Style Crest. Manufactured using injection molding, Cedar Cove 8-foot roughsawn siding offers more detail than thermoformed panels, the maker says. The process recreates the intricate ridges and sharp end cut found in roughsawn wood shingles. Single-course construction means panel overlaps are more staggered than with double- or triple-course designs. It also means less waste and more productivity for contractors. The maker says the 8-foot panels install faster than other injection-molded panels, which are generally shorter in length.