We have plans to build a new house and the architect has designed a covered porch directly over the garage. Our builder is perplexed about the proper matieral to use under the decking for the "roof" of the garage. We have a few feet to get a subtle grade. Seems like a rubber roof would do the trick and since it will be covered, it will not be subject to the UV problems that plague most rubber roofs. We are concerned about the proper material because if repairs are necessary, we may have to rip up the decking to get at it. Does anyone know what material would be best for this situation?

epdm