the experts think of this as I have just installed a Bosch cooker hood which required a 150mm hole through the outside wall. Does a 150mm hole really affect the walls structural integrity??? Thanks, Bill As most kitchen extractor fans require a 150mm hole (as opposed to toilet fans which are 100mm) I would hope not. About the same as removing a standard brick? |
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Minimum diameter for cooker extractor pipe
Bill
My concern is not a single hole in a wall, I'm sure the circular profile helps distribute the load around the hole, the concern is when the wall already has 4 x 150 mm core drilled holes within, say, 5 metres of each other Clive "Bill Gardener" wrote in message ... I would be interested in hearing what the experts think of this as I have just installed a Bosch cooker hood which required a 150mm hole through the outside wall. Does a 150mm hole really affect the walls structural integrity??? Thanks, Bill |
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Minimum diameter for cooker extractor pipe
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