well Darla got her new sofa this week and it turns out there is no room for my grow chamber that i was going to build. we have been half joking around for the last 18 months about building a greenhouse off the southside of the house. well guess what my project is for next spring/summer? basically the plan is to use the same principle of the local commercial greenhouse and use 2 layers of plastic. im looking more for practicality and cost effectiveness than for assetics. they have to replace their plastic about every 4 years which works for me. it gets quite cold here in the winter and i was thinking of a wood stove with an electric heater on a thermostat as back up. it just requires a few weekends during the summer cutting wood for fuel for the winter. for cooling in the summer i would use swamp coolers. the north side of the greenhouse will actually be the side of the house. the back sliding glass door will open up into the greenhouse with a door for access to the outside probably on the west wall which along with the east will be made of 2x4's and plywood and will be insulated and will have a couple glass windows. any flaws? humidity may be a problem with the wood stove but what suggestions are there to increase humidity? will spraying the floor of the greenhouse a few times a day keep the humidity up. i havent officially measured anything but it will be about 10 or 11 ft high. 20-25 ft long and about 10 ft wide. im a so so carpenter BUT i have an uncle and my sisters boyfriend are two of the best i have ever seen so i will have help. any thoughts?