SMP paint systems are developed using a blend of polyester and silicone agents. Silicone acts to improve the gloss retention and weather resistance of the polyester coating. As a rule, the higher the silicone content, the better the performance of the paint.

SMP pre-painted steel has been used in the construction industry for decades and is preferred by many building owners due to the relative durability of the coating and the budget-friendly cost as compared to other more expensive paint systems. SMP paint systems typically come with a standard 40-year limited warranty but the length and what is covered may vary by paint manufacturer.

SMP pre-painted steel is best suited for applications such as residential roofing, agricultural buildings, storage sheds, and other applications where color selection, coating performance, and durability are important to the overall project.