Here comes the snow and here we find out if everything is working right. Heaters, storm windows, checking for possible leaks in the pipes. So far things look goo. The only problem is not being able to go out to the patio where it still tends to be cold. When you added on the patio you thought everything was going well. There has to be a problem and during this winter you’ll have it figured out. Start with the windows, and check for leaking cold air coming in and you have found that there is some caulking to do. You are not yet convinced that was your only problem. Checking the sliding glass patio doors show more problems than you wanted to find. The word is cheap and not cheap fix, and one bad choice cheap sliding patio doors. You saved yourself money when adding on the patio and decided to go a bit cheap on a few things so you could make it larger than planned. Now you have the larger patio and had you spent the extra money on the doors you would not be spending it on the extra heating bills which could cost more than the better doors you failed to purchase. Best thing to do is to get out the yellow pages and give someone a call, say for instance