Somewhere between a flat, primer-like finish and a deep, high-gloss shine lies an increasingly popular option: satin clear coat. This unique finish provides many of the protective benefits of a gloss clear, notably UV protection in 2K (catalyzed) formulations. It delivers a more natural appearance on period-correct projects where a clear coat would have never been used. And it makes a great way to seal in a natural patina or historical details like vintage lettering or stripes.
Choosing between different types of clear coats requires understanding the differences in gloss or sheen. The gloss level of automotive paints is determined by the percentage of light that is reflected off the paint surface. A high-gloss paint, including show car clear coats, runs about 85% reflectivity. Lower-gloss finishes, such as traditional enamels, fall in the 50-70% range. Satins often range from about 20-35% gloss, whereas matte finishes are often in the 10-20% neighborhood. Anything below 10% is considered a flat. These ranges also vary occasionally depending on the paint type and its manufacturer.
Why Use Satin Clear Coat?
As with most paint decisions, the rationale for choosing one product over another is deeply personal and often irrational. That’s a polite way of saying there’s no wrong answer. However, there are several good reasons why a satin clear might be the better option.
Satin finishes have a soft sheen that reflects less light than semi-gloss or gloss paints. For cars produced with metallic finishes prior to the 1970s, satin clear reproduces the most accurate look. Even if your vehicle isn’t a period-correct restoration, satin provides a velvety appearance without the high shine. It can be the perfect choice for a more understated look on certain vehicles.
Another great use for satin clear is to preserve the classic finish of a naturally aged original-condition vehicle. In this case, the clear coat locks in and protects the remaining finish from further fading and wear. Fine details such as hand-painted signage and lettering or decorative pinstripes can be saved for posterity. Satin clear can help preserve these features while blending with the surrounding area.
Another less obvious use might include clear coating different sections of a vehicle with different clears. This can create a subtle contrast while using the same base coat color, for instance. Applying satin clear to the underside of a panel like a hood or a decklid can replicate a non-clear coated factory finish.
The options are endless for how you use a satin clear. However, when choosing one for exterior surfaces, opt for 2K satin clear coat when ever you can. Whether you spray it with a paint gun or from an aerosol can, this will give you improved protection from UV damage, chemicals, and general wear compared to single-component, air-drying finishes.