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Replacement Double Glazed Units Over time, double glazed units (or sealed units as they are commonly known) can break down. This usually happens because the insulating properties in the inert gas that is between the glass panes break down. If a window has been damaged down, it is essential to replace it to ensure that your home is properly insulated and energy efficient. The task is simple and easy. Installation If the window was put in correctly, the new unit should be able to fit comfortably and securely inside the frame. If the new unit isn't the same thickness as the old one then you may need to modify the existing 'packers' (usually red or blue slips of plastic) in the frame to ensure it is properly positioned. Ask your installer for instructions provided by the manufacturer if you're unsure. A top-quality replacement double-glazed sealed window is manufactured to the highest standards, and should fit your frame with minimal fuss. But, even a tiny mistake can have an enormous impact on the performance of your window and should be examined carefully. Modern double glazed units are a great energy efficient addition to any home. They use the argon gas between the panes to provide insulation and reduce the amount of heat that could escape your property during cold winter months. However, there are times when these units fail or have issues with their seals. This happens when moisture gets into the air cavity and causes condensation. The condensation in your window is not just unsightly but also affects the efficiency of the glass unit. Condensation can be caused by a range of causes. The best method to determine the cause is to look for a foggy or hazy appearance between the window panes. This indicates that the seal between the two panes of glass has been broken and water is entering your living spaces. The first step is to remove the glazing beads from around the edges of your window. This can be tricky and a bit messy, but it's worth the effort as it lets you access the gasket that holds your glass in place. You will need to remove the beads with care so that they don't break and it is often an excellent idea to ask for help at this point. Once the beads are removed then allow the sealed unit a little to fall out of the frame. With a helper to hold it in place while you accurately take measurements of its size, height and width. This is crucial because it will determine the size wedge gasket you will need to cut for your brand new double glazed sealed units. Checking Double glazing units or sealed units, as they are often called, can degrade over time. This normally occurs due to a breach in the seal that allows condensation and moisture to infiltrate the space between the panes. This will affect the ability of the window to keep cold air out, warm air produced by the heating system in and solar gain from the sun's rays inside. Seal failure can also cause draughts to be felt within the home. It is essential to regularly check your double glazed windows for indications of failure. The presence of mist or moisture between the glass is an indication that the seal has failed and a replacement unit is required. If you must replace a sealed unit, it is essential that the new unit is the correct size to fit. The uPVC frames in which the sealed unit is set in have a very limited tolerance for movement, so even just a few millimetres over could affect the performance of the window. Talk to a professional or consult the guide supplied by the manufacturer to ensure that you order the correct size. Place the new unit into the frame with the help of a friend. It is essential that you do this in a secure place since the glass is fragile and may fall out and break. Once the sealed unit is fixed to the frame, reattach any packers on the bottom of the frame, and then reinstall the glazing beads into their original position. Once you have done this give the entire window a thorough inspection to ensure there are no gaps or areas of misalignment that could affect its performance. It is possible to apply a small amount of sealant around the perimeter of the frame to prevent it from moving. Reviewing the thickness of the unit is recommended. Double-glazed units come in various thicknesses. If you choose the wrong one, it can have a negative impact on the u value of your home. Sealing Double glazing can improve the thermal efficiency of your home, and improve acoustics. However, over time the seals in the glass can get worn out, leading to misty windows and a decrease in performance. In these instances replacement is required. It's a good idea to employ a double glazing expert who can assist you in selecting the most suitable glass products, make precise measurements and ensure proper installation. The first thing that needs to be done when replacing the sealed unit is to clean the frame. You can make use of an old paintbrush (4 inches is the ideal size) to sweep the frame out, removing dust and cobwebs that will accumulate within the frame over time. It's a good idea to clean the new seals after the frame has been cleaned. It is easy to remove the wedge gaskets from the friction joint by placing your hands on the edge of the gasket and pulling it out. You should also take a note of the length that you require for your new seals as it will help when cutting them to size. Once the gaskets are clean and the frame is clean, it's time to install the sealed unit. It's a good idea take off the beads (the UPVC frames clips that hold the glasses) and then measure them. This will ensure that the seal is made to the correct size and will not leave any gaps around it. After the beads are put back in, you can begin with the top one and work your way down to the other. You should be careful not to touch your sealed units for a few minutes afterward as the silicone sealant will need some time to set and harden before you are able to handle it again. I typically leave it for about 6 hours prior to handling but this could depend on the silicone sealant's set times. Finishing After the double-glazed unit is snugly in place within its frame and is sealed, it's time to seal and finish. This is more than a physical conclusion to the project; it's an affirmation that your home is now ready to withstand the elements with a new safe guardian in the right place. The first step is cleaning the frame and taking out any glazing beads, strips or other materials that were used to fix the old glass. The frame is then cleaned of dirt, old sealant and glazing tape. This process also renews the timber frame or aluminium frame. This is also the time to make any minor repairs using wood filler and sanding, in the event that it is necessary. If you have a major issue, you should consult a professional. The tubes that are used as spacers are filled with desiccants in order to absorb any moisture that might be trapped in-between the two panes of glass during the process of manufacturing or after time. This is a standard procedure for warm edge sealed units. Thermoseal Group stocks a range of desiccants as well as manual or automated dispensers of desiccant. After the spacers are filled with glass, it is sealed with a highly-performing silicone that is designed to withstand Australia's harsh environment. This sealant creates an airtight seal that is both flexible and durable, and can expand and contract without breaking. It's crucial to select the right thickness, as any gaps could affect the thermal performance. Ask a professional for advice or refer to the manufacturer's manual for more information on the right thickness for your. The final step involves adding secondary sealant. It is typically polyisobutylene, or a similar substance. It is applied to the outside edges of frames to create a secondary seal. replacement sealed units cost repairmywindowsanddoors is able to repel moisture and prevent air infiltration, thereby increasing the efficiency of energy. The frame is completed with aluminum cladding. It's a protective coating that is resistant to the elements, keeping your frame looking like new for many years to come. This is a wise investment to ensure the longevity and the beauty of your home's frames, especially if you have federation or period homes with wooden frames that are prone to decay.