These are made of multiple layers, generally some form of asphalt to provide waterproofing performance.

SBS (styrene-butadiene-styrene) which is a modified bitumen. Bitumen is a petroleum-based liquid also used to hold sand and aggregate together to make asphalt
PMMA (polymethyl-methacrylate) a liquid applied in multiple coats

Although Single-ply and multi-ply materials are used primarily for commercial buildings, they are excellent for residential applications as well.

The following testimonials are from some of our many satisfied clients.

I definitely highly recommend Altex Roofing Services and Lex and his guys over there they do a great job! I'll recommend them to anybody and it's not gonna be very long before I have to put a new roof on and you can bet I'll be calling Altex.
Mike Francois
Altex Roofing was out on time, the work was clean, no mess, and this is the first time in five years I've had no leak in the roof! They succeeded where others have failed - AND - the owner has been out to the home after completion to check on me. Their pricing was also competitive, I would highly recommend Altex.
Jason Chide
I definitely highly recommend Altex Roofing Services and Lex and his guys over there they do a great job! I'll recommend them to anybody and it's not gonna be very long before I have to put a new roof on and you can bet I'll be calling Altex.
Mike Francois

Andy Chiodo is Very Happy with His Altex Roofing Experience

multi ply Roofing