When insulating your home, you quickly think of insulating your walls or roof, but do you ever think of insulating glass? This will eliminate condensation and draughts and save on your energy bill. Read all about insulation glass in your home here.
Isolation glass prices
Would you like to replace a window with single glazing by insulation glass and are you curious about the prices? The prices of insulation glass per m2 are on average between £115 and £170. The higher the insulation, the higher the price. In addition, the total price of insulation glass in your home naturally depends on how many windows you want to have replaced. See all the average prices for insulating glass below.
HR++ glass£ 130 HR++ glass£ 170
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What is insulating glass?
Before you opt for insulating glass, it is good to know exactly what it entails. Insulating glass includes all types of glass that insulate better than standard single or double glazing. This includes all types of HR (high efficiency) glass, normal double glazing is not included in insulation glass. More and more people choose insulation glass over double-glazing, because the insulation value of insulation glass is much higher. This means you save more on your energy bills and it is a lot more comfortable in your home.
Price examples
Are you curious about different scenarios when buying insulating glass? Check out 3 handy examples here.
Replace single glass in a broken window
Are windows broken and want to have the windows in your home replaced with double-glazing? If you go for only HR glass, you are choosing cheap double glazing with the least insulation value. This does not mean that the glass has no insulating effect, it just does not retain heat in the house as well. Are you having two windows replaced in your terraced house? Then this will cost you £200 on average.
Choose a small project
Are you not planning to switch to double glazing in all your windows straight away? Then choose to switch to insulating glass in stages and replace your windows in phases. Think about the living room windows, for example. With insulated glass, you will be more comfortable on the sofa and enjoy a warm living room. If you have 8m2 of window replaced with HR+ glass, it will cost you £1,000 on average. Going for HR++ glass? Then you will spend an average of £ 1,100.
Go for optimal insulation
Are you fed up with the cold and draughts in your home? Then it’s time to have all windows replaced for double glazing with the best insulating glass; HR+++. This is triple glazing or triple glazing with the best insulation value. If you have all the windows in your terraced house replaced, about 15 m2, this will cost you on average £ 2,600
What choices affect the insulation glass price?
If you are going to buy new glass and choose insulation glass, there are several choices that affect the price.
Choice 1: Type of insulation glass
There are different types of insulation glass, varying in insulation value. Here, the higher the insulation value, the higher the glass price. 100
HR+ glass£ 125£ 180 HR++ glass£ 130£ 300 HR++ glass£ 170£ 300
Choice 2: Thickness of the glass
The thicker the insulation glass, the better the insulation value and therefore higher savings. Insulating glass is available in different thicknesses, allowing you to choose the glass that best suits you and your home. Check out the different thicknesses and corresponding insulation glass prices here.
| Outside glass | Inside glass | Average price per m² |
|---|---|---|
| 4 mm | 4 mm | £ 42 |
| 5 mm | 4 mm | £ 45 |
| 6 mm | 4 mm | £ 50 |
| 6 mm | 5 mm | £ 52 |
| 8 mm | 5 mm | £ 64 |
| 8 mm | 6 mm | £ 66 |
Choice 3: New window frames
Old window frames are more likely to let in cold air, which means you won’t get as much benefit from your new insulating glass. It is therefore a good idea to have your window frames checked by a specialist for damage and defects. Are you opting for suitable, new window frames for your home? Check the average window frame prices below.
| Types of window frames | Average prices per m2 |
|---|---|
| Plastic | £ 750 – £ 1,000 |
| Wood | £ 850 – £ 1.200 |
| Aluminium | £ 850 – £ 1,100 |
| Steel | £ 900 – £ 1,300 |
Choice 4: Additional options
Besides having good insulating glass installed, there are also a number of smart additional options that will further increase your living comfort. Think for instance of ventilation in your new windows or solar control glass. See a handy overview in this table.
| Extra option | Average price (including VAT) |
|---|---|
| Ventilation grilles | £ 15 -£ 60 |
| Sunproof glass | £ 80 per m2 |
| Safety glass | From £ 40 |
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