Does the use of an ice and water shield type membrane preclude flashing vallies, dormers, etc.? It seems to me that these membranes should be treated as a 'super' felt, i.e., you would still flash if using 30#, so one would flash with the membranes.
A neighbor just had a new roof installed with some use of an ice and water shield membrane. Where ever the membrane was used, absolutely no flashing was used. The folks doing our roof will be using both. Is one a preferred method?
Obie
A neighbor just had a new roof installed with some use of an ice and water shield membrane. Where ever the membrane was used, absolutely no flashing was used. The folks doing our roof will be using both. Is one a preferred method?
Obie