Full-Frame Fixed Window Provides an R10 Insulating Value

Zenith Series ZR10 double-film fixed picture window design provides an R10 insulating value.

Zenith Series ZR10 double-film fixed picture window design provides an R10 insulating value.

Alpen High Performance Products has announced the availability of a full-frame fixed window package capable of providing an R10 insulating value.

Following independent testing by National Certified Testing Laboratories and subsequent certification by the National Fenestration Rating Council (NFRC), Alpen’s Zenith Series ZR10 double-film fixed picture window design (NFRC Certified Products Database number ALP-M-10-00120-00001) was verified to deliver a .10 U-Factor. Earning an NFRC rating also makes the Alpen ZR10 window eligible for the U.S. Department of Energy’s (DOE) ENERGY STAR certification, and a candidate for ENERGY STAR Most Energy Efficient 2016 recognition.

According to the R-value scale, originally based on mechanical engineering parameters of thermal resistance and now a mainstream reference for insulating capabilities used by the DOE’s ENERGY STAR program, this performance data equates to an R10 insulating factor. The R-value rating scale translates the NFRC’s U-factor to a thermal resistance number, with, for example, an R6 window indicating a U-factor of 0.17, and an R10 window representing a 0.10 U-factor.

The Alpen ZR10 rounds out the company’s existing range of Zenith Series 1025 and 925 double-film window designs, engineered to provide insulating properties in both heating- and cooling-dominant climates. The Zenith Series is one of four series of window and door systems that comprise the current Alpen product offering.

In total, Alpen has updated NFRC ratings for all of the company’s previously NFRC certified window and door products, as well as achieved a new NFRC rating for the Alpen Zenith Series ZR10 fixed window.

Alpen’s window packages, which can offer full frame window package performance at up to R10 performance, integrate glazing technology with a range of design options for residential and commercial projects. Providing condensation and air infiltration resistance, noise reduction and structural performance, Alpen windows also offer warm winter interior glass surface temperatures for colder climates. The complete line of Alpen window solutions incorporates features and options like pultruded fiberglass frames, closed-cell foam insulation, marine-grade glazing sealants, hermetically sealed high-performance spacers, low-e coated glass, and inert gas fill.

Alpen’s broader mission is to expand its offering of multiple high-performance glass options, through the integration of glass and frame technologies such as glazing solutions and daylight redirection technologies, along with lightweight framing materials. Combined, these features empower Alpen windows to act as “wavelength selective filters.” Alpen’s window and glass lines provide center-of-glass R-values as high as 20, directional “tuning,” 99+ percent UV blockage, radiant comfort, and condensation resistance.

Be the first to comment on "Full-Frame Fixed Window Provides an R10 Insulating Value"

Leave a Reply

%d bloggers like this: