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Replacement Double Glazed Units Over time, double glazed units (or sealed units as they are commonly called) will break down. This happens when the insulating properties of the gasses that insulate the glass panes break down. It is essential to replace a damaged or broken window to ensure that your home is fully energy efficient and insulated. Fortunately the task is relatively simple and easy to complete at home. Installation If the window has been installed correctly the new unit will fit snugly and fit snugly inside the frame. If the new unit is not of the same thickness as the older one, then you might need to alter the 'packers' (usually red or blue slips of plastic) inside the frame to ensure it is properly placed. If you're not sure how to proceed, consult your installer or the manufacturer's instructions for guidance. A high-quality replacement double-glazed unit is constructed to exacting standards and should fit in your frame with no hassle. A small mistake can have an enormous impact on the performance of your window, and should be examined attentively. Modern double-glazed units are an energy efficient addition to any home. They are constructed with an argon gas layer between the panes in order to insulate and thereby reduce the amount of heat that can escape your property during cold winter months. However, there are times when these units break down or develop problems with their seals. This usually occurs when moisture enters the air space of the glass and creates condensation between the panes. The moisture that is absorbed by the window's cavity is not only unsightly but also decreases the effectiveness and efficiency of the glazed unit. You can spot a cloudy or misty look between the window panes. This is an indication that the seal between two panes is been broken and water is flowing into your living space. The first step to take is to take the glazing beads off around the edges of your window. This can be difficult and messy but is well worth the effort as it allows you to access the wedge gasket that keeps your glass in place. It is essential to take care when removing the beads so that they don't fall off. Asking for help can be helpful at this stage. After the beads have been removed then allow the sealed unit to loosen a bit of the frame. With the help of a person, hold it in place while you measure its width, height and thickness. This is crucial as it will help you determine the size wedge gasket to cut for your brand new double glazed sealed units. Checking Double glazing units, or sealed units as they are often referred to they can break down over time. This normally occurs because of a crack in the seal, which allows condensation and moisture to enter the space between the panes. This affects how the window is able to block out cold air, heat produced by the heating system inside the home, and solar gain inside the window. Seal failure can also cause draughts within the home. Double-glazed windows should be examined regularly for indications of failure. If you see water or misting between the glass, it is a sign that the seal is not working and a replacement unit must be installed. If you do need to replace a sealed unit it is crucial that the new one is the correct size to fit. The uPVC frames in which the sealed unit is positioned have a tiny tolerance for movement, meaning that even a few millimetres of movement can alter the performance of windows. To be certain that you're getting the right size, it's recommended to speak with a professional or the manufacturer's manual. With the help of a person who holds the new piece, gently place it in the frame. It is crucial to place it in a secure spot because the glass is fragile and could break or fall out. Once the sealed unit is fixed to the frame, reattach any packers on the bottom of the frame and then reinstall the glass beads in their original position. Once you've completed this make sure you give the window an extensive visual inspection to ensure that there are no gaps, and that it isn't misaligned. You may also need to add a bead of sealant around the perimeter edge of the frame to prevent it from shifting in the future. double glazing sealed unit replacement is recommended to check the thickness of the glass unit. This is important as double glazed units are available in various thicknesses and a wrong thickness can affect the u-value of your home's insulation. Sealing Double glazing can improve the efficiency of your home and provide better acoustics. Over time the seals of the glass may be worn out, resulting in condensation or drooping windows. In these instances replacement is required. It is recommended to consult an experienced double glazing installer who can assist you in selecting the right glass products as well as ensure precise measurements, and ensure proper installation. If you are replacing a sealed unit the first thing you need to do is clean the frame. Make use of an old paintbrush (4 inches is the ideal size) to clean the frame, taking off dust that has built up over time. It's a great idea to clean the seals that have been installed after the frame has been cleaned. It is easiest to remove gaskets for the wedge from the friction joint by placing your fingers on the edge of the gasket and pulling it away. Take note of the length of time you'll need the new seals. This will assist when cutting them. After the gaskets have been cleaned and the frame cleaned up it's time for the sealed unit. It's a great idea to take off the beads (the UPVC frames clips that are used to hold the glasses) and then measure the size of them. This will ensure the seal is constructed to the correct size and ensure there aren't any gaps around it. Once the beads are back in place, you can put in the top bead and then work your way round to the other three. Be careful not to touch the sealed units for a while 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, but the sealant setting time will vary. Finishing Sealing and finishing the project is now required once the new double-glazed unit has been installed securely within its frame. This step is not only a physical finishing touch to the project it also signifies that your home is prepared to withstand the elements after the new secured guardian is in place. The first step is to clean the frame, taking care to remove any glazing strips or beads that bonded the old glass. The frame is then cleaned of dust, old sealant, and glazing tape, a process that also rejuvenates the timber or aluminium of the frame of the window. It's also a good opportunity to evaluate any damaged areas and make minor repairs using wood filler or sanding if required. Major damage should be referred to an expert to repair. The spacer tubes are then be filled with desiccants to absorb any moisture that may be trapped between the two panes in the process of manufacturing or over time. This is a common practice for a warm edge sealed unit. Thermoseal Group stocks a range of desiccants as well as manual or automated dispensers for desiccant. After the spacers have been filled with glass, it is sealed with a high-performance silicone that is designed to withstand the harsh conditions of Australia's climate. This sealant forms an airtight seal that is extremely flexible and durable and can expand and contract without breaking. It is important to use the correct thickness as any gaps can affect thermal performance. If you're unsure of the correct thickness to use, consult with an expert or the manufacturer's guidelines. The final step involves adding secondary sealant. It is typically polyisobutylene, or a similar substance. It's applied to edges of the frame's exterior, where it creates a secondary seal that's able to repel moisture and block air from entering which can improve energy efficiency. The frame is then adorned with an aluminum cladding. This is a protective coating that is able to withstand the elements, keeping your frame looking new for many years to be. It is a wise investment to ensure the durability and the beauty of your home's frames, especially if you have federation or period style homes with wooden frames that are susceptible to decay.