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What to Look For in a Double Glazing Sealed Unit Replacement Double glazing or sealed units as they are also known are prone to breaking down over time. It usually manifests as draught in the home. Lifting and placing the new unit is a delicate process that requires precision and care. The process of fitting the unit is an indication of how well you've prepared, and will guarantee peace and comfort at home. Measure Over time double glazing units (also called sealed units) can begin to fail, normally this is in the form of a draught, or by losing their air-tight seal. The gas (normally Argon, an inert gas) may leak from the panes due to shrinkage. The deterioration of seals could also be due to environmental factors such as exposure to direct sunlight, or the use of powerful chemical cleaning products that can cause damage to the glass and weaken seals. It is not unusual to observe an energy efficiency difference when the seal fails. This is why it's recommended to carry out a regular visual check of your double glazing. Another sign that is important that is in addition to looking for visible evidence of damage, is the feeling of a draft inside a room. This is the initial sign of the need for a replacement double-glazed unit as it is difficult to fix the issue after it has been established. It is important to measure the window correctly before replacing a double-glazed sealed unit. The UPVC frames they sit in are extremely stiff and if the unit is too big, it won't fit. To make this happen accurately, it is important to take the beads out and then measure them carefully. This will ensure the new sealed unit has the correct size. You can purchase replacement UPVC frame beads online from suppliers who offer a wide selection of warm edge options such as aluminium and steel. Remove If your double-glazed windows are showing signs of condensation, it is likely that the sealed unit has failed. This can easily be replaced with a new unit that will improve the efficiency of your home and will save you money on your heating bills. It is crucial to remove the old glass from the frame before commencing work to ensure the replacement glass will fit properly. This will also give you the opportunity to check the condition of the window frame, making sure that it is strong enough to hold the weight of the new glass. Begin by opening any vent or casement windows in the frame to reach the edge of the existing glass unit. Position your calipers on the frame and secure them against the existing unit to determine the thickness. This will give you the exact dimensions of your new sealed unit. Then, carefully cut the strip of adhesive that holds the glass in place with a utility knife. Once the adhesive strip has been removed then use a putty or shovel to gently pry the frame from the glass. Be aware that glass is brittle and may break if you put pressure on it. Be careful not to scratch or damage the frame or sealant. Then clean and prep the frame to accommodate the newly double-glazed sealed unit. If you're installing a brand new sealed unit, choose the right silicone caulk that will endure the harsh Australian weather without becoming brittle or flaky. A quality silicone sealant is also watertight, securing your property from water infiltration and making for the most durable, sturdy finish. Clean As time passes, the interior of double-glazed windows could become foggy or opaque. This is a sign that seals are failing, and that the window needs to be replaced. Condensation between the two panes could cause misted glass to form. This can cause the window to become fogged and may also cause the build up of stained areas between the panes. The only way to get rid of the condensation is to change the window. Once the old unit is removed the frame can be cleaned and prepped for a brand new sealed double-glazed unit replacement. Based on the design of the window, it may require to be primed or painted prior to the sealant is applied. It is important to allow any paint or varnish to dry completely before applying the new sealant. The existing window will require the beads removed before the new unit is installed. You can do this with the help of a screwdriver or a sharp chisel. The blade should be placed on the edge of the bead and gently pry it away from the frame. To avoid damaging the window frame, make a series of smaller cuts instead of a deep cut. Once you have removed your bead frame, lift it off of the glass and set it aside. Scrape any remaining sealant off the bottom surface of your glass with an instrument or knife. This will help ensure a good bond when the pane is re-sealed later. Once the glass has been cleaned, wash it on both sides to remove any residues. Fit Double glazing units that are sealed for replacement can be a cost-effective option to improve your home's comfort or reduce energy costs. Modern replacement units are more energy efficient than previous models and can be put in on the frame of your existing. They can also provide security benefits, as they may include glasses that are laminated and toughened. The most important factor to ensure a perfect fitting is precise measurements. A UPVC frame has a small tolerance. If you purchase a double-glazed unit a few millimeters bigger than the original, it will not seal properly. Take measurements of the width and height to avoid this problem. The seal of a double-glazed unit could fail for a variety of reasons but condensation between the two glass panes is one of the most common. This can lead to draught or unsightly calcium deposits on the glass. This is usually a sign that there's an issue with the gas filler within the sealed unit, or that moisture has made its way into the frame. After your new double-glazed unit has been securely in place and has been resealed and sealed, it's time to verify your work. This checking phase is more than just the physical end of your work; it's an opportunity for reflection and confirmation that your home is secured by its new guardian, prepared for whatever the Australian weather holds for it. While replacement sealed units for double glazed windows take time to take a moment to appreciate your work, take a deep breath and revel in the satisfaction of completing this final task. Your home will be protected by a sealant designed specifically for its intended use. Seal Double glazing seals prevent cold air and energy-generated heat from escaping your home. It's also a crucial part of keeping your home safe. If your window is fogging, it's a sign that the seal is breaking down. This is a sign that the unit can no longer function as it should and you'll need to replace it. Double-glazed units are made with two or more glass panes, separated by the spacer bar. The spacer bars are usually filled with desiccants which adsorb any moisture that may build up between the glass panes. The seal material could degrade during manufacture or over the lifespan of your windows. This is usually caused by environmental elements, such as direct sunlight, which can accelerate shrinkage of the seal, or by powerful chemical cleaners, which will damage the seal. A replacement double glazed unit will be constructed according to your exact measurements. Once the new sealed unit is installed into the window frame then it's time for resealing the edges of your windows. Ensure you are using the right silicone sealant that is suitable for the Australian climate and can withstand thermal expansion and contraction. When the silicone is applied to the side edge run your smoothing tool along it, pressing and squeeze the silicone onto the glass surfaces, this will remove any air bubbles, then fill gaps and ensure the seal is secure. Continue to do this on each edge until the entire length of the window has been re-sealed. It can be difficult to replace a double-glazed sealed unit however, with the right techniques and preparations it can be relatively simple and enjoyable. The final result will transform your living space, resulting in an inviting well-insulated and safe home that balances the cold in winter and the heat in summer. It will contribute to a more sustainable, safer Australia.