Specifications include, but are not limited to: Remove and dispose of existing wood shake roof. 2) Install new cedar shake roof system. 3) Provide ventilation underlayment per specifications. 4) Install metal flashing per specifications in roof valleys, at walls and chimneys. 5) Adhere to fastener specifications. 6) Maintain a consistent work schedule from project start to finish, with new roofing installed immediately after removal of existing.