LP Building Products treated laminated strand lumber (LSL) with zinc borate to protect against mold and insects. The material can be used in multistory wood construction. SolidGuard LSL can be used as sill plates, columns, rim board, and studs in above-ground applications that are shielded from the elements. Field-cut ends don’t require treatment. LP Building Products, 877.523.7192,lpcorp.com