Aug 1, 2018 · Both encouraged us to looks at Alpen windows. Interestingly because they are sold directly to the owner and not via a local retail shop it was hard to get local encouragement to use …

Jan 15, 2023 · In another question on the site someone asked about Alpen windows and in looking at the Alpen site they mention using thin glass instead of a suspended film for energy […]

Jun 3, 2021 · My major question is about which frame material we should go with, the Alpen fiberglass casement option is the most expensive of the 4, with the Aluplast vinyl tilt/turn and the Alpen vinyl …

Nov 11, 2021 · Hello All, Building a new home in Minnesota. Builders are going with Marvin essential for windows. While researching for energy efficiency came across this forum and windows Alpen & …

Jan 31, 2013 · A lot of wood windows try to achieve the best of both worlds with vinyl or aluminum cladding on the exterior (for durability) and exposed wood on the interior. I think this is a nice …

Mar 9, 2015 · Hello, We are planning a new home in Southeastern, Pa. We are located in climate zone 4. I have requested quotes from Bieber, Zola and have found the price too expensive for the budget. …

Oct 2, 2020 · If you specified Alpen Windows for your high-altitude home, the units will probably be delivered with a funny-looking mylar balloon attached to a thin capillary tube. The balloon contains …

Nov 11, 2016 · Alpen windows have a pretty impressive line-up (R-7) that can be used in high-elevations (5,000+ feet). My question is about the HEAT MIRROR technology. There was some problems years …

Mar 22, 2025 · Alpen, for example, uses suspended films -- not even glass -- in their very high performance windows. If someone comes up with some magically better performing inert gas, or a …

Aug 29, 2018 · Alpen describes its Zenith Series ZR-10 windows as "The only commercially available, NFRC-certified full frame 0.10 U-factor window in North America." For more information on the Alpen …