What Is Replacement Sealed Double Glazing Units And Why Is Everyone Talking About It?

· 6 min read
What Is Replacement Sealed Double Glazing Units And Why Is Everyone Talking About It?

Replacing Double Glazed Units

Replacing double-glazed units is a home improvement project which can significantly reduce heat loss, enhance the insulation of noise and reduce heating costs. Modern coatings and argon/krypton gas-filled units make them extremely energy efficient.

The new unit, built to exact measurements, is awaiting its time. It needs care and accuracy. This is the moment that halts time and puts everything into perspective.

Then, remove the old unit

Removing the old unit is a crucial step to ensure that the new double-glazed window is built to exact measurements. Clean the frame with care to remove dust, dirt or old sealant. Repair  replacing window seals Repair My Windows And Doors  that's present. Small repairs can be made with sanding or wood filler, while major damage may require professional repairs.

When the glass is removed, it's important to measure its height, width, and thickness. The most effective method to do this is to take out the glass beads that bind the unit. This is a delicate process that requires patience and care. Be patient, and wear safety gear to avoid slips and shards.

Begin by stripping the lower part of the glazing strip with a chisel that is sharp, or a wide-bladed screwdriver. After the bead is removed, it is recommended to seek assistance from a person who can hold the sealed unit while you take out the remaining beads. This is because the unit can easily be thrown out of the frame and break.

After all the beads have been removed, it is crucial to take careful measurements of the dimensions of the width, height and thickness of the unit that is currently in use. The measurements can be used to construct the replacement unit you want for your home. It can also be used as a reference to ensure that the new unit is sized properly for the frame. This is important as a misfit will not only cause the need to remove and reassemble the entire window but it will also impact its performance and efficiency. This is particularly important in Australia where homes are frequently exposed to extreme weather conditions.

Preparing the Frame

If you're replacing a fixed window or a sliding one with a fixed or opening sash, ensure that your new window is of the correct size. UPVC frames allow only a small amount of movement and a sealed double glazing unit that is a few millimeters too big is likely to not fit. To ensure accurate measurements take care to measure accurately and consult a professional.

Once you have a clear understanding of the dimensions of your replacement, and you are sure it's fitted correctly remove the glass from its frame. Wear protective equipment, such as gloves and work in a location that is well-lit to avoid injuries from glass shattering. Utilize a putty knife to remove the glaze stripes or beads that hold the glass to the frame from the edges of the pane. The glass is hard and you must be cautious to avoid sliding or straining the frame.

When the frame is ready to receive the brand new sealed double glazing unit, make sure that it will be able to open and close smoothly. It should be a tight fit, but you can adjust it if you need to by adding or removing packing. For instance, if the frame is a sliding door, you might need to add additional packers at the top of the hinge and at the opposite corner to prevent the sash from getting caught or rattling when it opens.

Then clean the frame. Remove any old sealant or glazing tape If needed. Check for any damages and make small repairs with wood filler or sanding, if required. The frame will be rehabilitated with a final cleaning and inspection so that it can stand up to the harsh Australian weather for a long time.

Lifting the New Unit


Over time, double glazed sealed units (or a  sealed unit as it is often called) may face problems like moisture between panes or misting. This can reduce the efficiency of your windows, allowing cold air to pass through and warm air from your heater to escape, leading to high energy bills and discomfort.

This type of failure in seals is usually caused by age, general wear and tears or harsh chemical cleaners that deteriorate the sealing material. Sometimes however, the reason can be attributed to the expansion and shrinking of the glass due to temperature changes and seasonal changes.

After the frame is cleaned and ready, you can start lifting the new unit in the right place. This is a thrilling step because you've created a positive impact on your home, improving its temperature in the winter months and cooling it in summer, and aiding in reducing your energy bill.

It is crucial to ensure that the new piece fits into the frame before securing it in place. This is crucial to avoid damaging the frame and the glass.

If you are using sealing tape or glazing tape on your windows, now is the best time to apply a small amount of the tape along the edges of the glass. This creates a strong barrier that blocks air and moisture from entering the window. Be certain to tighten the sealant in a controlled manner, but not so tightly that it causes stress to the glass or frame. Enjoy your newly installed double-glazed windows and give yourself a pat on the back for an excellent job!

Secure the Unit

This is the moment when the work is done. The unit will be snugly set in the frame and a fresh sealant will be applied around its perimeter. The unit is now secured to withstand Australia's varied weather conditions, a guarantee for warmth in winter and cooling in summer. This is the time when your meticulous measuring and removal is confirmed, a confirmation that a product was designed to exact dimensions.

It is crucial to find the perfect balance between the need to secure the unit and not stressing the glass. If it's too loose, the unit might lose its airtight seal. If it's too tight, it could cause damage to the frame or weaken the material. Each screw must be placed in its original place, and turned to just the right amount to secure the unit without putting pressure too high.

This is the final stage in a transformative project that enhances the comfort of a home and energy efficiency as well as its appearance. With the new double-glazed unit firmly seated in the frame and securing the fresh sealant around the perimeter This is the moment that marks your work's completion.

The insulating cavity between panes of glass is filled with either argon gas or a desiccant. Argon, unlike air, has a lower thermal conductivity which reduces heat transfer. In addition the desiccant absorbs moisture from the air, preventing condensation and mould from forming in the frame. The spacer bar is made of aluminium and is an essential component of the insulation system. The aluminum blocks the transfer of heat but also keeps the edges of the glass insulated warm to avoid condensation.

Checking Your Work

It is important that you leave the silicone sealant to set after you have put in the new device. It will take at minimum 4 hours for it to reach its maximum strength and provide an impervious barrier. While you sit, take the time to look over your work and see if you are able to identify any gaps or issues that could compromise the efficiency or appearance of the device.

It is also a good time to check the frame and seals for signs of damage that require attention, and to assess whether replacement of the entire window is necessary. A damaged seal can have a significant impact on the efficiency of your home's energy use, causing drafts or cold spots. It also allows ultraviolet rays in to the home which can cause furniture to fade, and carpets and curtains to wear more quickly.

If you're experiencing any of these problems, your double glazing may need to be replaced. If you take care of it promptly, it will reduce your energy bills and provide a more comfortable, relaxed home environment.

It is a complex and labor-intensive procedure that requires the correct equipment, precise measuring and careful preparation. It is not an easy DIY project and should be done by a specialist who has prior experience with uPVC Windows and Doors. They can ensure that the new unit is installed correctly to shield your home from the elements. Their experience will ensure that the double-glazed model you choose is quiet and efficient and provides warmth in winter and cooling in summer. This will help protect your home from the elements.