REHAU Announces Simulated Hung Window System With Tilt-turn Functionality
LEESBURG, Va., July 9, 2018 – REHAU announces the availability of the System 4500 simulated hung window that brings high-performance tilt-turn technology to the American colonial-style building and historical retrofit market. The innovative design replicates the appearance of a traditional single- or double-hung window using a uPVC tilt-turn system that can update older residential and commercial buildings to the latest energy, sound transmission and structural codes.
“Today’s historical preservation projects are often balancing strict visual requirements with the high-performance targets of modern buildings,” said Helmut Grohschaedl, vice president of REHAU’s window solutions division. “The typical North American single- or double-hung can’t meet these requirements, so we adapted our leading European-style uPVC tilt-turn design for an innovative solution.”
The REHAU design team was tasked with retaining the standard tilt-turn hardware functionality in a single sash, while making it look like a single-hung or double-hung window from the exterior of the building. A typical tilt-turn window design was transformed using three uPVC profiles to create the illusion of a hung system with offset glazing. A horizontal mullion is used to divide the glass into upper and lower lites, then two glazing profiles are added to bring the lower lite inward.
“The great thing about our simulated hung design is that superior tilt-turn performance is still maintained with the offset glazing planes,” said Randy Hoover, REHAU's North American window product development manager and lead designer on the simulated hung development. “You’re able to have the full operation of a tilt-and-turn or the secure ventilation of a tilt-only, without adding a lot of cost to the hardware.”
The simulated hung innovation opens the market of historical renovation to manufacturers of the System 4500 tilt-turn system, with minimal investment in additional inventory. Superior energy, sound abatement and security features combine with the capability of larger sizes to give the simulated hung design potential in traditional-style new construction as well.
The System 4500 line offers three-in-one window design versatility with fixed, inward-tilting and in-swing positions. With frame depths of 3 1/4 in (83 mm) or 2 3/8 in (60 mm) and 1 3/8 in (35 mm) glazing capacity, the system achieves U-values down to 0.18, STC ratings up to 41 and structural NAFS ratings up to CW-PG75. The system is available in white, beige or clay and can be laminated with solid color or wood-grain foils.
