Replacing Double Glazed Units
Replacing double-glazed units is a project for home improvement which can significantly reduce heat loss, enhance the insulation of noise and reduce heating bills. Modern coatings and argon/krypton filled units make them very energy efficient.
The new unit, made to exact measurements, awaits its place and calls for attention and precision. This is the moment that stops time and puts everything into perspective.
Take the old unit out of the way
It is essential to take out the old window to ensure that your new double-glazed window is made to precise measurements. Make sure to clean the frame of any dirt, dust or old sealant, and then repair any damage that might be present. Repairs of minor amounts can be made by using wood filler or sanding but major damage might require professional repair.
Once the glass is removed, it is important to determine its width, height and thickness. This can be done by removing the glass beads that hold the unit. This is a delicate process that requires patience and care. Take your time, and wear safety gear to avoid shards and slips.
The best place to begin is by removing the bottom bead of the glazing strip, with a chisel that is sharp or a an abrasive screwdriver with a wide blade. It is recommended to have someone to hold the window unit as you remove all the beads. The unit could fall from the frame and break.
After all the beads have been removed, it's essential to carefully measure the dimensions of the width, height and thickness of the unit you have. The measurements to build an appropriate replacement unit. It also serves as a guideline to ensure that the new unit is sized to fit the frame. It is crucial to ensure that the window fits properly because a mismatch will not only need the entire unit to be taken apart and reassembled but will also reduce the performance of the unit. This is especially important in Australia where homes are frequently exposed to extreme weather conditions.
Preparing the Frame
Whether you are replacing a fixed window or a sliding door that has a fixed or opening sash, ensure that the new window is the right size. UPVC frames allow very little space for movement, and a sealed double glazing unit that's a few millimeters too large will simply not fit. To ensure accurate measurements take care to measure accurately and seek the advice of an expert.
When you have a clear idea of the dimensions of the replacement and are sure that it's fitted correctly take the glass out of its frame. Be sure to work in a well-lit location and wear protective equipment like gloves to prevent injuries from glass shards. Use a putty knife to pry the glazing beads or strips that hold the glass in the frame from around the edges of the pane. The glass is hard and you must be careful not to slip or stressing the frame.
When the frame is set to be sealed for the new double glazing unit, check that it will be in a position to open and close smoothly. It should be a good fit, however you can adjust this if necessary by adding or removing packers. For example, if the frame is a sliding door you may need to add additional packers at the top of the hinge's side and in the opposite corners to stop the sash from colliding or rattle when it opens.
Finally, clean the frame and remove any old sealant or glazing tape, as needed. Assess any damage, and make minor repairs if necessary by using wood filler or sanding. A final clean and inspection will make the frame ready for replacement, rejuvenating it for an extended period of protection from Australia's harsh climate.
Lifting the New Unit
Over time, double-glazed sealed units (or a 'sealed unit' as it is more commonly called) may face issues like moisture between panes or misting. When this happens the effectiveness of your window is diminished by letting cold air in and allowing warm air from your heating system to escape and causing higher energy bills and a decrease in comfort.
This type of failure in seals is typically caused by aging general wear and tear or harsh chemical cleaners that degrade the sealing material. Sometimes, the cause is simply down to shrinking and expansion of the glass during the changing seasons and the temperature fluctuations in the home.
Once the frame is clean and ready and clean, you can move the new unit onto the frame. This is an exciting step because you've created a positive impact on your home, enhancing its comfort during winter and cooling in the summer, while helping reduce your energy bills.
Before securing the unit, it is crucial to make sure that the new unit fits properly into the frame. This phase is important to avoid damaging the frame and the glass.
If your windows have glazing tape or sealant this is the perfect time to apply a bead around the perimeter of the glass and frame to create a solid protection against air and moisture infiltration. Make sure to tighten the sealant carefully making sure it's secure, but not too tight to strain the glass or frame. Finally, give yourself an ointment for a job well done and enjoy your newly installed double-glazed window!
Secure the Unit
With the new unit seated perfectly in the frame, and a fresh layer of sealant covering its entire perimeter, this is the moment to mark the end of your project. The unit is now secure to withstand Australia's varying weather conditions, providing for warmth in winter and cooling in summer. This is when your meticulous measuring and removal is validated and a confirmation that the unit was built according to the exact dimensions.
It is crucial to find the right balance between the need to secure the unit and not straining the glass. If it is too loose, then the unit may be unable to seal its airtight. If it's too tight, it may cause damage to the frame or weaken the material. Each screw should be put in its original place, and turned just enough to secure the unit without putting pressure too high.
This is the last step in a transformative project that enhances the comfort of a home, energy efficiency, and appearance. window seal replacement are complete, with the new double-glazed unit securely placed in the frame and a new bead adorning the perimeter.
The insulating cavity between panes of glass is filled either argon gas or a desiccant. Argon is, in contrast to air has a lower thermal conductivity which reduces heat transfer. Desiccants also adsorb moisture from the air, preventing mould and condensation in the frame. The spacer bar, which is typically made of aluminum, is an essential component of the insulating system. The aluminium prevents the transfer of heat, but also keeps the edges of the glass insulated warm to prevent condensation.
Checking Your Work
It is essential to allow the silicone sealant to set once you have installed the new unit. It will take at least four hours for the silicone sealant to attain its maximum strength and create an impenetrable wall. While you wait, visually assess your work to determine if there are any gaps or other issues which could affect the effectiveness or appearance.
This is also a great time to examine the seals and frame for signs of damage that require attention, and to determine whether replacement of the entire window is necessary. A faulty seal will have a significant impact on the efficiency of your home's energy usage, causing drafts or cold spots. It can also permit ultraviolet rays into the house, causing fading of furniture and decreasing the life of carpets and curtains.
If you're experiencing any of these problems it is possible that your double glazing need to be replaced. Making it a priority to replace it immediately can lower your energy costs and provide a more comfortable and relaxed living space.
Replacing a sealed double-glazed unit is a laborious and technical process that requires the proper equipment, careful preparation and precise measurements. It is not an DIY task and should only be carried out by a specialist in uPVC windows and doors who can guarantee the proper fitting of the replacement unit, to protect your home from the elements. Their experience and expertise will ensure that your double glazed unit is a quiet and efficient blend of warmth in winter and coolness in summer, protecting your home from the weather.