Replacement Double Glazed Units
Double glazed units, or sealed units as they're also called, will be damaged over time. This usually happens when the insulating properties of the inert gas between the glass panes breaks down.
If a window has been damaged down, it is essential to replace it to ensure your home is fully insulated and energy efficient. Fortunately the task is relatively easy and straightforward to do at home.
Installation
If the window was installed correctly, the new unit will fit snugly and securely inside the frame. If the new unit isn't of the same thickness as the older one, you may have to modify the existing "packers" (usually red or blue slips of plastic) within the frame to ensure it sits properly. Check with your installer or the instructions of the manufacturer if you're not sure.
A good quality replacement double glazed seal will be manufactured to the highest standards and will fit into your frame with the least amount of fuss. A small error can have a significant impact on the performance of your window.
Modern double-glazed units can be a great addition to any home. They are energy efficient and save you money. They apply argon between the panes glass to keep them warm and decrease the amount of heat that escapes from your home during cold winter.
Sometimes, these units may have issues with their seals. This occurs when moisture enters the air cavity and causes condensation. The condensation in your window is not just ugly, but it also reduces the effectiveness of the glazed unit.
Condensation can be caused by a range of causes. The most effective method to test for it is to look for a cloudy or hazy appearance between your window panes. This could be a sign that the seal between the two panes of glass is broken and moisture is leaking into your living spaces.
The first thing to do is remove the glazing beads around the window edges. It can be tricky and messy, but it's worth it as you will be able to access the wedge gasket which holds the glass in place. You'll need to take off the beads with care to ensure that they do not break, and it's usually an excellent idea to seek assistance at this point. After the beads have been removed, allow the sealed unit to fall back slightly from the frame. Then, using an assistant, hold it in position while you accurately measure the width, height and also the thickness. This is important because it will determine the size of the wedge gasket that you need to cut for the double glazed unit.
Checking
Double glazing units or sealed units as they are commonly called, may break down over time. It is usually due to leaks in the seal, which lets condensation and moisture into the space between the panes. This can affect the way the window is able to block out cold air, heat produced by the heating system in the home, and solar heat inside.
Failure of the seal can cause draughts to be felt in the home. It is important to regularly check your double glazed windows for signs of failure. Moisture or misting in between the glass is an indicator that the seal has failed and a replacement should be put in place.
It is important that you replace the sealed unit with the correct size. The uPVC frames that the sealed unit is positioned have a very limited tolerance for movement, so even a few millimetres can affect the performance of the windows. Consult a professional or the guide provided by the manufacturer to ensure that you get the correct size.
With a helper holding the new piece, gently place it in the frame. This should be done in a safe place as the glass can break if it falls out. Once the sealed unit is secured in the frame re-attach any packers that are at the bottom of the frame, and then put the glass beads back into their original position. Once you have done this give the entire window a thorough inspection to ensure there aren't any gaps or areas of misalignment that could compromise its performance.
You may have to add a small amount of sealant around the edges of the frame in order to prevent it from moving. Re-checking the thickness of the unit is recommended. Double-glazed units come in different thicknesses. Making the wrong choice can have a negative impact on the u value of your home.
Sealing
Double glazing can boost the thermal efficiency of your home and improve sound insulation. However, with time, the seals in the glass can get worn out, leading to misty windows and a decrease in performance. In these cases replacement is needed. It is a good idea to employ a double glazing expert who can help you select the best glass products, take precise measurements, and ensure proper installation.
The first thing that needs to be done when replacing the sealed unit is to clean the frame. You can make use of an old paintbrush (4 inch is ideal) to sweep the frame clean to remove dust and cobwebs which have built up in the frame over time. After the frame has been cleaned, it's a good idea give the new seals a clean too. The easiest method for doing this is to lever out the Wedge gaskets by putting your fingers on the edge and then pulling it out until you reach the point that it overlaps with the friction joint. You should also take a note of the length that you require for your new seals as it will help when cutting them to size.
Installing the sealed unit is simple once the frame and gaskets have been cleaned. To get the best results when doing this, it's recommended to remove the beads (the UPVC frame clips that support the glass) and then take measurements of these. This will ensure that the seal is constructed to the right size and will not leave gaps around it.
Once the beads are back in place you can insert the top bead, and then proceed to the next three. After sealing the units, you must not touch them for a few hours as the silicone sealant needs to set and harden. I usually leave it for about 6 hours prior handling but this could vary based on your silicone sealant's setting time.
Finishing
Finishing the project and sealing it is now required once the new double-glazed unit is been securely installed within its frame. This isn't just an aesthetic finishing touch to the project but also a statement that your home will be ready to weather the elements with its new safe guardian is installed.
The first step involves cleaning the frame and removing any glazing beads strips or other materials used to secure the old glass. The frame is then cleaned of any dirt, old sealant and glazing tape. This process also rejuvenates the timber frame or aluminium frame. This is also the time to make any minor repairs with wood filler and sanding, in the event that it is necessary. The most serious damage should be taken to an expert to repair.
The spacer tubes will be filled with desiccants in order to absorb any moisture that might have been trapped between the two panes in the process of manufacturing or over time. This is a standard practice for a warm edge sealed unit. repairmywindowsanddoors desiccants as well as manual and automatic desiccant dispensing devices.
After the spacers are filled and sealed, the glass is then sealed with a highly-performing silicone that is designed to withstand Australia's harsh environment. This sealant creates an airtight seal that is both flexible and durable, and can expand and contract without breaking. It's important to use the correct thickness, as any gaps could affect thermal performance. If you're unsure of the right thickness to use, consult with an expert or a manufacturer's guide.
The final step is adding secondary sealant. This is usually polyisobutylene, or a similar substance. It is applied to the edges of frames to form a secondary seal. It is able to repel moisture and prevent air infiltration, thereby increasing the efficiency of energy.
The frame is then finished with an aluminum cladding. It's a protective coating that is resistant to the elements, and keep your frame looking like new for many years to be. This is a smart investment to ensure the longevity and aesthetics of your frames, particularly if you have federation or period style homes with timber frames that are prone to get rotted.