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Replacement Double Glazed Units Over time, double-glazed units (or sealed units as they are commonly called) may break down. This is usually the case when the insulating properties of the inert gas that is between the glass panes degrade. If a window has fallen down, it is essential to replace the unit to ensure your home is well-insulated and energy efficient. The task is easy and straightforward. Installation If the window was installed correctly, the new window should be able to fit comfortably and securely inside the frame. If the new window isn't the same thickness as your old one, you may have to adjust the 'packers (usually blue or red plastic slips) inside the frame. Ask your installer for instructions from the manufacturer if you're uncertain. A top-quality replacement double-glazed sealed unit is constructed to exacting standards, and should fit your frame with ease. A minor mistake could have a major impact on your window's performance. Modern double-glazed units can be a great addition to any home. They are energy efficient and save you money. They use an argon gas layer 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 may break down or develop problems with their seals. This usually occurs when moisture enters the air cavity of the glass and creates 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 glazed unit. Condensation can be caused by a variety of factors and the best method to test for it is to look for a hazy or misty appearance between your window panes. This is a sign that the seal between the two panes of glass has broken down and moisture is leaking into your living spaces. The first thing to do is remove the glass beads that surround the edges of the window. It's difficult and messy, however it's worth it because you will be able to access the gasket for wedges that keeps your glass in place. It is necessary to remove the beads with care so that they don't break, and it's usually a good idea to ask for assistance at this point. Once the beads are removed allow the sealed unit to drop slightly out of the frame. Then, using an assistant, hold it in place while you accurately measure the height, width and the thickness. This is crucial as it will determine what size wedge gasket you need to cut for your newly double-glazed sealed units. Checking Double glazing units, or sealed units as they are commonly called, can degrade over time. It is usually due to a leak in the seal that allows condensation and moisture to enter the space between the panes. This can affect the capacity of the window to keep cold air out, and warm produced by the heating system in, and solar gain from the sun inside. A seal failure can cause draughts to be felt in the home. It is crucial to check regularly your double-glazed windows for signs of failure. If you notice moisture or mists between the glass, it is a sign that the seal is failing and a new one should be installed. If you must replace a sealed unit, it is vital that the new unit is of the right size to fit. The uPVC frames in which the sealed unit is installed have a very small tolerance for movement, meaning that even a few millimetres could alter the performance of windows. Consult a professional or the instructions that is provided by the manufacturer to ensure you purchase the right size. With a helper holding the new piece, gently slide it into place in the frame. This should be done in a secure area as the glass may break if it falls. After 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 into their original position. Once you have done this give the whole window a visual examination to make sure there are no gaps or areas of misalignment that could impact its performance. You may also need to apply a bit of sealant to the outer edge of the frame to prevent it from shifting in the future. Re-checking the thickness of the unit is a good thing to do. Double-glazed units come in different thicknesses. If you choose the wrong one, it can have a negative impact on the value of your home. Sealing Double glazing is a great option to boost the efficiency of your home's heating system and provide improved sound quality by reducing the transfer of sound. However, with time, the glass's seals may wear down resulting in misted windows and a decrease in performance. In these instances, replacement is necessary. It is a good idea to employ a double glazing expert who can help you choose the best glass products, take accurate measurements and ensure that the installation is done correctly. If you are replacing a sealed unit the first thing you need to do is clean the frame. Use a paintbrush from the past (4 inches is the best) to scrub the frame, taking off dust that has accumulated over time. It's a great idea clean the seals that have been installed after the frame has been cleaned. It is easy to remove the wedge gaskets from the friction joint by placing your fingers along the edge of the gasket and pulling it away. You should also make an outline of the length that you need for your new seals since it will be useful when cutting them to size. Once the gaskets are cleaned and the frame is clean, it's time to install the sealed unit. To ensure the best results from this, it's best to prise out the beads (the UPVC frame clips that hold the glass) and then take measurements of these. This will ensure that the seal is constructed according to the correct dimensions and will not leave any gaps around it. After the beads are in place you can insert the top bead and then move on to the next three. After sealing the units, you should not touch them for a few hours because the silicone sealant must set and harden. I typically wait 6 hours before handling it, but the silicone sealant's setting time can vary. Finalization After the double-glazed unit is snugly in place within its frame and is sealed, it's time to seal and finish. This step is not just an aesthetic finish to the project, but also a statement that your home will be ready to weather the elements now that its new safe guardian is installed. The first step involves cleaning the frame and taking out any glazing beads, strips or other materials used to secure the old glass. The frame is free of dust and old sealant as well as glazing tape, a process that also revitalizes the wood or aluminium of the frame of the window. It's also a good opportunity to evaluate any damages and make small repairs using wood filler or sanding if necessary. For major damage, you should consult an expert. Next, the spacer tubes are filled with desiccants to adsorb any moisture that might be trapped between the two panes of glass during manufacture or over 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 for desiccant. After the spacers are filled with glass, the frame and glass are sealed with a high-performance silicone designed to tolerate Australia's harsh climate. This sealant forms an airtight barrier that's extremely flexible and durable that can expand and contract without breaking. It is crucial to choose the correct thickness as any gaps could affect thermal performance. Talk to a professional or consult the manual of the manufacturer if you are unsure about the thickness you should use. The final step involves adding secondary sealant. It is typically polyisobutylene or a similar material. This is applied along the edges of frames to create an additional seal. patio door seal replacement will ward off moisture and prevent air infiltration, thus increasing the efficiency of energy. The frame is then finished with an aluminum cladding. This protective coating will withstand the weather and keep your frame looking new for many years. It is a wise investment for the long-term integrity and beauty of your home's frames, particularly if have period or federation style homes that have timber frames that are susceptible to rot.