MegaSack DRAW - This year's winner is user - rgwb
We will be in touch
We have an old woodburner with a 5" flue which I am planning to install in an outbuilding which is used as a workshop. It is constructed of insulated steel panels with some GRP (I think) double gazed skylights in the roof. Ideally I would like to take the flue up in single skin pipe to just below the roof & then through it with twin walled stainless......but I have some questions.
Is there a minimum height needed for a flue to draw? (I know that the top of the flue is supposed to be 2.4m horizontally from the roof)
Can hot ash escape via the top - it could potentially damage the roof if it lands on it?
Is a cowl a good idea to stop rain falling into the stove & rusting it?
Is it best to run the flue in 5" pipe, or should I use 6" with an adapter?
Any woodburner experts out there?
I think regs now requires 6" flue for solid fuels.
Thanks Stoner.
Also anyone know where the cheapest place to buy the stuff is.
[url] http://www.firesonline.co.uk/acatalog/index.html ][/url]
I used these guys, they were good on advice, products and prices. Found little concensus amongst many shops and fitters but this supplier seemed to know their stuff.
I'd definately say yes to the Cowel, stops rain and also quite importantly birds - I got two like this and i found them very good, both chimneys still draw fine but are perfectly dry.
[url]http:/www.chimneycowlproducts.co.uk/acatalog/Terracotta_Cowl_Strap_Strap_Fixing_.html][/url]
A cowl is a good idea, we had one installed when we got the new stove fitted. Went with 6"/adaptor although our stove is certified for a 5" flue (so they told us in the shop, something to do with it being an extra efficient/clean burning type model). I just wanted to make sure that we were covered if we had to change it at any point!
I don't think there is a minimum draw, I have seen plenty of stoves working in huts/cabins/sheds/garages/tents over the years 😉