Hiya
Garage heating
I use a single garage, so here is what I do and what I plan to do
Fan heater,,,, ug no way it blows air that cools before you feel the benefit. I use a three stage oil filled heater
Reason
There is a lot of dust when I work and wood shaving so open heat source is a fire risk
To stop the drafts I hang a old thick wool blanket over the garage doors half way down I hang netting and have the heater in the have I am working in
I use a hazmat type white body suit that keeps me clean and keeps heat in
I use an old body warmer that I have on over my hazmat suit
Last I have a flask of drink, when that’s gone it’s time for a break
TO DO.
I plan to get that cheep recycled plastic insulation from b&q to do the roof over which I will put hard board to keep heat in
Later I plan to do the walls
At the moment it’s a choice
Insulate the garage... or get the tools, wood blanks, jaws, chucks for my wood turning
Wish you the best