Incline Need for Rolled Roof
https://mike-wiki.win/index.php/Just_how_to_Spot_a_Rolled_Roofing_Detailed_Overview
This is the sacrifice you're going to need to make for it being cheap, quick as well as easy to install. Rolled roof is a little similar to shingle roofing in that it's oil-based and also is an asphalt product.