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2026.09.05 LION DANCE

on September 05, 2026

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How To: Repair/Avoid a BLUSHING When Applying Flat Top Coat

If you have sprayed flat top coat on a cold or rainy day, you probably have seen a layer of frost appearing, as shown in these heart breaking pictures: This is called BLUSHING : A milky appearance of a topcoat caused by high humidity where water condenses on or in the wet coating. This can be eliminated by use of heat or a slower solvent or retarder. (http://www.sharpe1.com/sharpe/sharpe.nsf/Page/Paint+Terminology) It appears that temperature (<13°C) and humidity (>90%) are the two major contributing factors. I have done several things in the past and try to solve this issue. Addressing Temperature Factor: Keep It Warm Addressing Humidity Factor Method 1: Using Semi-Gloss / Gloss Top Coat Spray a thin layer of semi-gloss or gloss should do the trick. Note this is just a quick fix. In my experience, applying another coat of flat afterwards will unfortunately bring back all blushing. So, flat no more . Addressing Humidity Fac...

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