Replacement Double Glazed Units
Double-glazed units, or sealed units as they're also called, may be damaged over time. This usually happens because the insulating properties in the inert gas that is between the glass panes break down.
If a window has fallen down, it is essential to replace the unit to ensure your home is well-insulated and energy efficient. The process is fairly easy and straightforward.
Installation
If the window was fitted correctly, the new unit should be able to fit comfortably and securely inside the frame. If the new window is not the same size as the old one you may need to adjust the 'packers (usually red or bluish plastic slips) in the frame. If you are unsure what to do, consult your installer or the instructions of the manufacturer for advice.
upvc door seal replacement glazed seal will be made to exacting standards and will fit into your frame with the least amount of fuss. A tiny mistake could have a major impact on your window's performance.
Modern double-glazed units are a fantastic addition to any home. They are energy efficient and save you money. They use a layer of argon in between the panes glass to keep them warm, and reduce the amount heat that escapes your home during cold weather.
However, sometimes these units fail or have problems with their seals. This usually occurs when moisture enters the air space of the glass, causing condensation between the panes. The condensation in your window is not just ugly 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 cloudy or misty look between the window panes. This indicates that the seal between the two glass panes has broken down and moisture is flowing into your living spaces.
The first step is to take the glazing beads off around the edges of your window. It can be difficult and messy, however it is worth it because you will be able to access the gasket for wedges that holds your glass in position. It is essential to take care when removing the beads so that they don't fall off. It is advisable to ask for help. be helpful at this stage. Once the beads are removed and the sealed unit is free of them, allow it to slide a bit out of the frame. With a helper to hold it in place while you measure its width, height and thickness. This information is essential as it will help you determine the size wedge gasket to cut for your brand new double-glazed sealed units.
Checking
Double glazing units, or sealed units as they are often referred to they can break down over time. This is usually due to a leak in the seal that allows condensation and moisture to enter the space between the panes. This affects the ability of the window to keep cold air out, warmth generated by the home's heating in and solar gain from the sun inside.
Failing seals can also cause draughts inside the home. It is important to check your double-glazed windows for signs of failure. The presence of mist or moisture between the glass is an sign that the seal has failed and a replacement is required.
It is important that you replace the sealed unit with the proper size. The uPVC frames in which the sealed unit is installed have a very small tolerance for movement, so even a few millimetres could affect the performance of the windows. Talk to a professional or consult the guide that is provided by the manufacturer to ensure you get the correct size.
With the help of a friend 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. After the sealed unit is securely in the frame re-attach any packers on the bottom of the frame, and then put the glass beads back in their original position. Once you've completed this, give the window an inspection thoroughly to ensure that there are no gaps and that it isn't misaligned.
It is also possible to add a bead of sealant to the outer edge of the frame to prevent it from moving in the future. It is recommended to re-check the thickness the glass unit. Double glazed units come in different thicknesses. Using the wrong one could have a negative effect on the value of your home.
Sealing
Double glazing is a great method to increase your home's thermal efficiency as well as improve sound quality by reducing the transfer of sound. Over time, the seals on the glass may be worn out, resulting in windows that are drooping or misty. In these instances, replacement is necessary. It is recommended to consult an experienced double glazing contractor who can help you choose the best glass products to ensure accurate measurements and ensure proper installations.
The first thing to be done when replacing an item that is sealed is to clean the frame. You can make use of an old paintbrush (4 inches is the ideal size) to clean the frame, removing dust and cobwebs that will accumulate in the frame over time. Once the frame is clean it's a good idea give the new seals a clean too. The easiest way to do 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. It is also important to make notes of the length you need for your new seals since it will be helpful when cutting them to size.
Once the gaskets are clean and the frame is cleaned it's time to put in the sealed unit. To get the best results when doing this, it's recommended to prise out the beads (the UPVC frame clips that support the glass) and then measure them. This will ensure that the seal is made to the correct size and won't leave any gaps around it.
When the beads are back in place, you can put in the top bead, and then proceed to the other three. Be careful not to touch your sealed units for a long time following the sealing process as the silicone needs time to set and harden before you are able to handle it again. I typically leave it for about 6 hours before handling, but this can depend on the silicone sealant's setting times.
Finishing
The sealing and finalization of the project is now necessary once the double-glazed unit has been securely installed within its frame. This is more than a physical conclusion to the work; it's an assurance that your home is now ready to withstand the elements with a new, secure guardian safely in place.
The first step is to clean the frame carefully removing any glazing beads or strips that secured the old glass. The frame is then cleaned of any dirt, old sealant, and glazing tape. This process also rejuvenates either the timber frame or aluminium frame. This is also the moment to make any small repairs by using wood filler or sanding, if necessary. For major damage it is recommended to seek out a professional.
The spacer tubes will then be filled with desiccants to absorb any moisture that may have been trapped between the two panes during manufacturing or over time. This is a common practice for warm edge sealed unit. Thermoseal Group stocks a range of desiccants and manual or automated dispensers of desiccant.
After the spacers are filled and sealed, the glass is then sealed with a highly-performing silicone that's designed to withstand the harsh conditions of Australia's climate. This sealant forms an airtight barrier that is both durable and flexible, and can expand and contract without breaking. It is essential to choose the correct thickness as any gaps can affect thermal performance. Consult a professional or the manual of the manufacturer if you are unsure about the thickness you should use.
The final step is to apply a secondary sealant, typically polyisobutylene (PIB) or a similar product. This is applied along the outside edges of frames to form a secondary seal. It will ward off moisture and prevent air infiltration, improving the efficiency of energy.
The frame is then adorned with an aluminum cladding. This is a protective coating that can withstand the elements, keeping your frame looking new for a long time to be. It's a smart investment for the long-term integrity of your home's frame, especially in the case of historic homes or federation homes, where timber frames are prone to rot and degradation.