Polymer Membranes- These membranes are made of synthetic polymer with a single ply membrane. They make the roof of a commercial building absolutely waterproof. Moreover they are quite easy to cut which makes them have a perfect shape for any kind of roofs. Also, some membranes offer good insulation which reduces costs of heating and air conditioning of the place.
Asphalt- While roofing with the asphalt, roofers need to provide the base of the roof with polyester or fiberglass. The layer of asphalt, mixed with gravel and other material, is applied on the top. It makes the roof quite strong and weather proof. These roofs also suppose to be water and fire proof.
Shingles- Just like asphalt, these shingles are also applied over the fiberglass or wood fiber. The shingles are to be overlapped one after the other. Usually people who experience more rain or snowfall go for this type of roofing. It's slopping pattern doesn't let much of the water and snow on the roof.
Slate- Slate supposes to be one of the longest lasting material available for the purpose. It's resistant to algal and fungal growth and hence requires less maintenance. Besides it gives a very beautiful look to the building. Slates come in wide array of options differing from each other in thickness, size and colors so that you can give a personalized look and suitable durability to the roof of the building.
Metal- As one can easily understand, metal is used in roofing only for splendid projects. Besides being very good looking, metal option is also environment-friendly and recyclable. This material comes in various colors so that you can have a good match for the frontal of the building.
A number of roofing contractors are there in Phoenix who not just provide such material but also suggest which type of material will be best according to your requirements. They provide all required services related to roof installation and repair as well. But among so many service providers, you need to make your selection very wisely keeping a number of things like experience, expertise, guarantees offered and price quoted.