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Replacement Double Glazed Units Double glazed units, or sealed units, as they're known, can get worn out over time. This happens because the insulating properties of the inert gases between the glass panes degrade. If a window has been damaged down, it's crucial to replace the window to ensure that your home is well-insulated and energy efficient. The task is relatively easy and straightforward. Installation If the window is properly installed, the new window will be firmly seated and sit comfortably inside the frame. If the new glazed panel is not the same thickness as the old one, you may have to adjust the 'packers (usually blue or red plastic slips) in the frame. Ask your installer for instructions of the manufacturer if you're uncertain. A high-quality replacement double-glazed sealed unit is made to the highest standards and should fit in your frame with a minimum of hassle. A tiny mistake could have a major impact on the performance of your window. replacing sealed units -glazed units are a great energy efficient addition to any home. They use a layer of argon gas between the panes to provide insulation and reduce the amount of heat that could escape from your home during cold winter months. However, sometimes these units fail or have problems with their seals. This occurs when moisture enters the air cavity and results in condensation. The moisture that is absorbed by the window's cavity is not only unsightly but also affects the effectiveness and efficiency of the glass unit. Condensation can be caused by a range of causes. The best method to test for it is to look for a foggy or misty appearance between the window panes. This is an indication that the seal between the two panes has broken and moisture is leaking in to your living space. The first step to take is to take the glazing beads off around the edges of your window. It's difficult and messy, but it is worth it as you will have access to the gasket for wedges that holds the glass in place. You will need to remove the beads with care to ensure that they do not break and it's often recommended to seek assistance at this point. After the beads have been removed, allow the sealed unit to fall back slightly out of the frame. Then, using help from a person, keep it in position while you precisely measure the length, width and the thickness. This information is vital as it will help you determine the size wedge gasket to cut for your newly double-glazed sealed units. Checking Double glazing units or sealed units as they are usually called, may break down over time. This is usually because of a crack in the seal, which allows condensation and moisture to get into the space between the panes. This can affect the way the window can keep out cold air, heat generated by the heating system inside the home and solar gain inside. The failure of seals can cause draughts in the home. Double glazed windows should be inspected frequently for signs of failure. If you notice moisture or mists between the glass, it is an indication that the seal is failing and a new one should be installed. It is important that you replace the sealed unit with the correct size. The uPVC frames on which the sealed unit is positioned have a very limited tolerance for movement, so even a few millimetres can impact the performance of the windows. To ensure that you are ordering the right size it is recommended to speak with a professional or the manufacturer's manual. With the help of a person who holds the new unit gently place it in the frame. This must be done in a secure location as the glass could break if it falls out. After the sealed unit is secured in the frame, reconnect any packers that are at the bottom of the frame, and then put the glass beads back in their original position. Once you've done this, give the whole window a visual examination to make sure there aren't any gaps or misalignments that could compromise its performance. It is also possible to add a bead of sealant to the perimeter edge of the frame in order to prevent it from shifting in the future. It is also a good idea to re-check the thickness of the glass unit. 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 is a fantastic way to improve your home's thermal efficiency and improve audio quality by decreasing the transfer of sound. Over time, the seals on the glass may get worn out, leading to windows that are drooping or misty. In these instances, replacement is necessary. It is recommended to collaborate with an experienced double glazing contractor who can assist you in selecting the right glass products, ensure accurate measurements, and ensure proper installation. The first thing to be done when replacing a sealed unit is to clean the frame. You can make use of an old paint brush (4 inch is ideal) to clean the frame to remove dust and cobwebs that will have built up within the frame over time. When the frame is clean, it's a good idea to give the seals that are new a thorough clean too. The easiest way to do this is to remove the Wedge gaskets by putting your fingers on the edge and then pulling it out at the point where it overlaps with the friction joint. It is also important to make notes of the length you require for your new seals since it will be helpful in cutting them to the required size. After the gaskets have been cleaned 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 measure the size of them. This will ensure that the seal is made to the correct dimensions, and that there aren't any gaps around it. After the beads have been reinserted, you can start with the top one and work your way down to the others. Be cautious not to touch the sealed units for a while afterward as the silicone sealant will require time to set and harden before you are able to handle it again. I usually leave it for about 6 hours before handling but this could vary based on your silicone sealant's setting time. Finishing The sealing and finalization of the project is now required after the new double-glazed unit has been snugly installed within its frame. This step is more than just a physical closure to the work; it's an assurance that your home is prepared to face the elements with its brand new, secure guardian safely in the right place. The first step is cleaning the frame and removing any glazing beads, strips or other materials used to secure 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 window's frame. It's also a good time to look over any damages and make small repairs by using wood filler or sanding as needed. The most serious damage should be taken to a professional for repair. Next, the tubes that are used as spacers are filled with desiccants in order to absorb any moisture trapped in-between the two panes of glass during manufacture or over time. This is a common practice for warm edge sealed unit. Thermoseal Group stocks a range of desiccants, as well as manual and automated dispensers of desiccant. After the spacers have been filled, the glass and frame are sealed with a high-performance silicone specifically designed to withstand Australia's tough climate. The sealant creates a barrier that is both durable and flexible capable of expanding and contract without becoming fragile or breaking. It is crucial to choose the correct thickness as any gaps could affect thermal performance. Talk to a professional or consult the manufacturer's guide if you are unsure about the right thickness for your. The last step is to apply secondary sealant, which is typically polyisobutylene (PIB) or similar products. This is applied along the outside edges of frames to form a secondary seal. It is able to repel moisture and prevent air infiltration, thus increasing the efficiency of the energy. The frame is then finished with aluminum cladding. This protective coating can endure the elements and keep your frame looking new for many years. It is a wise investment to ensure the longevity and the beauty of your home's frames, particularly if you have period or federation style homes with wooden frames that are prone to decay.