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Can DiamondFinish Clear be used over RustSeal?

⚠ Important: UV Delamination Risk

We do not recommend applying DiamondFinish Clear over RustSeal. While DiamondFinish Clear is fully UV stable itself, it does not block UV rays from passing through to the RustSeal beneath it. Over time, this UV exposure can cause DiamondFinish Clear to delaminate from RustSeal in areas exposed to prolonged sunlight.

If your RustSeal will be exposed to sunlight, we always recommend finishing it with a solid color, UV stable topcoat rather than a clear. The topcoat provides both UV protection for the RustSeal and long-lasting color retention.

Our recommended topcoats over RustSeal are BlackTop and KBS MAXX — both are UV stable, highly durable, and engineered to bond over RustSeal for a finished, professional result.

Ready to get the right topcoat?

Shop UV stable topcoats designed to work over RustSeal, or review the DiamondFinish Clear directions for all compatible applications.

Shop BlackTop Shop KBS MAXX DiamondFinish Clear Directions