Replacing Double Glazed Units
Replacing double-glazed units is a home improvement task that can greatly reduce heat loss, increase the insulation of noise and reduce heating bills. Modern coatings and argon/krypton filled units make them extremely energy efficient.
The new unit, made to exact measurements, is waiting for its place and calls for attention and precision. This is the moment that stops time and puts everything in perspective.
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It is essential to take out the old unit in order to ensure that your new double-glazed window is made to exact measurements. Carefully clean the frame of any dirt, dust or old sealant and repair any damage that may be present. Repairs of minor amounts can be made by using wood filler or sanding however major damage could require professional repair.
Once the glass has been removed, it is important to measure its width, height and thickness. This can be done by removing the glass beads that hold the unit. This is a delicate procedure that requires patience and prudence. It is recommended that you take your time and always make sure to wear safety gear to safeguard yourself from unexpected shards glass and accidental slips.
Begin by taking off the lower part of the glazing strip with a sharp chisel, or a wide-bladed, sharp screwdriver. It is recommended to have someone else to hold the window unit as you remove all the beads. This is because the unit can easily fall out of the frame and hit.
Once all the beads have been removed, it is essential to carefully measure the width, height and thickness of the unit you have. You can use the measurements to create a replacement unit. In addition, it will also give you a direction to ensure that the new unit will fit into the frame. This is important because a misfit will not only result in the need to dismantle and put back together the entire window, but it will also impact the efficiency and performance of the window. This is particularly important in Australia where homes are often exposed to extreme weather conditions.
Preparing the Frame
If you're replacing a fixed window, or a sliding door with an opening or fixed sash, ensure that your new window is of the correct size. UPVC frames offer little room for movement, and a sealed double glazing unit that is even just a few millimeters larger will simply not fit. To ensure accurate measurements make sure you measure with care and consult an expert.
Remove the glass from the frame when you're certain that the replacement is of the correct size and has been properly fitted. Be sure to work in a well-lit space and wear safety equipment such as gloves to avoid injury from glass shards. Use a putty knife cut the glazing beads or strips that hold the glass within the frame, starting from around the perimeter of the pane. You should avoid slipping the glass or straining frame.
Check that the frame can be opened and closed smoothly after the new double-glazing unit sealed is installed. It should be a tight fit, but you are able to adjust this if necessary by adding or removing packing. If the frame is designed for sliding glass doors it is possible to add packers on the top of the hinge as well as the opposite corner to prevent the sash catching when it opens.
Then clean the frame. Remove any old glazing tape or sealant If needed. Check for any damage and make small repairs with wood filler or sanding if necessary. The frame will be refreshed by a final cleaning and inspection, allowing it to withstand Australia's harsh weather for many years.
Lifting the New Unit
Over time, double-glazed units can experience problems such as condensation between the panes or misting. When this happens the effectiveness of your window can be diminished by letting cold air in and letting warm air from your heating system out and causing the cost of energy and loss of comfort.
This type of failure in seals is usually caused by age, general wear and tears or harsh chemical cleaners that deteriorate the sealing material. Sometimes, the cause is simply down to shrinking and expanding of the glass in the changing seasons and the temperature fluctuations within the home.
After the frame has been cleaned and prepared, you can start lifting the frame into the right place. This is a very exciting step since you've just increased the efficiency of your home's heating during winter and cooling in summer while also reducing your energy bill.
It is essential to ensure the new unit is properly fitted into the frame prior to securing it to the frame. A little care during this process can help avoid any damage to the frame, as well as the glass.
If you are using sealing tape or glazing tape on your windows, this is the perfect time to apply a small bead around the perimeter of the glass. This will create a strong barrier that blocks air and moisture from getting into the window. Make sure to tighten the sealant carefully making sure it's secure, but not too tight to strain the frame or glass. Finally, give yourself a pat on the back for a job well done, and enjoy your new double-glazed window!
Secure the Unit
With the new unit seated perfectly in the frame, and a fresh bead of sealant covering its edges, this is the moment that signifies the end of your work. The unit is now secured to withstand Australia's varied weather and ensure warmth in the winter months and coolness in summer. This is the moment to confirm your careful measuring and removal, a proof of a unit crafted according to precise measurements.
It is essential to find the perfect balance between securing the unit and not stressing the glass. If it's too loose, the unit may lose its airtight seal. If it's too tight, it could damage the frame or warp the material. Each screw has to find its original position, turning just enough to ensure that the unit is held securely without putting too much pressure on it.
This is the final stage in a project that can increase the energy efficiency of a house, comfort, and appearance. With the brand new double-glazed unit snugly seated in the frame and securing a fresh bead of sealant around its perimeter it is the moment that signifies the end of your work.
The insulating cavity between panes of glass is filled either argon gas or desiccant. Argon is, in contrast to air is a bit less thermal conductivity which reduces heat transfer. Desiccants also adsorb moisture from the air, which prevents mould and condensation in the frame. The spacer bar is constructed of aluminum and is a vital part of the insulation system. The aluminium not only prevents heat transfer but also keeps the edges warm of the insulated window to prevent condensation.
Verifying Your Work
It is crucial to allow the silicone sealant to set once you have put in the new unit. It will take at minimum four hours for the silicone sealant to attain its maximum strength and create an impenetrable barrier. While you wait, examine your work to determine whether there are any gaps or other issues that could impact the effectiveness or appearance.
This is also a good time to check the frame and seals for indications of damage that require attention, and also to determine whether replacement of the entire window is required. A faulty seal will significantly impact your home's energy efficiency, causing drafts or cold spots. It can also allow ultraviolet rays to penetrate the house, leading to fading of furniture and decreasing the lifespan of carpets and curtains.
If you're experiencing any of these problems it's an indication that your double glazing is in need of replacing. It can help you save money on your energy bills, and will create a more relaxing and comfortable living space.
It is a complex and labor-intensive job that requires the correct equipment, precise measurement and careful preparation. It is not an easy DIY task and should only be handled by a specialist in uPVC windows and doors who can ensure that the right fit is made for the replacement unit to protect your home from the elements. Their expertise and knowledge 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.