Replacing Double Glazed Units
Replacing double glazed units is a project for home improvement that can greatly reduce heat loss, increase insulation from noise and reduce heating bills. Modern coatings and argon/krypton gas-filled units make them very energy efficient.
The new unit, built to exact measurements, is awaiting its spot. It needs care and precision. This is the moment that halts the clock and puts everything into perspective.
Removal of the Old Unit
It is crucial to remove the old unit in order to ensure that the new double-glazed window has been built according to exact measurements. Clean the frame thoroughly of dust, dirt or old sealant, and then repair any damage that may be present. Wood filler and sanding can be used to repair minor damages, but major damage may require professional assistance.
Once the glass is removed, it's crucial to measure its height, width and thickness. This can be done by removing the glazing beads that hold the unit. This delicate process requires patience and caution. Be patient, and wear safety gear to avoid shards and slips.
Start by stripping the lower part of the glazing strip with a sharp chisel, or a wide-bladed, sharp screwdriver. It is best to ask someone to hold the sealed window unit while you remove all the beads. This is because the unit can easily fall out of the frame and break.
Once all the beads have been removed, it's important to measure the length, width and height of the existing unit. The measurements can be used to construct an appropriate replacement unit for your home. It can also be used as a guide to ensure that the new unit is constructed to fit the frame. It is crucial to ensure that the window fits properly, as a mismatch will not only need the entire unit to be disassembled and rebuilt, but also affect its performance. This is especially important in Australia where homes are frequently exposed to extreme weather conditions.
Preparing the Frame
If you are replacing a fixed sliding door or window with a sash fixed or an opening sash, make sure that the new unit is of the correct size. UPVC frames have little room for movement, and a sealed double glazing unit that is even a few millimeters too big is likely to not fit. Measure carefully and consult a professional or manufacturer's guide for any necessary measurements.
Once you have a clear understanding of the dimensions of the replacement and are confident that it's properly fitted take the glass out of its frame. Be sure to work in a well-lit location, and wear safety equipment such as gloves to avoid injuries from glass shards. Use a putty knife remove the glazing beads or strips, which secure the glass to the frame from around the perimeter of the pane. The glass is hard and you must be careful not to slip or straining the frame.

Once the frame is ready to receive the brand new sealed double glazing unit, make sure whether it is capable of opening and closing effortlessly. You can adjust the fit by removing or adding 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 corner to prevent the sash from catching or rattle when it opens.
Then, clean the frame. Take off any old glazing tape or sealant If necessary. Examine any damage and make minor repairs, if needed, by using wood filler or sanding. A final cleaning and inspection will prepare the frame for your replacement, rejuvenating it for long-term protection from Australia's harsh climate.
Lifting the New Unit
Over time, double-glazed sealed units can experience problems such as condensation between the panes or misting. If this happens, the effectiveness of your window can be diminished by letting cold air in and allowing warm air from your heating system out which can result in high energy bills and decrease in comfort.
This type of seal failure is usually caused by age or general wear and tear or harsh chemical cleaners that deteriorate the sealing material. Sometimes, the cause is simply down to shrinking and expanding of the glass during the changing seasons and changes in temperature in the home.
After the frame is clean and ready, you can begin to move the new unit up into its place. This is an exciting moment as you've improved the heating of your home in winter and cooling in summer months, while also cutting down on your energy costs.
Before securing the unit, it is crucial to make sure that the new unit fits properly into the frame. A little bit of care during this stage will help prevent any damage to the frame as well as the glass.
If your windows use glazing tape or sealant it's time to apply a small bead around the edges of the glass and frame, creating a strong barrier against moisture and air infiltration. Make sure to tighten the sealant carefully, ensuring it's secure but not tight enough to cause stress on the frame or glass. Don't forget to give yourself and a pat on the back for a job well done, and then enjoy your newly-installed double-glazed window!
Secure the Unit
This is when you are done. The unit will be securely placed in the frame and a fresh sealant will cover its perimeter. The unit is now secure to withstand the varying weather conditions of Australia and ensure warmth in the winter months and coolness in summer. This is the time when your meticulous measuring and removal are validated as a proof that the unit was crafted to exact dimensions.
Whether a window uses glass beads or screws fixing the new unit to the frame is an art of balancing tight enough to secure it and soft enough not to strain the glass. If it is too loose, then the window may be unable to seal its airtight. If it's not tight enough, it may damage the frame or warp material. Each screw must find its original location by turning only enough to ensure that the unit is held securely without applying undue pressure.
This is the final stage in a transformative project that improves a home's comfort and energy efficiency as well as its appearance. With the brand new double-glazed unit snugly seated in the frame and securing the fresh sealant around its perimeter, this is the moment that marks the end of your work.
websites between the glass panes is filled with the gas argon or with a desiccant. Unlike air, argon has significantly lower thermal conductivity and reduces heat transfer through glass. Desiccants also help to absorb moisture from the air, preventing mould and condensation in the frame. The spacer bar is made of aluminum and is an essential component of the insulation system. The aluminum bar not only blocks heat transfer, but also helps keep the edge warm of the insulated window to avoid condensation.
Be sure to check your work
When you've put up the new unit and applied an ounce of silicone sealant around the edges, it is important to leave it alone to set. Don't disturb it! It will take at minimum four hours for the silicone sealant to attain its maximum strength and form an impenetrable barrier. While you sit, take the time to look over your work and see if you are able to detect any gaps or issues that could impact the effectiveness or appearance of the device.
It's also a good time to inspect the seals and frame to determine if there are any signs of damage, and determine if the entire window requires replacement. A faulty seal can be a major factor in the efficiency of your home, leading to cold spots and drafts. It can also let ultraviolet rays in to the home, causing furniture to fade and carpets and curtains to wear faster.
If you're experiencing any of these problems, it is an indication that your double glazing is in need of replacing. It can help you save money on your energy bills and create a more relaxed and comfortable home.
Replacing a sealed double-glazed unit is a labour intensive and technical process that requires the right equipment, careful preparation and precise measurement. It is not an easy DIY project and should be undertaken by a professional who has prior experience with uPVC Windows and Doors. They will ensure that the replacement unit is fitted correctly to protect your home from the elements. Their expertise will ensure that the double-glazed unit you choose is quiet and efficient offering warmth during winter and coolness in summer. This will shield your home from the elements.