Replacement Double Glazed Units
Double glazed units, or sealed units, as they're called, may wear out over time. This happens because the insulating properties of gasses that insulate the glass panes are broken down.
If a window has been damaged down, it is essential to replace it to ensure your home is properly insulated and energy efficient. The task is relatively simple and easy.
Installation
If the window is installed correctly the new unit will be firmly seated and will fit comfortably within the frame. If the new window isn't the same thickness as the old one it may be necessary to adjust the 'packers' (usually blue or red plastic slips) in the frame. Ask your installer for instructions from the manufacturer if you're uncertain.
A high-quality replacement double-glazed sealed unit is made to exacting standards, and should fit into your frame with minimal fuss. A minor mistake could have a major impact on the performance of your window.
Modern double-glazed units are a fantastic addition to any home. They are energy efficient and save you money. They are constructed with a layer of argon gas between the panes in order to insulate and reduce the amount of heat that will escape your property during cold weather.
Sometimes, these units have issues with their seals. This occurs when moisture enters the air cavity and creates condensation. The condensation in your window is not just ugly but also affects the effectiveness of the glazed unit.
You can spot a cloudy or a misty appearance between the window panes. This indicates that the seal between two panes is ruptured and moisture is pouring into your living space.
The first thing to do is remove the glass beads that surround the window edges. It can be difficult and messy, however it's worth it because you will be able to access the gasket for wedges 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 often a good idea to seek help at this point. Once the beads are removed allow the sealed unit to fall back slightly from the frame. With an assistant, hold it in position while you accurately measure the height, width and the thickness. This is important as it will determine the dimensions of the wedge gasket that you will need to cut for the double glazed unit.
Checking
Double glazing units or sealed units as they are commonly called, can break down over time. This is usually due 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, and warm produced by the heating system in, and solar energy from the sun's rays inside.
Failing seals can also cause draughts in the home. Double glazed windows should be examined frequently for indications of failure. The presence of mist or moisture between the glass is a strong sign that the seal has failed and a replacement unit is required.
It is important that you replace the sealed unit with the proper size. The uPVC frames in which the sealed unit is set in have a very limited tolerance for movement, so even tiny millimetres of excess could affect the performance of the window. To ensure that you're getting the right size, it's recommended to speak with an expert or the manufacturer's guide.
With a helper holding the new unit gently slide it into place in the frame. It is vital to do this in a secure spot as the glass is fragile and can be thrown out and break. Once the sealed unit is secured in the frame, reconnect any packers at the bottom of the frame and then put the glass beads in their original positions. After you've completed this, give the window an inspection thoroughly to ensure there are no gaps, and that it is not misaligned.
It may be necessary to apply a bit of sealant to the outer edge of the frame in order to prevent it from moving in the future. It is recommended to re-check the thickness the glass unit. Double-glazed units are available in different thicknesses. Using the wrong one could have a negative effect on the u value of your home.
Sealing
Double glazing is an excellent method to increase your home's thermal efficiency and provide improved sound quality by cutting down on the transfer of sound. However, with time, the glass's seals can get worn out, leading to misty windows and a reduction in performance. In these situations replacement is required. double glazed window seal repair is a good idea for you to work with an experienced double glazing contractor who can assist you in selecting the best glass products, ensure accurate measurements and ensure that the installation is done correctly.
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 ideal) to clean the frame, removing dust that has accumulated over time. It's a great idea to clean the new seals after the frame has been cleaned. It is the easiest way 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 notes of the length you need for your new seals as it will help in cutting them to the required size.
Installing the sealed unit is simple once the frame and gaskets have been cleaned. It's a good idea to remove the beads (the UPVC frames clips that serve to hold the glasses) and measure them. This will ensure that the seal is constructed to the correct dimensions and ensure there aren't any gaps around it.
After the beads have been put back in, you can begin with the top one and work your way to the lower ones. After sealing the units, you should not be touching them for a few hours as the silicone sealant must harden and set. I usually leave it for about 6 hours prior to handling, but this can depend on the silicone sealant's set times.
Finalization
Sealing and finishing the project is now required once the new double-glazed unit has been snugly installed within its frame. This is more than a physical conclusion to the project; it's an affirmation that your home is prepared to face the elements with its brand new secure guardian securely in the right place.
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, old sealant, and glazing tape. This process also renews the aluminium or timber frame. It is also a good time to look over any damages and make small repairs, by using wood filler or sanding if necessary. If you have a major issue it is recommended to consult a professional.
The spacer tubes will be filled with desiccants in order to absorb any moisture that might be trapped between the two panes during production or over time. This is the standard procedure for a warm edge seal. Thermoseal Group stocks a range of desiccants as well as manual or automatic desiccant dispensers.
After the spacers have been filled with glass, it is sealed with a high-performance silicone designed to withstand Australia's harsh climate. This sealant forms an airtight barrier that's both flexible and durable, and can expand and contract without breaking. It's important to use the correct thickness, as any gaps can impact the thermal performance. Talk to a professional or consult the manufacturer's manual in case you're not sure about the thickness you should use.
The last step is to apply secondary sealant, typically polyisobutylene (PIB) or a similar product. This is applied to the edges of the frame's exterior, where it creates a secondary seal capable of repelling moisture and prevent air penetration and increase energy efficiency.
Then, the frame is finished with aluminum cladding. This is a protective coating that is able to withstand the elements, and keep your frame looking new for many years to be. It is a wise investment to ensure the durability and beauty of your home's frames, particularly if you have federation or period style homes with timber frames that are prone to get rotted.