I'm considering building a new detached garage and want to put in a floor heat system. Because of that everything is going to need to be insulated.
Does anyone know if blown in insulation is more efficient than fiberglass mat insulation? It appears to be cheaper than the fiberglass stuff and I'm wondering if I could get by with 2 x4 walls with blown in insulation instead of 2x6 with fiberglass mat? I suppose the other option is to still build 2 x6 and blow in insulation however I'll lose a little space inside.
Thanks!
