Evolute 8 has natural tones with extreme durability. With all visible surfaces coated, Siparila Topcoat® Evolute 8 is a high-quality wood siding that has long-term durability to preserve its beautiful finish. Our wood siding is shipped ready to install and does not require further treatment, which makes it the ideal material for both new construction and renovation. Siparila Topcoat® wood siding profiles are also designed to hide visible fasteners and are end-matched. The result is a flawless, nail-free finish.