Another question - if you could use any heating system for your detached garage what would it be and why? I am looking for something that is reasonable from a capital perspective but is also efficient.
Background is the following:
The garage will be completely underground
It will be roughly 32 feet by 40 feet and 12 feet tall.
The full slab will be insulated and poly'd for future epoxy/finishing.
We will be spray foaming the whole thing including the steel decking roof.
I am currently split between using the natural gas heater (standard ceiling mounted), an electric unit of a similar nature, or a boiler hydronics heating using coiled radiant heating.
We looked at in-slab but the cost of adding a couple inches to the slab to accommodate and the pricing of the coiling needed within the slab was very very expensive. I did hear it was the most efficient.
Secondly, does anyone have any suggestions on good garage doors with good R values?
Thanks!
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