Replacement Double Glazed Units
Double-glazed units, or sealed units as they're also called, may get worn out over time. This happens because the insulating qualities of the gasses that insulate the glass panes break down.
It's important to replace a damaged window to ensure that your home is energy efficient and insulated. The task is simple and straightforward.
Installation
If the window is properly installed, the new window will fit snugly and fit snugly inside the frame. If the new glazed panel is not the same size as your old one it may be necessary to adjust the 'packers' (usually blue or red plastic slips) in the frame. If you are unsure how to do this then consult your installer or the manufacturer's instructions for guidance.
A high-quality replacement double-glazed sealed window is manufactured to the highest standards and should fit your frame with ease. However, a small error can have a major impact on the performance of your window, and must be inspected carefully.
Modern double-glazed units are a fantastic energy efficient addition to any home. They utilize the argon gas between the panes to insulate and thus reduce the amount of heat that will escape your home in cold weather.
However, in some cases, these units may fail or have problems with their seals. This occurs when moisture enters the air cavity and causes condensation. The presence of moisture in your window is not only unsightly however it also decreases the effectiveness of the glazed unit.
Condensation can be caused by a range of factors and the best method to test for it is to look for a foggy or hazy appearance between the window panes. This indicates that the seal between the two glass panes is broken and water is entering your living spaces.
The first step to take is to take the glazing beads off around the edges of your window. It can be difficult and messy, but it is worth the effort because you will be able to access the wedge gasket that holds the glass in place. You'll need to take off the beads with care so that they don't break, and it's usually a good idea to seek assistance at this stage. Once the beads have been removed then allow the sealed unit a little to fall out of the frame. With the help of a person, hold it in place while you accurately determine its size, height and width. This information is essential because it determines the size of the wedge gasket that you need to cut for the new double glazed sealed unit.
Checking
Double glazing units, or sealed units, as they are often called, can break down over time. This is usually due to a break in the seal which allows condensation and moisture to get into the space between the panes. This can affect the capacity of the window to keep cold air out, and warm produced by the heating system in and solar gain from the sun inside.
Seal failure can also cause draughts to be felt in your home. It is important to regularly check your double glazed windows for indications of failure. If you see moisture or mist forming between the glass, this is a sign that the seal is not working and a new unit should be installed.
If you have to replace a sealed unit, it is crucial that the new one is of the right size to fit. The uPVC frames in which the sealed unit is set in have little tolerance for movement so even a few millimetres too big can affect the performance of the window. To ensure that you're ordering the right size it is best to consult a professional or the manufacturer's guide.
With a helper holding the new unit gently slide it into place in the frame. It is essential that you do this in a secure place since the glass is fragile and could fall out and break. After the sealed unit is secured in the frame re-attach any packers on the bottom of the frame and then put the glass beads back in their original position. After you have completed this, give the whole window a visual examination to ensure that there are no gaps or misalignments that could affect its performance.
You may also need to apply a small amount of sealant to the perimeter edge of the frame to prevent it from moving in future. It is also a good idea to re-check the thickness of the glass unit. Double-glazed units come in various thicknesses. Making the wrong choice could have a negative effect on the value of your home.
Sealing
Double glazing can improve the thermal efficiency of your home and improve audio. However, over time, the glass's seals can be damaged, resulting in misty windows and a decrease in performance. In these instances, replacement is essential. It is recommended to collaborate with an experienced double glazing contractor who can help choose the appropriate glass to ensure accurate measurements and ensure that the installation is done correctly.
When replacing a sealed unit, the first thing to do is clean the frame. You can make use of an old paintbrush (4 inch is the best) to sweep the frame clean by removing dust and cobwebs that will have built up within the frame over time. After the frame has been cleaned, it's a good idea give the new seals a clean too. The easiest way to do this is to remove the Wedge gaskets by placing your fingers on the edge and then pulling it out at the point that it overlaps with the friction joint. Take note of the time frame you'll need to use your new seals. This will assist when cutting them.
After the gaskets have been cleaned and the frame is cleaned it's time to put in the sealed unit. It's a good idea to take off the beads (the UPVC frames clips that serve to hold the glasses) and then measure the size of them. This will ensure that the seal is constructed to the right size and ensure there aren't any gaps in it.
Once the beads are back in place you can insert the top bead, and then work your way round to the other three. After sealing the units, you must not touch them for a few hours as the silicone sealant has to harden and set. I typically leave it for about 6 hours prior handling but this will vary based on your silicone sealant's setting times.
Finishing
The sealing and finalization of the project is now required after the double-glazed unit has been installed securely within its frame. This step is more than just a physical closure to the project; it's an affirmation that your home is now ready to withstand the elements with its brand new secure guardian securely in its place.
The first step is to clean the frame taking care to remove any glazing beads or strips that secured the old glass. Then, the frame is cleaned of dust and old sealant as well as glazing tape, a procedure that also revitalizes the wood or aluminium of the window's frame. It is also a good time to assess any damage and make small repairs, by using wood filler or sanding as necessary. Major damage should be referred to an expert for repair.
The spacer tubes will be filled with desiccants in order to absorb any moisture that may have accumulated between the two panes in the process of manufacturing or over time. This is a standard procedure for units with warm edges. Thermoseal Group stocks desiccants as well as manual and automatic desiccant dispensing machines.
After the spacers have been filled and sealed, the glass is then sealed with a high performance silicone that's designed to withstand Australia's harsh environment. sealed window repair repairmywindowsanddoors creates a tight barrier that's strong and flexible, able to expand and contract without becoming fragile or breaking. It is essential to choose the right thickness, as any gaps could impact thermal performance. Ask a professional for advice or refer to the manual of the manufacturer if you are unsure about the thickness you should use.
The final step is to add secondary sealant, which is typically polyisobutylene (PIB) or an equivalent product. It is applied to the outside edges of frames to form a secondary seal. It is able to repel moisture and stop air infiltration, thus increasing energy efficiency.
The frame is coated with aluminum cladding. It's a protective coating that can withstand the elements, and keep your frame looking new for many years to come. It's a smart investment for the long-term integrity of your home's frame particularly in the case of historic homes or federation homes, where timber frames are prone to decay and rot.