We have a custom made front entrance with a turn-of-the-century wood front door and two sidelight windows that are single pane, one foot wide by seven feet high. Evidently these were just caulked into place and then a one inch by one inch wood strip nailed around them to further secure them in place. Originally, what I wanted to do was just add custom made high R value windows on the outside, but someone pointed out there would be condensation between the old window and the new. Therefore, I guess I should just try to replace what is there. Who will make custom size windows like this with high R value? I know Heat Mirror and Serious Windows make an R10 or better window, but what do you do about small custom jobs?

I've been researching my butt of lately trying to decide on which windows to go with in my house. I've debated me putting them in vs having someone else do it and although i'm capable of doing it myself the minimal price of labor vs how long it would take me to do it made having someone else do the install come out as the winner. I've narrowed it down to Window World and one other local company. I know some of you out there don't like Window World and i've read all the complaints but i've done my research (lots and lots of it) and it seems most people that don't like them are their competitors and most people that are actual customers liked them and the windows themselves, which after more research come to find out are Alside windows which get more thumbs up than thumbs down. So now that i've given you some background so this doesn't turn into a go with this window/company instead thread here is the latest question.... I wanted the salesman to find out if the 4000 series would meet the requirements for the new window efficiency tax incentive or whatever it's called, basically the window has to have a U-Facor of .30 or less (which some of you probably already know) He said that has obviously been something the company has started to research since before it only had to be .35 or less. He told me today that the 4000 will meet .30 if they do a different Low-E coating (nothing is in writing yet, but he said he will get with me as soon as it is) but that will raise the cost to $33 more a window. I can get the 6000 Series for $35 more which is their step up and he explained it as a heavier frame window that wasn't really necessary where I live (Central Illinois) which is why he still recommends the 4000. He said the 6000 is mainly used where the temperatures are extreme for long periods of time ie: Maine, Minnesota, Arizona, Texas etc etc. So....... i'm still a little curious as to why he is recommending the 4000 over the 6000 since it will be more $$ for him and the company granted it's only $2 more a window x's 19 windows = $38 but hey money is money. Is he veering me toward the cheaper because he gets more of a cut or is it because he actually thinks it's overkill in my area..... What do you all think????