Brand for single-mulled double-hung egress window in basement
Hi folks, hope you’re having as good a summer as you possibly can be, given our circumstances.
I’m looking for product recommendations for purchasing one twin set (“mulled”?) of double hung windows which I will use in my basement as the egress window for a bedroom. The existing opening is being enlarged by knocking down a tier of bricks to make room for the larger new windows.
CZ 4A (Northern Virginia), window is west facing with significant tree presence about 40-50 feet away (gets shaded early in evening). The rest of the 1977 house is not super tight, but I’m building the basement with R-19 polyiso on the walls and the same in encapsulating the crawlspace. The house has all vinyl windows, probably 10-15 years old. I would like to replace them eventually, but not as part of this project.
I have a recommendation of RJT Industries (Earthwise Gold) as a local manufacturer in Virginia. I haven’t seen the NFRC label on it yet, but the U was 0.27, according to the product borchure. I read Brian P’s recent article on Window Labels (thanks Brian!): https://www.greenbuildingadvisor.com/article/buying-windows and am ready to try to compare! If I read Brian’s article right, I’m looking for something between U <= 0.30 (smaller is better), and SHGC <=0.40 (smaller is better).
I would greatly appreciate any product recommendations for this single (twin) window purchase and application. This isn’t going to make or break my energy budget, but I’m trying to move the house towards better efficiency and doing right by the planet.
Thank you for sharing your wisdom.
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