Replacement Double Glazed Units
Over time, double-glazed units (or sealed units as they are often called) may break down. This happens when the insulating qualities of the inert gases between the glass panes break down.
When a window has broken down, it's crucial to replace it to ensure that your home is well-insulated and energy efficient. Luckily, link home is simple and easy to accomplish at home.
Installation
If the window is installed correctly the new unit will fit firmly in place and sit comfortably inside the frame. If the new glazed unit is not the same thickness as the older one then you may need to alter the 'packers' (usually blue or red slips of plastic) in the frame to ensure it is properly positioned. Consult your installer or the instructions of the manufacturer if you're uncertain.
A high-quality replacement double glazed seal will be manufactured to the highest standards and should fit in your frame with a minimum of hassle. A tiny mistake can have a significant impact on your window's performance.
Modern double-glazed units can be a great addition to any home. They are energy efficient and can save you money. They use a layer argon between the panes glass to insulate, and reduce the amount heat that escapes your home during cold weather.
Sometimes, these units develop problems with their seals. This happens when moisture enters the air cavity and causes condensation. 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 variety of factors and the best way to check is to look for a hazy or hazy appearance between the windows. This indicates that the seal between two panes is ruptured and moisture is pouring into your living space.
The first step to take is to take the glazing beads off around the edges of your window. This can be complicated and messy, but it is worth the effort since it allows you to get access to the wedge gasket that keeps your glass in place. It is necessary to remove the beads with care to ensure that they don't break and it is often recommended to ask for help at this point. Once the beads are removed then allow the sealed unit to loosen a bit of the frame. With a helper holding it in place while you accurately take measurements of its width, height and thickness. This information is essential as it will help you determine the size wedge gasket you need to cut for your brand new double glazed sealed units.
Checking
Double glazing units or sealed units as they are often called they can break down in time. It is usually due to an opening in the seal, which allows condensation and moisture to enter the space between the panes. This will affect 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.
A faulty seal can also result in draughts being felt within the home. It is crucial to check regularly your double glazed windows for signs of failure. The presence of mist or moisture between the glass is an indicator that the seal has failed and a replacement unit should be installed.
It is essential to replace the sealed unit with the proper size. The uPVC frames which the sealed unit is placed in have a very limited tolerance for movement, so even a few millimetres too big can affect the performance of the window. To be certain that you're getting the right size, it's recommended to speak with a professional or the manufacturer's manual.
Place the new unit into the frame with the assistance of a companion. This should be done in a secure location as the glass could break if it falls. After the sealed unit has been secured in the frame, reattach any packers on the bottom of frame and then reinstall the glazing beads back into their original position. After you have completed this, give the whole window a visual examination to make sure there aren't any gaps or misalignments that could affect its performance.
You may need to add some sealant around the perimeter of the frame to prevent it from moving. Re-checking the thickness of the unit is also an excellent thing to do. Double-glazed units come in different thicknesses. If you choose the wrong one, it could have a negative effect on the u value of your home.
Sealing
Double glazing is a fantastic option to boost your home's thermal efficiency and enhance acoustics by decreasing the transfer of sound. Over time the seals on the glass may wear out resulting in misted or drooping windows. In these cases replacement is required. It is recommended to consult an experienced double glazing installer who can help you choose the right glass products to ensure accurate measurements, and ensure proper installation.
If you are replacing a sealed unit the first thing to do is clean the frame. You can use an old paint brush (4 inch is ideal) to sweep the frame out to remove dust and cobwebs that build up in the frame over time. It's a great idea clean the seals that have been installed after the frame has been cleaned. The most efficient method to do this is to remove the Wedge gaskets by placing your fingers on the edge, and then pulling it out until you reach the point that it overlaps with the friction joint. Take note of how long you need the new seals. This will help when cutting them.
The installation of the sealed unit is straightforward after the gaskets and frame have been cleaned. To get the best results from this, it's recommended to prise out the beads (the UPVC frame clips that hold the glass) and then take measurements of these. This will ensure that the seal is constructed to the right size, and that there aren't any gaps in it.
After the beads have been reinserted, you can start with the top one and work your way to the lower ones. After sealing the units, do not touch them for a few hours as the silicone sealant has to set and harden. I usually leave it for about 6 hours prior handling but this could depend on the silicone sealant's setting times.
Finishing
When the new double-glazed unit is secure within its frame and is sealed, it's time to seal and complete. This isn't just a physical finishing touch to the project it also signifies that your home is well-equipped to stand the test of time after the new secured guardian is in place.
The first step involves cleaning the frame and removing any glazing beads, strips or other materials that were used to secure 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 with wood filler and sanding, if necessary. For major damage it is recommended to consult an expert.
The spacer tubes will be filled with desiccants in order to absorb any moisture that might have been trapped between the two panes during manufacturing or over time. This is a standard practice for a warm edge seal. Thermoseal Group stocks desiccants as well as manual and automated desiccant dispensing devices.
After the spacers are filled, the glass is sealed with a high-performance silicone designed to withstand Australia's harsh climate. This sealant creates an airtight barrier that's both flexible and durable and can expand and contract without breaking. It is important to use the right thickness, as any gaps can affect the thermal performance. Ask a professional for advice or refer to the manufacturer's manual if you are unsure about the thickness you should use.
The final step is to add secondary sealant. It is typically polyisobutylene or another similar material. This is applied along the edges of frames to form a secondary seal. It can repel moisture and stop air infiltration, improving the efficiency of the energy.
The frame is then completed with aluminum cladding. This protective coating can withstand the weather and keep your frame looking brand new for many years. This is a smart investment to ensure the longevity and aesthetics of your frames, particularly if have period or federation style homes with timber frames that are prone to get rotted.