Perma-Main Philadelphia. The Perma-Main Top Gun is sweeping Philadelphia and the entire Northeast! Have you been tempted by main lining, but the cost and amount of equipment needed was just too much? Have you wondered how you would wet out that much main line bag without a wet out facility? Perma-Liner has developed the Perma-Main system that is now not only spreading in Philadelphia, but all of North America! The Perma-Main system requires minimal equipment and the material is delivered to you already wet-out. If you are looking to become a Perma-Main installer in the Philadelphia area, please call us today!