I replaced my doors with steel ones, If you do, go with the magnetic weather striping it is tight and stays tight unless you damage it. I added an attached garage and a steel door was required by code as a fire stop door. [this dumb one didn't know that] After I saw the door in action it was a no brainer to replace the 2 exterior doors. With the unheated garage my gas bill dropped enough to pay for the doors in 2 years! Secure? I would rather try to crack a safe. The weak spots were the screws which I replaced with extra lengrh toughtened steel which went through the double studs of the door frame. I installed a steel plate and there were caps to fit. The front door I just used the special screws. I talked to the cops that investigated Breaking and entering and told me the worst was when the crooks would get into the garage overhead door [very easy if you have a remote control opener] then they would close the door and under cover they could even break thru walls if needed while they took anything you had that they wanted. I think this is true because when I gave up my farm I bolted the garage doors closed. Wen I went back all the rear windows and doors were gone along with really heavy stuff like the stove and kitchen sink [soapstone] you could see tracks where a truck had been taken to the back of the house but it looked normal from the road!Britesea said:I have used the shrink-to-fit plastic every winter, and it has worked fine as well as allowing light to come in (which the blackout curtains would not do). But I would like to build and install a couple of passive solar heaters; pretty much all the designs I've seen hook up to a double hung window:
http://www.sufficientself.com/forum/uploads/3802_solar_air_window_box_collectors.gif
We have the windows that open sideways, so I want to change windows to allow the solar heater, and might as well make them double glazed at the same time. (It would not be easy to find single paned windows anyway).
We only have 6 windows in the entire house, so if we can manage to do 2 of them each year it will only take 3 years to do all of them. There is a window in the back door, but it's old and not very secure and I want to replace it with a steel one.