Roof Preparation

In areas where local building code requirements exceed the following recommendations, the local code will govern.  Install underlayment, 30 lb. felt paper in accordance with manufacturers recommendation.  In areas requiring an ice barrier, two layers of underlayment adhered together or a self-adhering polymer modified bitumen sheet should be used in lieu of normal underlayment and extend from the cave's edge to a point at least 24 inches inside the exterior wall line.