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Replacing Double Glazed Windows

Whether you want uPVC Sash windows or aluminium casements, there's a wide selection of options to suit the aesthetic of your home and your energy efficiency needs. Modern double glazing offers a variety of benefits, including noise reduction, UV protection and property security through multipoint locking mechanisms.

However, what can you do when your double glazing shows signs of wear and tear?

1. Excessive Condensation

In the winter, when windows and doors are closed, condensation may form inside the glass panes if the air temperature is warmer than the window's surface. This is a natural occurrence that can be prevented by opening windows, improving ventilation more generally, running a dehumidifier and keeping moisture levels low with extractor fans. However, if condensation forms regularly on the interior of your windows this is a sign that the double glazing has failed and it needs replacing as soon as possible.

Condensation on the outside of your windows is normal and indicates that your double glazing unit is operating as it is supposed to. Condensation on the outside of your windows in the morning is due to the glass's temperature dropping below the dew point of surrounding air, which causes water vapour to be drawn up from the air and into the cold glass, which then condenses. This is aggravated by the presence of plants within your home that produce excessive moisture as well as high humidity.

When condensation appears within your double glazing, it is a far more serious issue. It is a sign that the seal between the two glass panes has been broken and allows warm air from your house to find its way in while insulating gas is evaporating. This can cause serious damage to your double glazing and if not addressed, could have a significant impact on the cost of energy.

Having replacement double glazing installed when you first detect this kind of condensation can drastically decrease the possibility that the issue gets worse, saving your money in the long run. Replacement double glazing windows of your double glazing could also be a great way to upgrade to A-rated energy-efficient windows which will make your home more comfortable as well as reducing your energy bills further.

2. Signs of wear and tear

Double glazing can provide many benefits including the reduction of energy costs and noise. Like all products double-glazed windows have a life span. It is crucial to recognize the signs when they are at the end of their lifespan.

One of the most obvious signs is the visible condensation. This is caused by the difference in temperature between the two glass panes and if you see this, it's an indication that the window seal is damaged and it's time to have the windows replaced.

If the window seal is not working, then cold air can be allowed to enter your home, which not only wastes energy but can also cause damp and mould and both are costly to fix. Additionally, both damp as well as mould can be harmful to your health because they can produce allergens and irritants that could impact on your family's wellbeing.

Draughts around your windows are another sign that the sealants have started to wear. This allows outside noise to enter your home, which could be a distraction. This can impact your ability to work from home or how peaceful your home is.

If the windows aren't opening and closing in a smooth manner It's also an indication that they require to be changed. This could be a security issue if windows aren't able to open in the event of a fire, and should not be ignored. A professional window fitter will be able evaluate the condition of your current windows and give suggestions on the best method of action.

3. Draughts

If you are experiencing draughts out of your windows, it's likely that the seals in your double glazing have failed. Sealant is used to hold the glass panes in place and provide insulation. However, it can be damaged by weather changes or simply ageing. In the result cold air enters your home and warm air is emitted which can cause draughts and lower energy efficiency.

A window frame that is shaped incorrectly and is not sealed properly could also cause draughts. Moisture may also get trapped within the window frame, leading to draughts over time. This is a serious problem and you should replace your double-glazed windows as soon as you can.

A misted double-glazed window indicates that the sealed unit has leaked or gas has escaped between the panes. This is a serious problem and needs to be repaired immediately to prevent water entering your property, stopping heat from leaving and reducing the efficiency of your insulation. If your windows are covered by warranty, you can request the company to replace them.

Cracks and chips in your double glazing aren't always a sign that they need replacing however, they can have a negative impact on their overall performance. They also decrease the amount light that passes through, causing drafts. If your windows have large cracks or chips, they might not be able support the weight of replacement units, which would require new window frames.

4. More Utility Bills

Energy costs are a significant expense for households and that's why it's important to keep them as low as is possible. The high cost of energy is not just expensive but also put an unnecessary stress on the environment. We all want to reduce this. Windows that leak are a major cause of high energy bills. They not only let heat escape from your home and into the outside, but they also cause drafts that require the use of additional energy to heat your house. Energy efficient windows can help you save money and cut down on your energy bills.

If you notice condensation on the double-glazed panes, it is an indication that your windows must be replaced. It's a sign the seal has failed which means that air is getting in and out of your house and that the insulation isn't functioning as it should.

Another indication that your double glazing needs replacement window glass is if they're misting up. This is a sign that the seal is broken and water is trapped between the glass panes. Having your double glazing replaced will stop water from getting into your home, preventing heat from leaving and help keep your home warm.

You can reduce energy usage and improve the appearance of your home and save heat by replacing your double-glazed windows by energy-efficient windows. This can also increase the value of your property and make it more appealing for potential buyers if you decide to sell it in the near future. With category B rated double glazing, you can expect to save as much as PS115 per year on heating costs, which can quickly pay for the windows you have purchased.

5. Faulty Windows

If you have a double glazed window that has become foggy, misty or hazy, this is an early sign that the seal has failed. It's also a sign that the glass has lost its insulation value and could lead to draughts and condensation. In addition, the gap around the edges of your windows can allow water to enter and damage your wall or plaster. This can also be a serious fire risk.

If the glass in your double glazing has turned cloudy, you must repair it as soon as you can as it's an immediate safety risk. It could also result in more in energy bills due to the loss in insulation.

The cause of misty windows is moisture in the air between the two panes of your IGU (insulated glass unit). The gas in the glass - usually argon or krypton - helps with insulation, and when the seal fails, this gas leaks out, causing the window to become fogged.

Examine your warranty to see if it covers premature seal failure. In certain cases manufacturers offer a prorated warranty which is based on the age of your windows, so this could be a viable option.

Other indicators that you should to replace your uPVC windows include: