bottom line is if your panels are sized correctly and are on a proportional thermostat, and you are not getting satisfactory results , then something is wrong with the setup. wood enclosures offer superior insulating factors, and despite what many may think there are ways to use UTH in the floor if built correctly. There is more than just one type of material that can be used with excellent results. Its up to the individuals to choose what works best for their situations and budgets.