Notes

There Are A Few Reasons That People Can Succeed With The Replacement Double Glazing Sealed Units Industry
Replacement Double Glazed Units

Double-glazed units, or sealed units, as they're called, may be damaged over time. Seals and Gaskets Replacement happens due to the insulating properties of the inert gas that is between the glass panes break down.

When a window has broken down, it's crucial to replace the unit to ensure that your home is properly insulated and energy efficient. The task is easy and straightforward.

Installation

If the window has been installed correctly, the new unit will be firmly seated and fit snugly inside the frame. If the new glazed unit isn't of the same thickness as the older one, then you might need to adjust the existing "packers" (usually red or blue slips of plastic) within the frame to ensure it is properly placed. 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 no hassle. A minor mistake can have a significant impact on the performance of your window.

Modern double glazed units are a fantastic energy efficient addition to any home. They are constructed with an argon gas layer between the panes to insulate and reduce the amount of heat that can escape your property during cold weather.

Sometimes, these units may develop issues with their seals. This typically happens when moisture is introduced into the air space of the glass and causes condensation between the panes. The presence of moisture in your window is not just ugly however it also decreases the efficiency of the glazed unit.

You can spot a cloudy or a misty appearance between your window panes. This is a sign that the seal between the two panes has broken and moisture is leaking in to your living space.

The first thing you need to do is to take off the glass beads that surround the edges of the window. It can be a bit difficult and messy, but it's worth it as you will have access to the gasket for wedges that keeps your glass in place. You will need to remove the beads with care so that they don't break and it is often an excellent idea to seek help at this point. Once the beads are removed allow the sealed unit to fall back slightly out of the frame. Then, using help from a person, keep it in position while you measure it accurately length, width and the thickness. This is important because it determines the dimensions of the wedge gasket that you need to cut for the new double glazed sealed unit.

Checking

Double glazing units or sealed units as they are commonly called, can break down over time. This is usually due to leaks in the seal, which lets condensation and moisture into the space between the panes. This can affect the way the window can keep out cold air, heat produced by the heating system in the home, and solar gain inside.

A seal failure can cause draughts in your home. It is essential to check your double-glazed windows for signs of failure. If you see water or misting between the glass, this is a sign that the seal is failing and a replacement unit must be installed.

If you do need to replace a sealed unit, it is essential that the new one is the correct size to fit. 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 have an impact on the performance of the window. Get advice from a professional or follow the guide that is provided by the manufacturer to ensure that you get the correct size.

With the help of a person who holds the new unit, gently place it in the frame. It is vital to place it in a secure location as the glass is fragile and can break or fall out. Once the sealed unit is fixed to the frame, attach any packers that are on the bottom of frame and then replace the glazing beads into their original positions. After you've completed this make sure you give the window an inspection thoroughly to make sure there aren't any gaps and that it is not misaligned.

It may be necessary to apply a bit of sealant to the perimeter edge of the frame to prevent it from moving in the future. Reviewing the thickness of the unit is also a good thing to do. Double-glazed units are available in various thicknesses. Making the wrong choice can have a negative impact on the value of your home.

Sealing

Double glazing can increase the thermal efficiency of your home and provide better audio. However, over time the glass's seals can wear down resulting in misted windows and a reduction in performance. In these cases replacement is required. It's a good idea consult a double-glazing professional who will help you select the best glass products, make precise measurements and ensure that the installation is done correctly.

When replacing a sealed unit, the first step is clean the frame. Make use of an old paintbrush (4 inches is the best) to clean the frame, taking off dust that has built up over time. It's a good idea to clean the new seals after the frame has been cleaned. The easiest way to do this is to remove the Wedge gaskets by placing your fingers on the edge and then pulling it out at the point that it overlaps with the friction joint. Take note of the length of time you'll need the new seals. This will assist when cutting them.

Once the gaskets are cleaned and the frame is clean, it's time for the sealed unit. It's a good idea remove the beads (the UPVC frames clips that serve to hold the glasses) and then measure the size of them. This will ensure that the seal is constructed to the right size and won't leave any gaps around it.

After the beads are in place you can insert the top bead and then move on to the next three. After sealing the units, you should not touch them for a few hours because the silicone sealant needs to set and harden. I usually leave it for about 6 hours before handling but this could depend on the silicone sealant's setting times.

Finalization

Sealing and finishing the project is now required once the new double-glazed unit has been securely installed within its frame. This is more than a physical closure to the project. It's an affirmation that your home is ready to weather the elements with its new safe guardian in place.

The first step is to clean the frame taking care to remove any glazing strips or beads that held the old glass. The frame is then scrubbed clean of dirt, sealant or glazing tape. This process also renews the frame made of timber or aluminium. This is also the time to make any small repairs by using wood filler or sanding, if needed. For more serious damage, you should consult an expert.

Next, the tubes for the spacer are filled with desiccants to absorb any moisture trapped in-between the two glass panes in the course of manufacture or later on. This is a typical procedure for units with warm edges. Thermoseal Group stocks a range of desiccants and manual or automated dispensers of desiccant.


After the spacers are filled with glass, it is sealed with a highly-performing silicone designed to withstand the harsh conditions of Australia's climate. This sealant forms an airtight barrier that's extremely flexible and durable, and can expand and contract without breaking. It is crucial to choose the right thickness since any gaps could impact the thermal performance. Talk to a professional or consult the manufacturer's guide in case you're not sure about the thickness you should use.

The last step is to apply an additional sealant, usually polyisobutylene (PIB) or similar products. It is applied to the outside edges of frames to create a secondary seal. It can repel moisture and block air infiltration, thus increasing energy efficiency.

The frame is then finished with an aluminum cladding. This protective coating can withstand the weather and keep your frame looking brand new for many years. This is a wise investment to ensure the longevity and aesthetics of your frames, especially if you have federation or period homes with wooden frames that are prone to get rotted.

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