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| New single and double hung window system Pacific Aluminum announced the availability of the 4250i series, a brand new single/double hung window system utilizing Insulbar thermal barrier technology. Using Insulbar means better insulation performance, increased strength and more design flexibility over traditional pour and de-bridged thermal barrier technology. The improved insulation performance is due to increased aluminum separation and air space using material that is extruded into a shape that effectively and economically joins two separate aluminum extrusions. This allows for competitive U-Values, exceeding the performance of pour and de-bridged systems. The unique composition of glass-reinforced nylon has a coefficient of thermal expansion that is very close to that of aluminum, drastically reducing internal stresses. Therefore, the bond between the Insulbar and the aluminum extrusion retains its mechanical integrity through a wide range of temperature fluctuations. This composition and the overall system geometry it allows provide for a stronger composite profile. Use of the Insulbar also allows the new 4250i series to achieve a dual finish capability because separate interior and exterior extrusions are mechanically crimped to the Insulbar thermal barrier. Different finishes can be specified for interior and exterior extrusions, providing true aesthetic design flexibility in a high performance aluminum window system. Currently undergoing testing, the system is expected to achieve at least an HC 65 rating, a competitive U-Value and a Level 1 blast rating. write your comments about the article :: © 2006 Construction News :: home page |