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Replacing Double Glazed Units Double glazed units can be replaced to lessen heat loss and noise, and also reduce heating costs. Modern coatings and argon/krypton gas filled units make them extremely energy efficient. The new unit, made to exact measurements, is waiting for its time and requires care and precision. This is the moment that halts time and puts everything into perspective. Remove the Old Unit The removal of the old unit is a critical step that will help ensure your new double-glazed window is built to precise measurements. Clean the frame thoroughly of dust, dirt or old sealant and repair any damage that may be present. Wood filler and sanding can be used to repair minor damage however major damage could need professional repair. After the glass has been removed, it is essential to measure its width, height, and thickness. This can be accomplished by removing the glazing beads that support the unit. This is a delicate process that requires patience and prudence. It is recommended to take your time and make sure to wear safety gear to safeguard yourself from unexpected shards of glass and accidental slips. Begin by removing the bottom of the glazing strip using the sharp end of a chisel or a wide-bladed screwdriver. After the bead is removed, it is advisable to get help from someone who can hold the sealed unit while you take out the remaining beads. The unit is prone to fall from the frame and break. After you have removed all the beads, it is important to measure the width, height, and the thickness of the existing unit. The measurements can be used to precisely design an appropriate replacement unit for your home. It will also serve as a guideline to ensure that the new unit is constructed correctly for the frame. This is important because a misfit will not only cause the need to dismantle and reassemble the entire window but also affect the efficiency and performance of the window. This is especially important in Australia where homes are often exposed to extreme weather conditions. Preparing the Frame If you are replacing a fixed sliding door or window that has an opening or fixed sash, ensure that the new unit is of the correct size. UPVC frames have very little movement, and a double-glazed sealed unit that is just a couple of millimeters too big will not work. To ensure precise measurements take care to measure accurately and consult a professional. When you have a clear idea of the dimensions of your replacement, and you are sure it's properly fitted remove the glass from its frame. Wear safety equipment such as gloves and work in a place that is well-lit to avoid injury from glass shattering. Utilize a putty knife to cut off the glaze strips or beads that secure the glass into the frame, and remove them from the perimeter of the pane. You should avoid slipping the glass or straining frame. Make sure the frame can be opened and closed smoothly after the new double-glazing unit sealed is installed. It should be a good fit, however you can alter this if needed by adding or removing packing. For instance, if the frame is a sliding door you may need to add additional packers on the hinge's side and in the opposite corners to stop the sash from colliding or rattle when it opens. Finally, clean up the frame and get rid of any old glaze tape or sealant in the event of need. Examine any damage and make minor repairs, if needed, by using wood filler or sanding. A final inspection and cleaning will prepare the frame for your replacement, and will give it a fresh look for a lifetime of enduring protection from Australia's harsh climate. Lifting the New Unit Over time double glazed sealed units (or a sealed unit as it is commonly called) may face issues such as moisture in-between panes and/or misting. If this happens, the efficiency of your window is compromised and allows cold air to enter and letting warm air from your heating system to escape and causing the cost of energy and the loss of comfort. window seal replacement of seal failure is typically caused by aging general wear and tear or harsh chemical cleaners that deteriorate the sealing material. However, in some cases, the reason is due to shrinking and expansion of the glass during the changing seasons and temperature changes in the home. Once the frame is cleaned and ready then you can move the new unit into place. This is an exciting step because you've made a significant improvement to your home, increasing its temperature in the winter months and cooling it in summer, whilst also helping to reduce the cost of energy. It's important to make sure the new piece fits in the frame prior to locking it to the frame. This phase is important to ensure that the frame isn't damaged and the glass. If you are using glazing tape or sealing tape on your windows, now is the perfect time to put a small bead around the perimeter of the glass. This creates a strong barrier that will prevent air and moisture from getting into the window. Apply the sealant with care and ensure it's secure but not tight enough to strain the glass or frame. Enjoy your newly-installed double-glazed windows and give yourself a pat on the back for a job well done! Secure the Unit This is the time when your work is complete. The unit will be snugly set in the frame and a new sealant will be applied around its perimeter. The unit is now secured to withstand the varying weather conditions of Australia and ensure warmth in winter and coolness in summer. This is the moment when your meticulous measurements and removal is confirmed, a confirmation that a unit was built to exact dimensions. It is crucial to find the ideal balance between securing the unit without stressing the glass. If it's too loose, then the unit may lose its airtight seal. If it's too tight, it might damage the frame or warp the material. Each screw must be placed in its original position, and rotated just enough to secure the unit without applying excessive pressure. This is the final stage in a transformational plan that improves a home's comfort as well as energy efficiency and appearance. With the new double glazed unit sitting snugly in the frame and securing an all-new layer of sealant around the perimeter it is the moment that marks the end of your work. The insulating cavity between panes of glass is filled with either argon gas or a desiccant. Argon, unlike air has a lower thermal conductivity, which decreases heat transfer. Additionally, a desiccant adsorbs water in the atmosphere, stopping mould and condensation from growing within the frame. The spacer bar that is usually made of aluminum, is an essential component of the insulating system. The aluminum bar not only blocks heat transfer, but also keeps the edge of the window insulated to prevent condensation. Checking Your Work When you've installed the new unit and put an ounce of silicone sealant to the edge It is crucial to let it sit and set – don't handle it! It will take at minimum four hours for the silicone sealant to attain its maximum strength and form an impenetrable barrier. While you are waiting, take the time to examine your work visually and see if you can identify any gaps or issues that could impact the efficiency or appearance of the unit. This is also a great moment to inspect the seals and frame for signs of damage that require attention, and to assess whether replacement of the entire window is required. A damaged seal can have a huge impact on the energy efficiency of your home, leading to cold spots and drafts. It can also permit ultraviolet rays into the house, causing fading of furniture and reducing the life of carpets and curtains. If you're experiencing any of these problems this could be a sign that your double glazing is in need of replacing. It will help you save money on your energy bills, and create a more relaxed and comfortable home. Replacing a double glazed sealed unit is a labour intensive and technical procedure that requires the right equipment, careful preparation and precise measuring. It is not an DIY project and should be done by a professional with expertise with uPVC Windows and Doors. They will ensure that the replacement unit is installed correctly to shield your home from the elements. Their experience and expertise will ensure that your double-glazed unit is quiet and effective combination of warmth during winter and coolness during summer, shielding your home from the elements.