Paarhammer Windows & Doors has introduced a new glass technology to their tilt & turn windows to deliver multiple benefits including better insulation, energy efficiency and comfort.

Already known for their excellent insulation performance, Paarhammer windows now offer enhanced benefits with the new Heat Mirror glass. Heat Mirror (HM) insulating glass units (IGU) contain one or more clear, low-emissivity films suspended within the sealed airspace of a dual-pane IGU to create super insulating cavities that buffer against heat loss or heat gain.

When combined with high-performance low-emissivity glass and argon or krypton gas fill, Heat Mirror IGUs can be used to tune building envelope performance by maximising or minimising solar heat gain while optimising daylighting and views. Heat Mirror IGUs are able to achieve significant reduction in energy costs, and maintain a far more uniform air within the building for a more comfortable internal environment all year around thanks to their high insulation properties and Solar Heat Gain Coefficient (SHGC) performance matched to the needs of the site and local climate.

Key benefits of Heat Mirror IGUs include 99% block-out of harmful UV rays; 33% weight reduction compared to the equivalent triple glazed unit; and 30% less energy consumption Cradle-to-Grave achieved by replacing the third pane of glass with film than the equivalent unit using conventional triple glazing.

Paarhammer sources its Heat Mirror units through Australia’s leading glass manufacturer Viridian Glass, part of Australian Building Products Company, CSR. Viridian’s General Manager, Marketing Lachlan Austin explains that Heat Mirror IGUs bring a number of additional advantages over conventional double glazing including approximately 4db noise reduction over an equivalent unit without the suspended film; and high selectivity offered by the coatings on the film providing a high ratio of Light to Radiant Heat, ensuring better daylight access.

The U-values of Paarhammer openable tilt and turn windows with double glazed IGU is 1.8-2.2; with triple glazed IGU is 1.3-1.8; and with Heat Mirror glass in double glazed IGU is 1.0-1.25. Windows made with Heat Mirror technology can therefore, substantially lower energy bills, and permit far greater expanses of windows and doors without diminishing the building’s energy performance.