These people have some good small burners that will easily heat the space you have. I have a miniburner in my 20' x 20' workshop that is tiny and it is more than adequate.
Thank you mate... I.ve been looking at those stoves... Only worry I have with them is if they will rust with the dampness in the garage
They are usually painted with black heat resistant paint . Mine in the workshop is still mostly black five years in at least... just odd spots of rust where it has been bashed about by me... to be honest even if they do rust a bit a wire brush and a going over with stove black should sort it.
Zebo black grate polish will keep it pristine!
always loads of it in our shop, known as 'Black lead' here, the first flat my brother had in London had an old victorian grate tucked away behind a false bulkhead and I remember, every time he came home there was always a trip down to Williams Bazaar in Amanford (if we haven't got it - you don't need it) to pick up a few tubes of zebo - we also sold little sachets of 'Blewe' (as it was called around here) on the laundry shelf. my grandmother recalls that as a nipper when they still lived up 'over the fields' there was an episode when I got hold of the blacklead. And I think it was my brother who found and opened a twist of Blewe and stayed the colour of a leaking biro for weeks. I was just fascinated with the damned stuff.
It's probably banned on health and safety grounds now !
Black leading was what we called polishing the range when I was a kid ... but it wasn't lead - it was graphite - the same stuff that is found in lead pencils ... which, of course, are not lead at all - they are graphite.
Interesting, thanks. I'd never heard of white lead paint. 'Red lead' for metalwork can still be bought, but perhaps they've taken out the naughty stuff. I have some in the ws, I'll look later.
My grandfather and others of his generation I knew always called a pencil a 'blacklead'
Sheds probably don't fall under building regulations, in which case such regulations don't apply.
I can think of a few locally, remember my Godfather having to make coffins for a whole family who died from carbon monoxide poisoning from a heater (not many 'off the shelf' boxes stocked in children's sizes) and our neighbour when I was a kid, buried both his parents who died of carbon monoxide poisoning in their sleep.
you usually are
Its ok, it isn't my shed or my question, those belong to Bryang
I'm just sticking my oar in! I've had woodstoves since the early 80's, always fitted my own, and even worked for a company fitting stoves and lining chimneys for a couple of years. I confess I can be a bit blasé about safety, but I suppose that's because I have a pretty good idea of what can happen and how to avoid it. I've never owned a remotely draft-proof house or workshop so CO has never been an issue. I relied on one completely while overwintering in an old caravan a few years ago, which I fitted a thermostatically controlled air feed too. That wasn't draft-proof either - caravan manufacturers I think make sure of that. 
