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CI-2009 IEQc4.2:Low-Emitting Materials—Paints and Coatings

Flat and non-flat

I want to appologize if the answer on my question is to obvious but I currently have a language problem: 1. Here "flat" is meant in terms of brilliance / glossy? 2. Where is the limit/border between flat and non-flat paints. Typically there are different levels of brillance. So how do you distinguish if it is flat or non-flat?

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Sun, 08/26/2012 - 21:16

Flat means no gloss. Flat = Matte.

Mon, 08/27/2012 - 07:25

Thanks for the answer. The last queston is how to treat "semiflat" colors (e.g. "silk gloss", "satin gloss")?

Tue, 08/28/2012 - 17:03

There are some footnotes after the appendix of GS-11 regarding the "specular gloss level at 60i" that is determined by ASTM-D523-89 Standard Test Method for Specular Gloss. Flat paints register less than 5, non-flats are greater than 5. You may need to dig into the product literature or contact the manufacturer to find out the specular gloss level of your paint, but that should define the theshold between non-flat and flat if the name is unclear.

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