In English Search form Home Insulating glass References The window guide News About us plug PLUG Administration Mounting Production Head office HOME / CONTACT / PRODUCTION Production Our production can be reached via the person in charge, Johan Holmberg 070-6338535 or directly to the factory in Oxelösund on telephone 0155 - 37411. I want you to contact me! Fill in the fields below and we will contact you shortly. Copyright © 2016 Grundels About cookies | Sitemap Grundels Fönstersystem AB Karlstad 054-18 05 01 Stockholm 08-21 84 50 Gothenburg 031-711 84 50 Malmö 040-611 80 50

In English Search form Home Insulating glass References The window guide News About us plug THE WINDOW GUIDE Window replacement Window renovation 3-glazed windows Kallras & Radiation features The energy calculator HOME / WINDOW GUIDE The window guide In this window guide you can learn what you need to know about windows! Read the information and do not hesitate to ask questions in the contact forms on the right. A window has many purposes, it should insulate heat, keep away noise, be used for ventilation, let in light and not least give you a view. Windows have existed since the birth of Christ and the oldest finds found come from Pompeii, the city that was buried during a volcanic eruption in 79 AD. Over the years, windows have become increasingly energy-efficient and noise-insulating, and today there is the concept of insulating glass, which means that two or more flat glass panels sit together at a certain distance between them. The space between the panels is completely closed off from the surrounding atmosphere and is often filled with gas to insulate better. An insulating glass pane consisting of two panes of glass is called a double-glazed window and a pane with three panes of glass is called a 3-pane glass . Windows with energy glass retain the heat in the room An energy glass often sits as an inner glass on modern 2-glazed windows and 3-glazed windows. The energy glass has been treated in such a way that it stops 85-96 percent of the radiation losses and reflects long-wave heat radiation. This means that about 50% more heat remains in the room. U-value indicates how well a window insulates The heat loss through a window is stated in U-value and it is a measure of how well the combination of glass, frame and arch insulates. The lower the U-value, the better the window insulates. Older double-glazed windows have a U-value of about 2.9, while modern window solutions can have values as low as 1.2, which in turn means that the energy loss through the window is reduced by about 60%. Learn more about: Window replacement Window renovation 3-glazed windows Cold race & radiation draft I want to know more about windows! Fill in the fields below and we will contact you shortly. Copyright © 2016 Grundels About cookies | Sitemap Grundels Fönstersystem AB Karlstad 054-18 05 01 Stockholm 08-21 84 50 Gothenburg 031-711 84 50 Malmö 040-611 80 50