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Replacement Double Glazed Units Double-glazed units, also known as sealed units, as they're called, may wear out over time. This happens when the insulating properties of inert gases that are a part of the glass panes are broken down. It is crucial to replace a broken window to ensure that your home is energy efficient and well-insulated. The task is relatively simple and straightforward. Installation If the window has been properly installed, the new window will fit snugly and sit comfortably inside the frame. If the new window is not the same size as your old one, you may have to adjust the 'packers' (usually blue or red plastic slips) inside the frame. Check with your installer or the instructions of the manufacturer if you're not sure. A good quality replacement double glazed sealed unit will be made to exacting standards and will fit into your frame with the least amount of hassle. A tiny mistake can have a significant impact on the performance of your window. Modern double-glazed units are a great energy efficient addition to any home. They use a layer argon between the panes of glass to keep them warm and cut down on the amount of heat that escapes from your home during cold winter. Sometimes, these units can develop issues with their seals. This is usually the case when moisture is introduced into the air cavity of the glass, causing condensation between the panes. The presence of moisture in the window's cavity is not just unsightly, but also decreases the effectiveness and efficiency of the glass unit. Condensation can be caused by a variety of causes. The most effective method to determine the cause is to look for a foggy or misty appearance between the window panes. This indicates that the seal between the two panes of glass has been broken and moisture is leaking into your living spaces. The first step to take is to take the glazing beads off around the edges of your window. It can be a bit difficult and messy, however it's worth it because you will have access to the wedge gasket that holds the glass in place. It is crucial to remove the beads carefully to ensure they don't break. It is advisable to ask for help. be a good idea at this stage. After the beads have been removed, allow the sealed unit to fall slightly out of the frame. With a helper hold it in place while you accurately measure the height, width and the thickness. This information is essential as it will determine the size of the wedge gasket that you will need to cut for the brand new double-glazed sealed unit. Checking Double glazing units, or sealed units, as they are often called, may break down over time. This is usually due to a break in the seal which allows condensation and moisture to get into the space between the panes. This affects how the window can keep out cold air, heat produced by the heating system within the home and solar gain inside. A faulty seal can also cause draughts within the home. Double glazed windows should be examined often for signs of failure. If you see water or misting between the glass, this is an indication that the seal is not working and a new unit 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 that the sealed unit sits in are not tolerant of movement, so even tiny millimetres of excess can have an impact on the performance of the window. To be certain that you're ordering the right size it is best to consult an expert or the manufacturer's manual. With the help of a friend holding the new unit, gently place it in the frame. This should be done in a secure location as the glass could break if it falls. Once the sealed unit is secured in the frame re-attach any packers on the bottom of the frame, and then put the glazing beads back in their original positions. Once you've done this, give the entire window a thorough examination to ensure that there aren't any gaps or misalignments that could compromise its performance. You may need to add a small amount of sealant around the perimeter of the frame to stop it from moving. Checking the thickness of the unit is also a good thing to do. This is important as double-glazed units come in different thicknesses, and using the wrong thickness can impact the u-value your home's insulation. Sealing Double glazing can boost the thermal efficiency of your home and also improve audio. Over time, the seals on the glass can wear out resulting in condensation or drooping windows. In these instances it is necessary to replace the glass. It is recommended for you to work with an experienced double glazing installer who can help you choose the best glass products, ensure accurate measurements and ensure that the installation is done correctly. The first thing to be done when replacing a sealed unit is to clean the frame. Use a paintbrush from the past (4 inches is the best) to clean the frame, taking off dust that has accumulated over time. It's a good idea to clean the new seals once the frame has been cleaned. Repair My Windows And Doors to do this is to pull out the Wedge gaskets by placing your fingers on the edge and then pulling it out at the point where it is in contact with the friction joint. Take note of the length of time you'll need the new seals. This will assist when cutting them. Installation of the sealed unit is simple after the gaskets and frame have been cleaned. It's a good idea remove the beads (the UPVC frames clips that hold the glasses) and measure the size of them. This will ensure the seal is made to the right size, and that there aren't any gaps around it. After the beads are put back in, you can begin with the top one and move to the lower ones. You should be careful not to touch the sealed units for a long time following the sealing process as the silicone will require time to set and harden before you can use it again. I usually leave it for about 6 hours before handling but this could differ based on your silicone sealant's set times. Finalization The sealing and finalization of the project is now required after the double-glazed unit has been snugly installed within its frame. This is more than a physical closure to the work; it's an assurance that your house is prepared to face the elements with its new, secure guardian safely in 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. Then, the frame is cleaned of dirt and sealants that have been used for years, as well as glazing tape, a process that also revitalizes the wood or aluminium of the window's frame. It's also a good time to assess any damaged areas and make minor repairs using wood filler or sanding as needed. Damages that are severe should be reported to a professional for repair. The tubes for the spacer are filled with desiccants to adsorb any moisture trapped between the two panes of glass during the process of manufacturing or after time. This is the standard procedure for warm edge sealed unit. Thermoseal Group stocks a range of desiccants and manual or automatic desiccant dispensers. After the spacers are filled, the glass is sealed with a high performance silicone that's designed to withstand Australia's harsh climate. This sealant forms a barrier that's durable and flexible capable of expanding and contract without becoming fragile or breaking. It is important to use the right thickness, as any gaps could impact the thermal performance. Talk to a professional or consult the manufacturer's guide if you are unsure about the thickness you should use. The final step is adding secondary sealant. It is typically polyisobutylene, or a similar substance. It's applied to the outside edges of the frame and creates a secondary seal that's capable of repelling moisture and prevent air penetration which can increase the efficiency of energy. The frame is then adorned with an aluminum cladding. It's a protective coating that can withstand the elements, keeping your frame looking brand new for many years to be. It is a wise investment to ensure the durability and beauty of your home's frames, particularly if you have federation or period style homes with timber frames that are prone to get rotted.