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Replacement Double Glazed Units Double glazed units, or sealed units as they're also called, will wear out over time. This typically happens when the insulating properties of the inert gas between glass panes break down. It is crucial to replace a broken window to ensure that your home is energy efficient and insulated. The task is simple and straightforward. Installation If the window has been installed correctly the new unit will fit snugly and sit comfortably inside the frame. If the new unit isn't the same thickness as the old one, you may have to adjust the existing “packers” (usually blue or red slips of plastic) inside the frame to ensure that it sits properly. Check with your installer or the instructions of the manufacturer if you're uncertain. A high-quality replacement double-glazed window is manufactured to the highest standards and should fit into your frame with minimal fuss. A minor mistake can have a huge 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 utilize the argon gas between the panes to provide insulation and reduce the amount of heat that will escape your home in cold weather. However, in some cases, these units break down or develop problems with their seals. This typically happens when moisture is introduced into the air space of the glass and causes condensation between the panes. Moisture in the window's cavity is not only unsightly but also affects the effectiveness and efficiency of the glazed unit. Condensation can be caused by a variety of factors and the best method to determine the cause is to look for a cloudy or misty appearance between your window panes. This indicates that the seal between the two glass panes has been broken and moisture is flowing into your living spaces. The first thing to do is to remove the glazing beads around the edges of the window. It can be a bit difficult and messy, but it is worth the effort because you will be able to access the wedge gasket that holds the glass in place. You'll need to take off the beads with care to ensure that they don't break and it's often recommended to ask for assistance at this point. Once the beads have been removed, allow the sealed unit to loosen a bit of the frame. With a helper, hold it in place while you accurately measure its length, width and height. This is crucial as it will determine what size wedge gasket you need to cut for your brand new double-glazed sealed units. Checking Double glazing units or sealed units as they are commonly called, can break down over time. This is usually due to a break 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 generated by the heating system inside the home and solar gain inside. A faulty seal can also result in draughts being felt within the home. It is crucial to check regularly your double glazed windows for indications of failure. If you see water or mist forming between the glass, this is an indication that the seal is not working and a new unit should be installed. It is essential to replace the sealed unit with the proper size. The uPVC frames in which the sealed unit is positioned have a tiny tolerance for movement, so even a few millimetres can impact the performance of the windows. Talk to a professional or consult the guidelines provided by the manufacturer to ensure you get the correct size. With the help of a friend holding the new unit, gently move it into the frame. This must be done in a secure area as the glass may break if it falls out. Once the sealed unit is secure in the frame re-attach any packers on the bottom of the frame, and then put the glazing beads back into their original position. After you've completed this make sure you give the window an inspection thoroughly to ensure that there are no gaps and that it is not misaligned. You may need to add some sealant around the edges of the frame in order to prevent it from moving. Checking the thickness of the unit is an excellent thing to do. Double-glazed units come in different thicknesses. Using the wrong one can have a negative impact on the value of your home. Sealing Double glazing can improve the thermal efficiency of your home, and offer better acoustics. Over time the seals on the glass can wear out resulting in windows that are drooping or misty. In these situations it is necessary to replace the glass. It is recommended for you to work with an experienced double glazing contractor who can assist you in selecting the best glass products as well as ensure precise measurements and ensure proper installations. If you are replacing a sealed unit the first step is clean the frame. You can use an old paint brush (4 inches is the ideal size) to sweep the frame out, removing dust and cobwebs which build up in the frame over time. It's a great idea to clean the new seals after the frame has been cleaned. It is easiest to remove the gaskets that are wedge-shaped from the friction joint by placing your fingers on the edge of the gasket and pulling it out. Note down the time frame you'll need to use your new seals. This will assist when cutting them. Installing the sealed unit is straightforward once the frame and gaskets have been cleaned. To get the best results from this, it's best to prise out the beads (the UPVC frame clips that are used to hold the glass) and then take measurements of these. This will ensure that the seal is constructed to the correct size and won't leave any gaps around it. Once the beads are back in place you can insert the top bead, and then proceed to the next three. You should be careful not to touch your sealed units for a long time following the sealing process as the silicone needs time to set and become hard before you can use it again. I typically wait around 6 hours to handle it, but the silicone sealant's setting time can vary. Finalization Once the new double glazed unit is secure within its frame, it's time to seal and finish. This is more than a physical conclusion to the project; it's an assurance that your home is prepared to face the elements with its brand new secure guardian securely in the right place. The first step is to clean the frame taking care to remove any glazing beads or strips that secured the old glass. The frame is then cleaned of dirt, old sealant, and glazing tape, a procedure which also renews the timber or aluminium of the frame of the window. It's also a good opportunity to look over any damage and make small repairs by using wood filler or sanding when required. For major damage it is recommended to consult a professional. The spacer tubes are then be filled with desiccants to absorb any moisture that may have accumulated between the two panes during production or over time. This is a standard procedure for units with warm edges. Thermoseal Group stocks a range of desiccants as well as manual or automatic desiccant dispensers. After the spacers are 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's both strong and flexible, able to expand and contract without becoming brittle or breaking. It is important to use the correct thickness as any gaps could impact the thermal performance. Ask a professional for advice or refer to the manufacturer's manual if you are unsure about the thickness to use. patio door seal replacement is to apply a an additional sealant, usually polyisobutylene (PIB) or similar products. This is applied along the outside edges of frames to create a secondary seal. It is able to repel moisture and prevent air infiltration, improving energy efficiency. The frame is then finished with an aluminum cladding. This is a coating that is resistant to the elements, and keep your frame looking brand new for years to be. This is a smart investment to ensure the longevity and the beauty of your home's frames, particularly if have federation or period homes with timber frames that are susceptible to rot.