What are newtons rings?

What are newtons rings?

Newtons rings are “In a large IGU, the two glass panes may be displaced by air pressure until they touch in the middle. When this happens, Newton’s Rings, which are roughly circular and coloured bands, may form in the centre of the unit. Newton’s Rings can easily be avoided in large IGUs by allowing cavities that are at least 12 mm wide to suit design wind pressures. Newton’s Rings are not considered a defect unless the customer has provided the end location and altitude of the glazing, and design wind pressures to Viridian Glass for design of the IGU.”

Download the IGUs in residential buildings – a guide to quality standards.pdf

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