Available in granular or smooth finish, TRI-BUILT self-adhering underlayments from Allied Building Products Corp. are easily applied in all climates. The smooth finish version has sand fully embedded in the surface for traction. The asphalt composition of the granular style’s top layer is designed to reduce loose granules. The products feature a siliconized split-release film for easy application. For more information, call 800-516-1486 or visit www.alliedbuilding.com.