Glassary - U

Glassary - U

Ultraviolet transmittance:
the proportion of incident UV radiation transmitted by the glass, expressed as a fraction.

Unit:
an abbreviation of insulating glass unit.

U value:
a measure of the rate of heat loss through the wall of a building material. Also described as thermal transmittance. U values depend on several different variable factors, such as wind speed and temperature, so they are usually quoted in relation to a specific set of steady state environmental conditions.

UV curing resin:
a resin that has to be exposed to UV light in order to cure. This sort of resin is used in the manufacture of cast-in-place laminated and for sticking decorative features such as applied bevels to glass.

UV filter interlayer:
an interlayer in a laminated glass, which blocks the majority of the UV radiation.
See Product Data Sheets on Pilkington Laminated Safety Glass and Pilkington Anti-Fade™

UV Filter Layer:
an alternative term for UV filter interlayer. See Product Data Sheet on Pilkington Laminated Safety Glass and Pilkington Anti-Fade™

UV light:
an alternative term for UV radiation.

UV protection:
an alternative term for UV reduction.

UV radiation:
the part of the electromagnetic spectrum with a slightly shorter wavelength than visible light, within the UV range, known as ultraviolet light or UV light.

UV range:
the wavelengths of the electromagnetic spectrum usually described as being UV radiation. There are two common descriptions, the ISO range (280-380 nanometers nm) and the Parry Moon range (from 300-400 nanometers nm).

UV reduction:
the proportion of UV radiation, which is blocked by the glass.

UV Screen ™:
This is the old brand name for Pilkington Anti-Fade™ (see Product Data Sheet) our range of Cast-in-place, laminated glass.

These products incorporate a special UV filter interlayer that depending on the product selected can greatly reduce or eliminate altogether UV transmittance.

UV transmission:
an alternative expression for UV transmittance, expressed as a percentage.

UV transmittance:
the proportion of incident UV radiation transmitted by the glass, expressed as a fraction.

We value your privacy.

We use cookies on this website for analytics, remarketing, social media (optional) and content (essential) purposes.

By clicking ‘Accept All’ you consent to the use of cookies for non-essential functions and the related processing of personal data. Alternatively you can reject non-essential cookies by clicking ‘Essential Only’. You can adjust your preferences at any time by visiting our Cookie Policy and access the settings on that page.

For more information please read our Cookie Policy.