RustSeal Satin Black — and all matte sheens of RustSeal — are heavily pigmented. It is critically important to get all of the matting agents mixed back into suspension using a mechanical mixer attached to a variable speed drill (such as the KBS Hurricane Paint Mixer), or at minimum a paint stir stick. Effective mixing includes repeatedly touching the bottom of the can and lifting upward to fully disperse any settled pigments and matting agents.
CRITICAL: If RustSeal is not mixed well before each application — and occasionally during application — the finish can turn out glossier than desired. Do not skip this step. |
Be sure to apply RustSeal in thin coats only to achieve a proper matte finish. Medium or heavy coats will cause the finish to appear glossier than desired.
If a flatter finish is desired, you can reduce RustSeal by 20% with KBS #1 Thinner or Xylene to help the matting agents distribute more evenly.
Don't judge the sheen too soon. When RustSeal Satin Black is first applied, it can appear glossier than expected. This is normal — RustSeal Satin Black will matte down as it cures. Always wait the full 24 hours before evaluating the final sheen. |
Frequently Asked Questions
Why does RustSeal Satin Black look glossy right after I apply it? This is completely normal. The matting agents in RustSeal Satin Black need time to fully activate as the coating cures. The finish will matte down on its own — always wait the full 24 hours before evaluating the final sheen. |
How important is mixing RustSeal Satin Black before use? Mixing is critical. The matting agents settle to the bottom of the can during storage. If the product is not thoroughly mixed before each application — and occasionally during — the finish will appear glossier than intended. Use a mechanical mixer such as the KBS Hurricane Paint Mixer attached to a variable speed drill. Repeatedly touch the bottom of the can and lift upward to fully re-suspend all settled material. |
Can I apply RustSeal Satin Black in thicker coats to save time? No. Medium or heavy coats cause RustSeal to appear glossier than desired and can compromise the finish. Always apply in thin, covering coats only. Multiple thin coats produce the best matte result and deliver the full protective performance the product is designed for. |
How do I get an even flatter, more matte finish with RustSeal? Reduce RustSeal by 20% with KBS #1 Thinner or Xylene before application. This helps the matting agents distribute more evenly throughout the coating and produces a flatter overall sheen. Ensure the product is still thoroughly mixed even when reduced. |
How long should I wait before judging the final sheen of RustSeal Satin Black? Always wait the full 24 hours after application. The coating appears glossier immediately after it is applied, but it matts down as it fully cures. Evaluating the finish before 24 hours have passed will give you a misleading read on the final result. |
Ready to get a rock-hard, matte rust protection finish? Shop RustSeal or review the full Application Directions before you begin. Have questions about your specific project? Our team is ready to help. |