noun
EXAMPLES FROM CORPUS
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After priming, the correct colour undercoat is applied, followed by two coats of gloss.
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Amount of undercoat is influenced by climatic conditions.
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But it's rather interesting - it's brown undercoat .
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Hammerite is a unique paint: it dries to a very hard finish, and needs no primer or undercoat .
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In some places the reddish undercoat of the frame shows through the gold moulding, echoing the reds in the picture.
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It can be used on wood and metal, and needs no primer or undercoat .
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The undercoat is grey or black.
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Yellow ochre is a colour I often use for both undercoats and overpainting, having a good semi-transparent quality.