http://www.alertglass.co.nz/faq/faq.html 2010-10-28T19:58:44.262+13:00 http://www.alertglass.co.nz/faq/faq.html#How_does_acoustic_glass_work 2010-10-28T19:58:44.262+13:00 Two or more layers of glass are bonded to a soft plastic interlayer. Available thicknesses range from 1mm to 1.5mm to achieve the desired sound stopping ability of the glass FaqMaker http://www.alertglass.co.nz/faq/faq.html#How_do_heat_pads_in_mirrors_wor 2010-10-28T19:57:20.702+13:00 A sheet of mylar plastic with a high resistance printed circuit is either glued to the wall of tapes to the mirror. Surface contact is essential. Electricity is then passed around the circuit, heating it up and warming the mirror which then makes it mist free FaqMaker http://www.alertglass.co.nz/faq/faq.html#What_is_laminated_glass 2010-10-28T19:55:21.042+13:00 Laminated glass is usually two layers of glass bonded to a plastic interlayer. In the case of a windscreen, two layers of 2mm or thinner glass is bonded to a 0.76mm PVB (Polyvinyl butyral) interlayer of plastic. FaqMaker http://www.alertglass.co.nz/faq/faq.html#What_is_toughened_glass 2010-10-28T19:54:09.201+13:00 Glass that has been heated to softening point then rapidly cooled. When toughened glass breaks it does so in small relatively harmless particles. Most cars have toughened glass side and rear windows and laminated front windscreens. FaqMaker http://www.alertglass.co.nz/faq/faq.html#How_do_I_remove_ice_from_my_win 2010-10-04T19:46:57.734+13:00 The classic mistake is to throw hot water over your windscreen in winter. This will probably crack the windscreen, the safer way is to use a bucket of cold water to remove the ice FaqMaker http://www.alertglass.co.nz/faq/faq.html#My_car_window_has_fallen_down_H 2010-10-04T19:45:50.109+13:00 It's probably the window regulator that is the problem. We can source most models and fit them for you, no more driving with a block of wood jammed in the window! FaqMaker http://www.alertglass.co.nz/faq/faq.html#How_long_does_putty_take_to_dry 2010-10-04T19:44:59.254+13:00 Leave putty approx two weeks to dry before painting FaqMaker