Admittedly, I am not the best source of information on windows. However, I do know that the spacers are important because of energy transfer through them (as you said).
There are other important factors to consider also.
1) How the glass is bonded at the edges (to me this is probably the most important. I have replaced many windows where the seal gave out and moisture condensed inside)
2.) If a gas (i.e. Argon) is used between the panes for more efficiency
3.)if a tint film is used between the panes.
4.) casing around the window and it's finish .
5.) sturdiness of hardware used on the windows (there's nothing more frustrating than a window that won't pull tightly closed because the hardware bent or broke).
I would strongly suggest going with a well respected brand like Anderson, Pella, or Peachtree. They will stand behind their products well, and have the research budget to create the best possible window at the lowest possible cost to you.
As for INEX spacers...I did 2 hours of internet research and made some calls to local suppliers I deal with, and none of them have ever heard of them. Weall agree that it's either a regional thing, or someone's trying to fluff you with names to make a sale.
A reader wrote in with this information:
You had a posting regarding Inex Spacer. Inex Spacer is manufactured in Canada and is starting to gain acceptance by US window manufacturers. It is made of a reinforced thermoplastic material, and in independent lab testing it has outperformed swiggle seal in thermal conductivity tests. More info about Inex spacer is available from the manufacturer whose phone number is 514-343-9132. |
