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We've got this horrible little wooden sun room attached to the back of our house. It was always my intention to just knock it down and either extend our patio area or maybe build a conservatory.
But I've decided that it could actually be a nice little 'rustic cabin', somewhere to spend a Summer or Autumn evening. I'd like to put a wood burner/stove in there. The room is only approx 6 by 7 metres with a flat roof. Am I right in thinking that I could literally just have the flue going up and straight out the roof or is that just too simplistic a way of looking at it?
No, not really. Just make sure that you use decent heat-shields to prevent the think setting fire to your sun room, and make sure that the flue can get a draught to help the fire draw.
You'll want to use double skin flue to reduce the risk of set light to the roof as it passes through. For building regs the flue needs to be 1.5 times its external diameter away from the heat shield.
There's also regs on how high the flue outlet needs to be, this will vary depending on proximity to windows and main house roof pitch.
Might sound complicated but is quite straight forward.
Hearth too, and you need to ensure the fire/flue are no where near a combustable wall.
And
[i]The room is only approx 6 by 7 metres [/i]
That's the size of some folks flats/houses...
Yes, hearth, needs to be 150mm out sides and 300mm out front.
Thickness depends what your floor is made from...
Combustible = 250mm thick hearth
Non-combustible = 250mm including non-combustible floor.
If you want the flue pipe near a wall line it with fireboard and it needs to be 1.5 times diameter of flue away (for twin wall flue) as with roof penetration.
The building regs you need to look at are [url= http://www.planningportal.gov.uk/uploads/br/BR_PDF_ADJ_2010.pdf ]part J[/url].
Cheers chaps.
The flue pipe will sit around 3-4 foot away from the closest wall. Is this a safe distance to avoid the use of fireboard?
Also consider if you are in a smoke control area/will you need a smokeless rated stove. Don't count on just "winging it" if you are and have curtain twitching neighbours..... though the delight of showing them the relevant paperwork and watching their reaction is priceless 😉