5 Tools That Everyone Working In The Replacement Double Glazing Sealed Units Industry Should Be Utilizing
Replacement Double Glazed Units
Over time, double glazed units (or sealed units as they are usually called) can break down. This typically happens when the insulating properties of the inert gas that is between the glass panes break down.
It is essential to replace a damaged window to ensure that your home is fully energy efficient and well-insulated. The process is fairly simple and easy.
Installation
If the window has been installed correctly, the new unit will be firmly seated and will fit comfortably within the frame. If the new unit is not the same thickness as the old one, you may have to modify the existing "packers" (usually red or blue slips of plastic) inside the frame to ensure it is properly placed. Ask your installer for instructions provided by the manufacturer if you're not sure.
A good replacement double glazed sealed unit will be manufactured to the highest standards and should fit in your frame with the least amount of fuss. A minor mistake can have a huge impact on your window's performance.
Modern double glazed units are a fantastic energy efficient addition to any home. They utilize argon between the panes glass to provide insulation and cut down on the amount of heat that escapes from your home during cold winter.
However, there are times when these units fail or have problems with their seals. replacing seal on windows happens when moisture enters the air cavity and results in condensation. The presence of moisture in your window is not just unsightly but also affects the effectiveness of the glazed unit.
Look for a fogginess or misty appearance in between the window panes. This indicates that the seal between two panes has been broken and water is flowing in to your living space.
The first step to take is to take the glazing beads off around the edges of your window. It's tricky and messy, but it's worth it as 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 a good idea to ask for help at this point. After the beads have been removed, allow the sealed unit to fall back slightly from the frame and with an assistant, hold it in place while you measure it accurately height, width and the thickness. This information is vital as it will help you determine the size wedge gasket you need to cut for your newly double glazed sealed units.
Checking
Double glazing units, or sealed units as they are usually called, can break down over time. This is usually due a leak in the seal that lets condensation and moisture into the space between the panes. This will affect how well the window is able to keep out cold air, heat generated by the heating system in the home, and solar heat inside the window.
The failure of seals can result in draughts being felt within the home. Double-glazed windows must be examined often for indications of failure. The presence of mist or moisture between the glass is a clear sign that the seal has failed and a replacement unit should be put in place.
It is crucial to replace the sealed unit with the proper size. The uPVC frames in which the sealed unit is positioned have a very limited tolerance for movement, meaning that even a few millimetres can alter the performance of windows. To be certain that you're getting the right size, it's best to seek advice from a professional or the manufacturer's guide.
With a helper holding the new piece, gently place it in the frame. It is crucial to make this move in a secure spot as the glass is fragile and can fall out and break. Once the sealed unit has been fixed to the frame, attach any packers that are on the bottom of the frame, and then replace the glazing beads into their original position. Once you've completed this, give the window a thorough visual inspection to make sure there aren't any gaps and that it is not misaligned.
You may need to add a small amount of sealant around the perimeter of the frame to stop it from moving. It is also a good idea to re-check the thickness the glass unit. This is important as double-glazed units come in different thicknesses, and if you choose the wrong one, it could affect the u-value of your home's insulation.
Sealing
Double glazing is a fantastic method to increase your home's thermal efficiency as well as provide improved acoustics by decreasing the transfer of sound. Over time, the seals on the glass can be worn out, resulting in windows that are drooping or misty. In these instances, replacement is essential. It is a good idea to consult a double-glazing professional who can help you select the best glass products, take accurate measurements and ensure proper installation.
The first thing that needs to be done when replacing the sealed unit is to clean the frame. Use an old paintbrush (4 inches is the ideal size) to scrub the frame, taking off dust that has built up over time. Once the frame is clean it's a good idea give the new seals a thorough clean too. It is easiest to remove the gaskets that are wedge-shaped from the friction joint by placing your fingers along the edge of the gasket and pulling it away. You should also take a note of the length you need for your new seals since it will be useful when cutting them to size.
Once the gaskets are clean and the frame is cleaned it's time for the sealed unit. To ensure the best results when doing this, it's best to prise out the beads (the UPVC frame clips that are used to hold the glass) and then measure these. This will ensure that the seal is made to the correct size, and that there aren't any gaps in it.
After the beads have been placed back in, you are able to begin with the top one and work your way down to the other. After sealing the units, do not contact them for several hours because the silicone sealant has to set and harden. I typically leave it for about 6 hours prior handling but this could depend on the silicone sealant's setting time.
Finishing
Sealing and finishing the project is now required once the double-glazed unit has been securely installed within its frame. This isn't just a physical finish to the project, but also a declaration that your home will be well-equipped to stand the test of time after the new secured guardian is installed.
The first step is to clean the frame carefully removing any glazing strips or beads that held the old glass. Then, the frame is free of dirt and sealants that have been used for years, as well as glazing tape, a process that also rejuvenates the timber or aluminium of the frame of the window. It's also a good opportunity to look over any damage and make small repairs using wood filler or sanding when needed. If you have a major issue, you should seek out a professional.
The spacer tubes will then be filled with desiccants to absorb any moisture that may have accumulated between the two panes during manufacturing or over time. This is a common practice for a warm edge seal. Thermoseal Group stocks desiccants as well as manual and automatic desiccant dispensing devices.
After the spacers have been filled with the spacers, the glass and frame are sealed with a high-performance silicone, specifically designed to withstand Australia's tough climate. This sealant creates an airtight barrier that is both durable and flexible that can expand and contract without breaking. It is crucial to choose the correct thickness as any gaps can affect thermal performance. Talk to a professional or consult 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 similar products. This is applied along the edges of frames to form an additional seal. It is able to repel moisture and block air infiltration, improving the efficiency of energy.
The frame is then finished with an aluminum cladding. This protective coating can withstand the weather and keep your frame looking fresh for a long time. This is a wise investment to ensure the durability and beauty of your home's frames, particularly if you have federation or period homes with timber frames that are susceptible to rot.