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Replacement Double Glazed Units Over time double glazed units (or sealed units as they are usually known) can break down. This is usually the case when the insulating properties of the inert gas between the glass panes break down. It is essential to replace a damaged or broken window to ensure that your home is energy efficient and well-insulated. The task is relatively easy and straightforward. Installation If the window was fitted correctly, the new window should fit comfortably and firmly within the frame. If the new glazed unit is not of the same thickness as the older one then you may need to modify the existing “packers” (usually blue or red slips of plastic) inside the frame to ensure it is properly positioned. If you are unsure how to do this then consult your installer or the instructions provided by the manufacturer for guidance. A high-quality replacement double glazed seal will be manufactured to the highest standards and will fit into your frame with a minimum of hassle. A small mistake can have an enormous impact on the performance of your window and should therefore be checked carefully. Modern double glazed units are an energy efficient addition to any home. They utilize argon between the panes glass to keep them warm and decrease the amount of heat that can escape from your home during cold winter. However, there are times when these units can break down or develop problems with their seals. This happens when moisture enters the air cavity and results in condensation. Moisture in the windows' cavity is not only unsightly but also decreases the effectiveness and efficiency of the glazed unit. Condensation can be caused by a range of causes. The most effective method to determine the cause is to look for a foggy or misty look between your windows. This is an indication that the seal between two panes is been broken and water is flowing into your living space. The first step is to remove the glazing beads from around the edges of your window. It can be difficult and messy, however it is worth it as you will have access to the wedge gasket that keeps your glass in place. It is essential to remove the beads with care so they don't break. A little help from a friend can be helpful at this point. After the beads have been removed, allow the sealed unit a little to fall out of the frame. With the help of a person, hold it in place while you accurately take measurements of its size, height and width. This information is vital as it will determine what size wedge gasket you need to cut for your newly double-glazed sealed units. Checking Double glazing units or sealed units as they are often called and can fail in time. This normally occurs due to a breach in the seal which allows condensation and moisture to infiltrate the space between the panes. This affects the ability of the window to keep cold air out, warmth produced by the heating system in, and solar gain from the sun inside. A seal failure can cause draughts to be felt in your home. It is crucial to check your double-glazed windows for signs of failure. If you see moisture or mists between the glass, it is a sign that the seal is not working and a new one should be installed. If you must replace a sealed unit it is essential that the replacement unit is the correct size to fit. The uPVC frames in which the sealed unit is placed have a very small tolerance for movement, meaning that even a few millimetres could impact the performance of the windows. Talk to a professional or consult the guide provided by the manufacturer to ensure that you order the correct size. With a helper holding the new piece, gently place it in the frame. This should be done in a safe location as the glass could break if it falls. After the sealed unit is secured to the frame reattach any packers on the bottom of the frame and then put the glazing beads into their original position. Once you have done this give the whole window a visual examination to ensure that there aren't any gaps or misalignments that could compromise its performance. It is also possible to apply a bit of sealant to the perimeter edge of the frame to prevent it from moving in future. Checking the thickness of the unit is recommended. Double-glazed units are available in various thicknesses. Making the wrong choice can have a negative impact on the u value of your home. Sealing Double glazing is a fantastic option to boost the efficiency of your home's heating system and enhance audio quality by cutting down on the transfer of sound. However, over time the glass's seals may get worn out, leading to misty windows and a reduction in performance. In these instances replacement is required. It is a good idea to employ a double glazing professional who will assist you in selecting the most suitable glass products, take accurate measurements and ensure proper installation. If you are replacing a sealed unit the first step is clean the frame. You can make use of an old paintbrush (4 inch is ideal) to clean the frame by removing dust and cobwebs that have built up in the frame over time. It's a great idea to clean the seals that have been installed after the frame has been cleaned. The easiest method for doing this is to pull out the gaskets on the Wedge by placing your fingers on the edge and pulling it out until you reach the point that it overlaps with the friction joint. It is also important to make notes of the length that you require for your new seals since it will help in cutting them to the required size. The installation of the sealed unit is straightforward once the frame and gaskets have been cleaned. It's a great idea to take off the beads (the UPVC frames clips that are used to hold the glasses) and measure the size of them. This will ensure that the seal is constructed according to the correct dimensions and won't leave any gaps around it. Once the beads are back in place, you can put in the top bead, and then proceed to the next three. You should be cautious not to touch the sealed units for a few minutes following the sealing process as the silicone needs time to set and harden before you can use it again. I typically wait 6 hours before handling it, however the silicone sealant's time to set will differ. Finalization Once the new double glazed unit is snugly in place within its frame, it's time to seal and complete. This is more than just a physical closure to the project; it's an affirmation that your home is ready to weather the elements with its new, secure guardian safely in place. The first step is cleaning the frame and removing any glazing beads strips or other materials that were used to hold the old glass. The frame is then cleaned of dirt, sealant or glazing tape. This process also rejuvenates either the frame made of timber or aluminium. It's also a good opportunity to evaluate any damage and make small repairs using wood filler or sanding if needed. For major damage, you should consult an expert. Next, the tubes for the spacer are filled with desiccants to adsorb any moisture that might be trapped in-between the two panes of glass in the course of manufacture or later on. replacement window gaskets repairmywindowsanddoors is a standard procedure for units with warm edges. Thermoseal Group stocks desiccants as well as manual and automated desiccant dispensing equipment. After the spacers are filled with glass, it is sealed with a high-performance silicone designed to withstand the harsh conditions of Australia's climate. This sealant forms an airtight barrier that's both flexible and durable, and can expand and contract without breaking. It is essential to choose the correct thickness as any gaps could impact thermal performance. If you're not sure about the correct thickness to use seek advice from a professional or manufacturer's guide. The final step is to add an additional sealant, usually polyisobutylene (PIB) or a similar product. It's applied to edges of the frame's exterior which creates a secondary seal capable of repelling moisture and prevent air penetration and increase energy efficiency. The frame is then finished with an aluminum cladding. It's a protective coating that can withstand the elements, keeping your frame looking new for many years to come. It's a smart investment for the long-term durability of your home's frame especially in the case of federation or period homes where wooden frames are susceptible to rot and degradation.