Does PVD coating change the surface finish?
PVD is applied over a base finish, so the substrate roughness and grain still read through the colour. A colour is therefore always specified as base finish plus PVD colour, never as a colour on its own.
Two different products
PVD over a mirror-polished base gives a coloured mirror. PVD over No. 4 or hairline gives a coloured brushed surface. They share a colour name and nothing else.
What the coating adds
Colour and a harder top layer. Gloss shifts slightly because a film has been added over the grain, so the coated panel never matches the uncoated base exactly.
What to approve
A physical sample of the exact base finish and colour combination, under the project lighting. Approving a colour swatch without the base finish is the most common PVD approval error.
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