Replacement Double Glazed Units
Double-glazed units, or sealed units, as they're called, will be damaged over time. This happens because the insulating properties of the inert gases that are a part of the glass panes break down.
When a window has broken down, it is essential to replace the unit to ensure that your home is well-insulated and energy efficient. The process is fairly simple and straightforward.
Installation
If the window was installed correctly, the new unit will fit snugly and securely inside the frame. If the new glazed panel is not the same size as the old one it may be necessary to adjust the 'packers' (usually blue or red plastic slips) in the frame. Check with your installer or the instructions of the manufacturer if you're uncertain.
A high-quality replacement double-glazed sealed unit is constructed to exacting standards, and should fit your frame with ease. A small error can have a significant impact on your window's performance.
Modern double-glazed units are a great energy efficient addition to any home. They utilize argon between the panes of glass to insulate, and reduce the amount heat that can escape from your home during cold winter.
However, in some cases, these units can fail or have problems with their seals. This happens when moisture enters the air cavity and results in condensation. The presence of moisture in the cavity of your windows is not just unsightly, but also reduces the effectiveness and efficiency of the glass unit.
Condensation can be caused by a range of causes. The most effective method to determine the cause is to look for a foggy or misty appearance between your windows. This indicates that the seal between the two panes of glass has been broken and moisture is flowing into your living spaces.
The first step is to remove the glazing beads around the edges of your window. It can be a bit difficult and messy, however it's worth it because you will have access to the wedge gasket that holds your glass in position. It is necessary to remove the beads with care so that they do not break and it is often recommended to ask for assistance at this point. After the beads are removed, allow the sealed unit to fall slightly out of the frame. Then, using a helper hold it in place while you measure it accurately length, width and the thickness. This is important because it determines the dimensions of the wedge gasket you need to cut for the new double glazed sealed unit.
Checking
Double glazing units, or sealed units as they are commonly called, can fail in time. This normally occurs due to a breach in the seal, which allows moisture and condensation to enter the space between the panes. This can affect the capacity of the window to keep cold air out, warm air generated by the home's heating in, and solar energy from the sun's energy inside.
Failure of the seal can cause draughts within the home. Double glazed windows should be checked regularly for signs of failure. If you see moisture or mist forming between the glass, this is an indication that the seal is not working and a new unit should be installed.
It is important that you replace the sealed unit with the proper size. The uPVC frames that the sealed unit is placed have a tiny tolerance for movement, meaning that even a few millimetres can affect the performance of the windows. To ensure that you are ordering the right size it is best to seek advice from an expert or the manufacturer's guide.
Insert the new piece of glass into the frame with the help of a friend. It is essential that you make this move in a secure spot as the glass is fragile and may be thrown out and break. Once the sealed unit is secured in the frame, reconnect any packers on 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 examination to ensure that there aren't any gaps or misalignments that could compromise its performance.
You may need to add some sealant around the frame's perimeter in order to prevent it from moving. It is recommended to check the thickness of the glass unit. Double-glazed units come in various thicknesses. Making the wrong choice can have a negative impact on the u value of your home.
Sealing
Double glazing is a great method to increase the efficiency of your home's heating system and enhance acoustics by reducing the transfer of sound. Over time, the seals on the glass can get worn out, leading to windows that are drooping or misty. In these cases, replacement is essential. It is a good idea to consult a professional double glazing installer who can help you choose the right glass products as well as ensure precise measurements and ensure that the installation is done correctly.
If you are replacing a sealed unit, the first step is clean the frame. Make use of an old paintbrush (4 inches is ideal) to clean the frame, removing dust that has accumulated over time. After the frame has been cleaned, it's a good idea give the seals that are new a thorough clean too. It is the easiest way to remove the wedge gaskets from the friction joint by placing your fingers along the edge of the gasket and pulling it out. It is also important to make an outline of the length you require for your new seals since it will be helpful when cutting them to size.
Installation of the sealed unit is simple after the gaskets and frame have been cleaned. It's a good idea remove the beads (the UPVC frames clips that are used to hold the glasses) and measure them. This will ensure that the seal is constructed to the right size and will not leave any gaps around it.
After the beads have been reinserted, you can start with the top one and move to the lower ones. After sealing the units, you must not be touching them for a few hours as the silicone sealant has to harden and set. I typically leave it for about 6 hours prior to handling but this could depend on the silicone sealant's setting times.
Finalization
Finishing the project and sealing it is now necessary once the new double-glazed unit is been securely installed within its frame. This step is not only a physical finalization of the project but also a declaration that your home is ready to weather the elements with its new secured guardian is installed.
The first step is to clean the frame taking care to remove any glazing strips or beads that bonded the old glass. The frame is then scrubbed clean of dirt, sealant or glazing tape. This process also rejuvenates the frame made of timber or aluminium. This is also the moment to make any small repairs using wood filler and sanding, if needed. Damages that are severe should be reported to a professional to repair.
The spacer tubes will be filled with desiccants to take in any moisture that could be trapped between the two panes during production or over time. This is a typical procedure for warm edge sealed units. Thermoseal Group stocks desiccants as well as manual and automated desiccant dispensing equipment.
After the spacers have been filled with glass, the frame and glass are sealed with a high-performance silicone designed to tolerate Australia's harsh climate. This sealant creates an airtight barrier that is both flexible and durable, and can expand and contract without breaking. It is essential to choose the right thickness, as any gaps could affect thermal performance. Consult upvc window gasket replacement Repair My Windows And Doors or the manufacturer's manual for more information on the thickness to use.
The final step is to add secondary sealant, which is typically polyisobutylene (PIB) or a similar product. It's applied to edges of the frame's exterior, where it creates a secondary seal able to repel moisture and prevent air penetration which can increase energy efficiency.
The frame is then finished with an aluminum cladding. This is a coating that is able to withstand the elements, and keep your frame looking new for many years to be. It's a wise investment in the long-term durability of your home's frame, particularly in the case of period or federation homes where timber frames are susceptible to rot and degradation.