Does unheated barn need thermal break in aluminum windows?

Husa Berg
November 7, 2019

We installed aluminum windows that did not have a thermal break in our previous house and they would sweat like crazy in winter (climate zone 3C)
I would like to install aluminum windows in my unheated barn and am wondering whether or not I should pay the premium for this option
Also, are there any manufacturers that make an inexpensive aluminum window (with thermal break or not depending on your answer above) other than Milgard?

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