Extractor on wall with no outside access - how?

[JoeJoe]

Hi,

I am looking to fit a 6" extractor fan for an internal kitchen (i.e. no windows) to an external wall.

The problem I have is that the hole will be around 10m from the ground (2nd floor), and although I can probably hire a tall enough ladder to get there and fit a gravity-type shutter, I don't really fancy doing it as the pavement underneath looks pretty unwelcoming...

I was thinking about investing in a fan with automatic internal shutter that should take care of incoming draft (will it?), and then just fit a 6" flue, similar to the one used for combi boilers to line the hole and cavity.

Will this work? Where can I buy a standard flue? Any better suggestion?

TIA.

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[BigWallop]

Drilled from inside using a proper core cutter, and then flue pipe with cowl and cover through the wall. Fit the fan on the inside, and Robert is your mothers brother.

[bigcat]

Theres usually a grill on the outside thats bigger than the hole, and fixed to the outside of the wall... I'm not sure I follow what youre suggesting, ie how to finish the job off. I'l need to do something like this later on, so wouldnt mind knowing a way that avoids exterior access.

NT

[Mike]

But remember to have somebody guarding the pavement outside for when the core falls out the new hole and gravity takes over.

[JoeJoe]

Good point! Thanks.

[bigcat]

Thanks to Bigwollop for explaing that one.

Could be interesting on a 30 storey...

NT