Application: High Solids topcoats are more viscous, thus they tend to sag more than conventional topcoats. Painters learning to use high Solids material often overcompensate by applying less paint. Confirm dry film thickness meets minimum requirement. Suggest experimenting with smaller tip sizes.
Cure: High Solids paints generally have longer flash off prior to heat cure, longer dry times, shorter pot life, and shorter shelf life.
Contamination Sensitivity: High Solids paints are sensitive to contamination. Most problems can be avoided by careful pre-paint cleaning and by filtering the mixed paint prior to spray.
Mixing: Exact mix ratio required.
Base, catalyst, and thinner (or flow control) components each have additives that must be in correct proportion for proper film properties.
Do not mix Base and Thinner before adding Catalyst. Doing so may cause pigment float.
Semi-gloss and Flats: Semi-gloss and flat colors may have different mix ratios, pot life, and dry times than gloss colors.
Can Labeling: Some products are qualified to multiple specifications. Acceptable paint lists the specification called out by your drawing and may list others.
BMS 10-11 Type II: Low VOC Semi Gloss and Flats: Both catalyst and base need to be agitated before mixing. Long flash off time prior to heat cure required to achieve low gloss level.
BMS 10-60 and BMS 10-72 topcoats: Accelerated cure thinners are available for several high Solids products on the QPL.
BMS 10-86: See your drawing and the usage requirements in BAC 5710 for choosing the correct BMS 10-86 type for touch up, decorative and non decorative use.
BMS 10-79 Primer: Technically, the new BMS 10-79 primer is not a true high Solids paint. Rather, it is a low-VOC primer, by virtue of the acetone (VOC-exempt) content. As such, the paint characteristics resemble those of a typical, lower-Solids paint system. However, care must still be taken to ensure a clean surface prior to painting.