Two panes of glass make the window more insulated, as the thicker the glass is, the more difficult it is for heat to pass through it. Double glazing also traps air in between the two panes of glass, creating an insulating barrier that will stop heat being lost. The costs and savings will be different for every home, depending on its size and the quality of the double glazing.
Cost savings are also dependant on other factors within your home including:. While double glazed windows may cost more to install initially, a lot of the insulations costs can be saved over the lifetime of double glazed windows. Double glazing should be viewed as a long-term investment. They also add to the resale value of your home, not only adding to the energy efficiency rating of your property but increasing aesthetic appeal.
While the initial cost may be off putting its important to think of the long term benefits installing new double glazing will bring to your home. If you are wanting to increase the energy efficiency of your home and see yearly savings on your heating and cooling bills, then double glazed windows and doors are the obvious choice for your home. Call our experienced sales team to find out more about how Ecostar can provide you with some of the most energy efficient windows and doors on the market.
These are set 20mm apart, and an insulating gas is used to fill the void in between. This greatly reduces the transfer of heat through the window, thus keeping your home cooler in summer and warmer in winter. Having energy efficient windows could help to reduce your carbon footprint and your energy bills. Energy efficient glazing reduces heat loss through windows and means fewer draughts and cold spots.
Not only do they keep the heat in, energy efficient windows insulate your home against external noise. Energy efficient glazing reduces condensation build up on the inside of windows. Before replacing your windows, check with your local planning office if any of the following apply to your property:.
Most people have double or triple glazing fitted by a professional. Competent DIYers can fit some secondary glazing systems, but a professional should carry out removing old windows and installing new ones.
Energy efficient windows come in a range of frame materials and styles. The energy performance of a window depends on how well these materials stop heat from passing through, as well as how much sunlight travels through the glass and how little air can leak around the window.
Energy efficient windows are made of two or three glass panes sealed in a single unit, surrounded by a frame made from uPVC, wood, or another material.
The gaps between the glass panes are filled with air, or an inert gas such as argon. The air or gas is completely sealed. The most energy efficient type of glass for double and triple glazing is low emissivity low-E glass. Low-E glass has a microscopically thin coating of metal oxide on one of the internal glass surfaces.
This coating reflects heat back into the home but still lets in the light from outside. A thickness of 16mm is often quoted as the optimum, but smaller gaps may be more appropriate in some cases. Performance can also be improved by filling the gap with an inert gas such as argon, xenon or krypton. These gases are more insulating than air. These are set around the inside edges to keep the panes of glass apart.
The design and material used for the frame will both affect heat loss, but you can find high performing windows made with any of the main frame materials. Double glazing costs vary significantly depending on the materials and style. The entire window the frame and the glass is assessed to allow for heat loss, draughts and solar gain, giving a rating that indicates the overall impact of fitting that window in your home.
To choose the most energy efficient window, look for the BFRC rating. A u-value is a measure of how easily heat passes through a material, but it is not a complete measure of how efficient a window is. This means that you should receive excellent customer service.
If you use one of their members to fit your windows but you are unhappy with the work, you will also be able to use their free reconciliation service. Installers registered with these schemes will give you a certificate when the job is finished that states your new windows have been fitted in compliance with the regulations. Find registered schemes for windows. Visit the Planning portal to find out how to apply for building control approval.
In Scotland, each local authority has a building standards office. Check with them first to see whether you need a building warrant for your new windows. Always get at least three quotes to ensure you get the best deal. If you live in a conservation area, there may be restrictions on what you can do to your windows. These areas are of special architectural or historic interest, meaning that any work you carry out on your home must preserve or enhance the character of the area.
This does not necessarily mean you cannot replace your windows, but it might mean you will need to get windows that complement the character of the building and area. An increasing number of companies offer double glazing in period properties. Listed buildings will require permission if you want to make changes to your windows. Old windows in historic properties can be protected, not only for their appearance, but also for the materials and methods used to make them.
However, secondary glazing can be a non-intrusive way of insulating historic windows from the inside, and may be granted permission. There are a number of non-intrusive window insulation options available for historic homes, such as heavy lined curtains, shutters, secondary glazing and sealed blinds.
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