S. and Canadian climate zones: Majesta® Double Hungs, Ultra EP casements and awnings, Windquest® EP casements and awnings. Other windows and sliding patio doors also may be specified from Kolbe with a triple pane glass option.
Helping homeowners lower their heating bills by effectively and efficiently keeping the warm air inside, Kolbe’s triple pane glass windows come standard with insulating glass and LoE coatings designed to achieve low U-factors. Kolbe’s Windquest EP vinyl windows and Ultra EP aluminum clad wood windows can achieve U-factors as low as 0.19 (approximately 1.00 in metric).
Window products can qualify for ENERGY STAR based on their U-factor. The new ENERGY STAR criteria for all Canadian climate zones went into effect Oct. 1, 2010. Internationally, ENERGY STAR-qualified windows are tested and certified by an independent, accredited agency. U-factors for the four Canadian climate zones range from 0.21 to 0.32, expressed in metric units as 1.20-1.80.
Exceeding 2010 ENERGY STAR criteria for all U.S. climate zones, Windquest EP windows were the first of Kolbe’s products recognized an inaugural participant of the Department of Energy’s (DOE’s) Volume Purchase Program (VPP) promoting energy-efficient R-5 windows. Windows with an R-5 value (or a U-factor of 0.2) represent the industry’s top tier of energy efficient windows.
Offering additional performance and peace-of-mind to homeowners in coastal areas and regions with high winds, stainless steel hinges on the Ultra EP products contribute to attaining Design Pressure (DP) ratings as high as DP80 for casements and DP85 for awnings. A broad palette of environmentally-friendly finishes protect the windows’ exterior cladding, which includes recycled aluminum. A range of sustainably-harvested wood species can be chosen for the interior trim such as those certified by the Forest Stewardship Council.
Available as either part of the Ultra Series aluminum clad wood product family or as part of the Heritage Series all-wood product line, Majesta Double Hung windows round out the collection of triple pane glass window choices. Kolbe’s newest product offering, Majesta Double Hung windows are made-to-order in sizes as large as 6×12-feet. The large sizes and traditional design make the windows a fitting choice for hotels, historic properties, converted warehouses and other commercial and mixed-use spaces.