Revisions log for question
Is it reasonable to insulate the garage from the inside?
Revision 1
Garage 9x5x3m, adjacent to the house (fire door), flat roof of wooden construction (bitumen on OSB board), rafters 18cm with a distance of about 60cm, outside gypsum board 4cm + plaster, inside a light lime-cement plaster.
The garage has a lifting platform, and plans to heat the garage at low temperatures with an infrared heater. (Above the work area). Does it make sense to provide the garage ceiling with 180mm of insulation, vapor barrier (incl. gluing), counter-battens, OSB boards?
Some say it makes sense because it will heat up a bit, others think the OSB boards will start to rot (I don't understand where the moisture is supposed to come from for this, but maybe someone can enlighten me). My basic idea is that I want to hide the beam structure and install spotlights. I would like to cover the inside of the garages with a nice ceiling (preferably something durable).
What would you recommend?