20 Resources That Will Make You More Efficient With Replacement Double Glazing Sealed Units
Replacement Double Glazed Units
Over time double glazed units (or sealed units as they are usually known) can break down. This typically happens when the insulating properties of the inert gas between glass panes break down.
When a window has broken down it's important to replace the window to ensure that your home is fully insulated and energy efficient. The task is relatively easy and straightforward.
Installation
If the window was fitted correctly, the new window should be able to fit comfortably and securely within the frame. If the new unit isn't the same thickness as the old one, you may have to alter the "packers" (usually red or blue slips of plastic) within the frame to ensure that it is properly positioned. Check with your installer or the instructions provided by the manufacturer if you're not sure.

A top-quality replacement double-glazed sealed window is manufactured to the highest standards, and should fit in your frame with ease. A small error can have a significant impact on the performance of your window.
Modern double glazed units are an energy efficient addition to any home. They utilize an argon gas layer between the panes to insulate and thus reduce the amount of heat that could escape your home in cold weather.
Sometimes, these units may have issues with their seals. This happens when moisture enters the air cavity and creates condensation. The presence of moisture in the window's cavity is not just unsightly, but also affects the efficiency and effectiveness of the glass unit.
Condensation can be caused by a range of factors and the best way to check is to look for a cloudy or misty look between the windows. This is an indication that the seal between two panes has ruptured and moisture is pouring into your living space.
The first step to take is to remove the glazing beads around the edges of your window. This can be a little tricky and a bit messy, but it is worth the effort because it lets you access the wedge gasket that keeps your glass in place. It is essential to take care when removing the beads to ensure they don't break. A little help from a friend can be helpful at this stage. Once the beads are removed, allow the sealed unit to loosen a bit of the frame. With a helper to hold it in place while you accurately take measurements of its length, width and height. This information is essential as it will determine what size wedge gasket you need to cut for your new double-glazed sealed units.
Checking
Double glazing units or sealed units, as they are often called, can break down over time. This normally occurs due to a breach in the seal, which allows condensation and moisture to enter the space between the panes. This affects the ability of the window to keep cold air out, and warm generated by the home's heating in, and solar energy from the sun inside.
The failure of seals can cause draughts within the home. It is important to regularly check your double-glazed windows for indications of failure. If you see moisture or mists between the glass, this is a sign that the seal is not working and a new one should be installed.
It is crucial to replace the sealed unit with the proper size. The uPVC frames that the sealed unit is positioned have a very limited tolerance for movement, meaning that even a few millimetres could affect the performance of the windows. Consult a professional or the guidelines provided by the manufacturer to ensure you purchase the right size.
With a helper holding the new piece, gently place it in the frame. This should be done in a secure location as the glass could break if it falls. Once the sealed unit is securely in the frame re-attach any packers at the bottom of the frame and then put the glazing beads back into their original position. Once you have done this give the entire window a thorough examination to ensure that there aren't any gaps or areas of misalignment that could impact its performance.
You may need to add some sealant around the frame's perimeter in order to prevent it from moving. It is also a good idea to re-check the thickness of the glass unit. This is important as double glazed units are available in different thicknesses, and a wrong thickness could affect the u-value of your home's insulation.
Sealing
Double glazing can improve the thermal efficiency of your home and also provide better audio. Over time, the seals of the glass may wear out resulting in condensation or drooping windows. In these situations it is necessary to replace the glass. It's a good idea to work with a double glazing professional who can assist you in selecting the most suitable glass products, make precise measurements and ensure proper installation.
The first thing that needs to be done when replacing an item that is sealed is to clean the frame. Use a paintbrush from the past (4 inches is ideal) to clean the frame, removing dust that has built up over time. It's a great idea to clean the new seals 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 at the point where it is in contact with the friction joint. Take repairmywindowsanddoors of the time frame you'll need to use the new seals. This will help when cutting them.
Once the gaskets are cleaned and the frame is clean, it's time to put in the sealed unit. It's a good idea take off the beads (the UPVC frames clips that hold the glasses) and then measure them. This will ensure that the seal is made to the correct size and will not leave gaps around it.
When the beads are back in place you can insert the top bead, and then proceed to the next three. You should be careful not to touch the sealed units for a while afterward, as the silicone sealant will need some time to set and harden before you can use it again. I usually leave it for about 6 hours before handling, but this can vary based on your silicone sealant's setting times.
Finishing
When the new double-glazed unit is secure within its frame It's time to seal and finish. This step is more than a physical conclusion to the project; it's an assurance that your home is now ready to withstand the elements with a new safe guardian in the right place.
The first step is cleaning the frame and taking out 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 the aluminium or timber frame. It's also a good time to assess any damages and make small repairs by using wood filler or sanding when necessary. For major damage, you should seek out an expert.
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 standard practice for a warm edge sealed unit. Thermoseal Group stocks desiccants as well as manual and automated desiccant dispensing devices.
After the spacers are filled with the spacers, the glass and frame are sealed using a high-performance silicon, specifically designed to withstand Australia's tough climate. This sealant creates a tight barrier that is both durable and flexible capable of expanding and expand without becoming brittle or breaking. It's crucial to select the correct thickness, since any gaps can impact the thermal performance. Talk to a professional or consult the manufacturer's guide if you are unsure about the right thickness for your.
The final step involves adding secondary sealant. It is typically polyisobutylene, or a similar substance. It's applied to edges of the frame's exterior which creates a secondary seal capable of repelling moisture and prevent air penetration, helping to increase the efficiency of energy.
The frame is then adorned with an aluminum cladding. This is a protective coating that can withstand the elements, and keep your frame looking like new for a long time to be. This is a smart investment to ensure the durability and the beauty of your home's frames, particularly if you have period or federation style homes with wooden frames that are susceptible to get rotted.