I live in CT temps get down to the teens here. I have a circa 1990 12 foot long aluminum sliding double pane patio door made by Acorn Dorwal - a now defunct company. I have 2 issues... 1) It has a stationary panel at each end and the sliders pull together and meet in the middle (4 total panels OXXO). There is an interlock between the stationary panels and the sliders that should come together when the units are closed. The problem is that the sliders meet in the middle BEFORE the interlock is fully engaged. With the sliders closed and locked there should be minimal allowance for the sliders to move but they do - I would say about 3/4" or so. Of course this allows cold air to run right thru the disengaged interlock and into the room. I don't see any way to move the stationary panels back away from the middle in order to remove the interlock gaps. Any ideas how to fix this? 2) Since these sliders are between 15-20 years old you really feel the cold as you get close to them especially near the floor. The aluminum frame is really cold to the touch as there is no thermal break. Just wondering if I should bite the bullet and replace the unit with something more energy efficient (and comfortable). So question is what should I look for and what price are replacement sliders without the installation fee. It is not a sunny area so I don't need shades or tinting. The size needed is about 8' high by 12' wide. Is there any tax allowances still being given out for energy efficient door replacement? Thanks

We are in the process of selecting an out-swinging French door. I have gotten estimates for Pella and Anderson, both familiar nationwide names. The prices are atrocious! Today, I met a representative of Superior doors who claims his product is far superior to Pella and Anderson plus less expensive. Most of their products seem to be sliding doors, but they do have one French door. Has anyone heard of this company? Any thoughts out there on which company is the best, quality and service? Also, I will need a screen that mounts on the inside of the door. So far, my choice from opinions I have heard and read, is Phantom screens. Help??