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Compare glazing options

Compare different window glazing options: Seven different window glazings were compared side by side using over 17 parameters, including important factors such as thickness, u-value, and guarantee.

We also evaluated their suitability for installation into period wooden windows.

When it comes to selecting the right glazing for your window restoration project, choosing the right option is crucial. This decision is just as important as selecting a sash window restoration company which will do the actual installation work.

Windows with single-pane glass can be less energy efficient and offer less insulation than those with double or triple panes, but triple glazing is unsuitable for retrofitting.

Different types of window glazing, such as Low-E coatings, vacuum-insulated double glazing, gas-filled panes, and laminated glass, can enhance the performance of your windows by reducing heat loss, blocking UV rays, and minimizing noise pollution.

Comparing different window glazing options can help you make an informed decision that will improve the comfort of your living space and save on energy costs in the long run.

To compare window glazing options, please select the type of glazing you want to compare.

You can compare up to three glazing options simultaneously on desktop and up to two on mobile devices.

Alternatively, you can compare different glazing options by following the links below:

Old double glazing vs new.

Triple glazing vs Double glazing

Suitable for retrofitting

Warranty & Lifespan

Warranty

25+

Estimated Lifespan

Warranty

25+

Estimated Lifespan

Warranty

25+

Estimated Lifespan

Warranty

25+

Estimated Lifespan

Warranty

15+

Estimated Lifespan

Warranty

20+

Estimated Lifespan

Warranty

25+

Estimated Lifespan

Warranty

25+

Estimated Lifespan

Warranty

25+

Estimated Lifespan

Warranty

25+

Estimated Lifespan

Warranty

15+

Estimated Lifespan

Warranty

20+

Estimated Lifespan

Warranty

25+

Estimated Lifespan

Warranty

25+

Estimated Lifespan

Warranty

25+

Estimated Lifespan

Warranty

25+

Estimated Lifespan

Warranty

15+

Estimated Lifespan

Warranty

20+

Estimated Lifespan

Warranty

Energy efficiency

0.7

U-Value W/m2.k

5.8

U-Value W/m2.k

0.69

U-Value W/m2.k

1.1

U-Value W/m2.k

0.48

U-Value W/m2.k

1.9

U-Value W/m2.k

1.2

U-Value W/m2.k

2.6

U-Value W/m2.k

0.7

U-Value W/m2.k

5.8

U-Value W/m2.k

0.69

U-Value W/m2.k

1.1

U-Value W/m2.k

0.48

U-Value W/m2.k

1.9

U-Value W/m2.k

1.2

U-Value W/m2.k

2.6

U-Value W/m2.k

0.7

U-Value W/m2.k

5.8

U-Value W/m2.k

0.69

U-Value W/m2.k

1.1

U-Value W/m2.k

0.48

U-Value W/m2.k

1.9

U-Value W/m2.k

1.2

U-Value W/m2.k

2.6

U-Value W/m2.k

Vacuum port / Plugs

Getters

Yes, along unit edge

Yes, circle in corner

Yes, along unit edge

Yes, circle in corner

Yes, along unit edge

Yes, circle in corner

Microspacers

At 20mm centres

At 70mm centres

At 20mm centres

At 70mm centres

At 20mm centres

At 70mm centres

Thickness

7.7 mm

Thickness

3-5 mm

Thickness

6.2 mm

Thickness

8.3 mm

Thickness

12 mm

Thickness

24 mm

Thickness

7.7 mm

Thickness

3-5 mm

Thickness

6.2 mm

Thickness

8.3 mm

Thickness

12 mm

Thickness

24 mm

Thickness

7.7 mm

Thickness

3-5 mm

Thickness

6.2 mm

Thickness

8.3 mm

Thickness

12 mm

Thickness

24 mm

Thickness

Unit Make Up

4 – 0.7 – 3

4 -12 – 4 -12 – 4

3 – 0.2 – 3

4 – 0.3 – 4

4 – 4 – 4

4 -16 – 4

4 – 0.7 – 3

4 -12 – 4 -12 – 4

3 – 0.2 – 3

4 – 0.3 – 4

4 – 4 – 4

4 -16 – 4

4 – 0.7 – 3

4 -12 – 4 -12 – 4

3 – 0.2 – 3

4 – 0.3 – 4

4 – 4 – 4

4 -16 – 4

Cavity thickness

0.7 mm

24 mm

0.2 mm

0.3 mm

4 mm

16 mm

0.7 mm

24 mm

0.2 mm

0.3 mm

4 mm

16 mm

0.7 mm

24 mm

0.2 mm

0.3 mm

4 mm

16 mm

Insulation

Vacuuum

Argon gas

Vacuuum

Krypton gas

Argon gas

Air

Vacuuum

Argon gas

Vacuuum

Krypton gas

Argon gas

Air

Vacuuum

Argon gas

Vacuuum

Krypton gas

Argon gas

Air

Visible Light Transmittance

79%

64%

78%

79-85%

81%

81%

79%

64%

78%

79-85%

81%

81%

79%

64%

78%

79-85%

81%

81%

Manufacture Location

Belgium 🇧🇪

UK 🇬🇧

Japan 🇯🇵

China 🇨🇳

UK 🇬🇧

Belgium 🇧🇪

UK 🇬🇧

Japan 🇯🇵

China 🇨🇳

UK 🇬🇧

Belgium 🇧🇪

UK 🇬🇧

Japan 🇯🇵

China 🇨🇳

UK 🇬🇧

Lead-timed

6-8 weeks

4-6 weeks

16 weeks

10 weeks

2-4 weeks

6-8 weeks

4-6 weeks

16 weeks

10 weeks

2-4 weeks

6-8 weeks

4-6 weeks

16 weeks

10 weeks

2-4 weeks