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+ Frequently Asked Questions

How much does it cost to double glaze a house UK?

Double glazing is a product that can run between £150 to £600, depending on the size, type of window and the location. The price variances are due largely because different windows require different materials and labor time as well as varying sizes.

How do double glazed windows work?

Double glazing is a great way to keep your home warm and quiet. Double-paned windows are thermally insulating- they hold the heat from the sun and central heating in during the day, and then trap it inside at night. The gas layer acts as an insulation barrier for noise too, which means you can enjoy some peace and quiet.

What are the disadvantages of double glazed windows?

Although double glazing is more expensive than single glazing, the saving on your energy bills cover the difference over the years. When it comes to selling, energy efficient properties sell for more money and quicker than non-energy efficient properties so although double glazing might be a bit more money upfront the cheaper bills and added value make double glazing an easy decision.

Can you Demist double glazing?

In most cases, you don't need to demist double glazing as it should clear by itself. Condensation on the outside should clear up with warmer temperatures during the day. Make sure you let plenty of air circulate if the condensation is on the inside.

Can you repair misted double glazing?

Repairing a blown double glazed window is no easy task. You have to seal the entire window so it isn't as if you can just renew the seal on the pane of glass that was damaged which doesn't solve any problems with foggy or condensation issues within your panes. In the majority of cases, buying new glass panes is cheaper then repairing misted/ blown glazing units.

How long does double glazing last?

A double glazed window produced today will last for 25-30 years on average. If it is fitted in a sheltered location, not subject to any extreme weather and maintained, the lifetime can be increased by an additional 10 years.

Does double glazing lose its effectiveness?

Double-glazed doors and windows are made up of two sealed sheets of glass with an insulating void between them. However, over time the effectiveness of this double-glazing can wane, especially if the seal goes around only one pane of glass. This allows air to replace either a vacuum or inert gas that would normally be between the panes.

How do you get rid of condensation in double glazing?

Condensation happens on a solid surface which is in between a warm and cold area. As the moisture in the warm air cools on the surface it gathers forming water droplets. To reduce condensation you will need to reduce the amount of moisture inside your home.
Keeping your property at a constant (and reasonably warm) temperature will reduce the number of cold surfaces and make it harder for condensation to form. Use an extractor fan or open the bathroom window when getting a shower or bath to allow moisture to escape. This will also prevent water vapour from circulating in your home. Drying clothes inside and not using the kitchen extractor fan can also create condensation.

Can you fit double glazing yourself?

It is possible to double-glaze yourself and taking this course of action will enable you to save a somemoney. However, unless you are proficient, highly competent, and have all the right tools, it could be a disastrous and expensive decision to install DIY double glazing.
It's possible to do your own window installation yourself with some training, but if you're not an expert on installing windows then it might end up costing you more in the long run. A installation certificate is required when you sell your property for the installation of windows which if you have installed them yourself you would need to seek legal advice.

How do double glazed windows work?

Double glazing uses two panes of glass separated by a layer of argon gas to keep your home more energy-efficient and reduce sound. The argon gas is a poor heat conductor and therefore keeps warm air from escaping, while the second pane of glass acts as a barrier to noise. This means that you'll be saving money on heating and cooling costs all year round without compromising the comforts in your own space.

What does double glazed mean?

A double-glazed window is made of two pieces of glass that are separated by an air gap. The gas in the air gap acts as insulation to keep heat from escaping and cold air from getting inside. These windows are easy to install because they do not require any installation hardware other than screws or clips which hold the frame together.

How do double glazed windows reduce heat?

When it comes to insulating your home, you may have noticed that double-pane windows are very popular. But how exactly do they work? Double pane glass prevents heat loss by creating a pressurised barrier inside the two glass panes filled with a special gas. This provides an insulating barrier which is perfect for saving your money and keeping your home cozy.

Can you just replace the glass with double glazing?

The depth of double glazing is much greater than single glazing pane so it is often impossible to swap out single glazing for double glazing in the same frame. If you currently have single glazing, the whole window will be removed and replaced with a new high-performance double glazing window (glazing and frame).

How does double glazing help keep a house warm?

Double-glazing is a window consisting of two panes of glass separated by argon gas. The layer of argon gas has 67% thermal conductivity, which means it's not very good at keeping heat inside your home. This also helps improve energy efficiency because the warm air can't escape easily.

Can you replace just the glass in a double glazing window?

It is possible to replace the glass inside the frame of a window. The depth and size needs to be as close to as the original window pane as possible to ensure a good fit. The replacement window pane needs to be snug in the frame. Windows with blown/misted glass lose their energy efficiency performance and that is why it is important to get them replaced immediately.