Posted: Thu Dec 13, 2012 9:12 am
We are just going through this now as well. We insulated the ceiling above the entire garage, as it was dry-walled (but not insulated) when the house was built 12 years ago. So we blew in 12-13" of AttiCat fiberglass insulation, and also installed R-13 fiberglass insulation in the walls of the shop (3rd garage stall). We walled-off the shop with a 2x4" stud wall, and hung dry-wall on each side after insulating it with R-13.
Our initial thought was to simply use a 1500-watt oscillating heater and a 1500 "milk-house" heater. Both are electric. It's been somewhat cold here in Green Bay lately, with temps down in the mid-20s a couple times. While working on the shop with both heaters going, it will get to about 59 degrees. So it's fairly comfortable, but the heaters must run constantly. In fact, we already burnt out the milk-house heater...so it's toast. We purchased the Owens-Corning garage door insulation kit and still have to install it over the "insulation" in the existing door--but the big problem is around the edges and at the bottom. Therefore we bought some new weatherstripping for the edges, and an extra rubber seal for the base of the door. But even though we have yet to finalize the sealing around the garage door, it has become very apparent that the electric heaters are marginal at best...at least at these latitudes. They have to run all the time, are noisy, and the recovery time of the shop is quite long anytime you have to open an outside door.
Therefore we ordered a Hot Dawg heater from Modine, and this will get hung next week. We ended up getting a 36,000 BTU unit, because of a promotion they had going--and we got it cheaper than the 24,000 BTU that I originally intended to buy. So I guess we'll be leaving the door open to the other part of the garage, because it's certainly more heater than we need for a 12x22' shop! And obviously it was much more expensive than just using the two electric heaters, but it will also add to the value of our home should we ever decide to sell. So we bit the bullet...
Our initial thought was to simply use a 1500-watt oscillating heater and a 1500 "milk-house" heater. Both are electric. It's been somewhat cold here in Green Bay lately, with temps down in the mid-20s a couple times. While working on the shop with both heaters going, it will get to about 59 degrees. So it's fairly comfortable, but the heaters must run constantly. In fact, we already burnt out the milk-house heater...so it's toast. We purchased the Owens-Corning garage door insulation kit and still have to install it over the "insulation" in the existing door--but the big problem is around the edges and at the bottom. Therefore we bought some new weatherstripping for the edges, and an extra rubber seal for the base of the door. But even though we have yet to finalize the sealing around the garage door, it has become very apparent that the electric heaters are marginal at best...at least at these latitudes. They have to run all the time, are noisy, and the recovery time of the shop is quite long anytime you have to open an outside door.
Therefore we ordered a Hot Dawg heater from Modine, and this will get hung next week. We ended up getting a 36,000 BTU unit, because of a promotion they had going--and we got it cheaper than the 24,000 BTU that I originally intended to buy. So I guess we'll be leaving the door open to the other part of the garage, because it's certainly more heater than we need for a 12x22' shop! And obviously it was much more expensive than just using the two electric heaters, but it will also add to the value of our home should we ever decide to sell. So we bit the bullet...