The U-value of a sealed unit is determined by the elements that are used to make up the sealed unit. The lower the U-value the better insulation performance of the unit, which is why our customers often want lower U-values, because they are proof of better performing products.
Just because a unit is triple glazed, it doesn’t necessarily mean that it will have a lower U-value when compared to double glazing. The U-value is determined by the countless combinations of elements that go to make up a sealed unit. We’ve included some examples to show you this below.
| Sealed Unit Width | U-values | Example Specification (Click below to view PDF) |
|---|---|---|
| 24mm | 1.0 | 4mm Clear, 16mm Argon, 4mm Planitherm One (1.0 U-value) |
| 24mm | 1.2 | 4mm Clear, 16mm Argon, 4mm Planitherm Total+ (1.2 U-value) |
| 28mm | 1.1 | 4mm Clear, 20mm Argon, 4mm Planitherm One (1.1 U-value) |
| 28mm | 1.2 | 4mm Clear, 20mm Argon, 4mm Planitherm Total+ (1.2 U-value) |
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