Huber Engineered Woods. ZIP System roof and wall sheathing feature built-in protective barriers. Along with ZIP SystemTape to seal the seams, the all-in-one panels eliminate the need for housewrap or felt, the company says, making the installation faster and easier than traditional materials. A stiffer, full-depth ½-inch roof sheathing board, the ZIP System roof sheathing panel requires no H clips as long as rafters are spaced at 24 inches or less. 800.933.9220. www.zipsystem.com.