There are generally two different classes of roofing options, one for the low sloping flat roof, and another for the steep sloping pitched roofs. The type of roof system you choose will depend on the pitch of your roof. A roof with a slope greater than 3:12 or 14 degrees is considered a steep sloped roof. A low pitched roof is one equal to or lower than the 3:12 ratio. Listed below are the types of roofing options and roofing systems.
Steep Roofs – 5 Types of Roofs
Concrete tile and Clay tile – Concrete tiles are created by mixing sand, water, and cement in different proportions. These tiles are extruded in molds under high pressure to increase strength. Clay tile roofs are very durable and last for many years. Some homeowners even get as much as 50 years or more from clay and concrete tile roofing systems.
Asphalt Shingles – Created from a base material they are comprised from either glass-fiber or organic mat. This gives asphalt shingles their strength and water-resistant attributes.
Metal Roofing – Having three main categories of metal roofing which are, metal shingles/panels, structural metal panels, and architectural metal panels, architectural metal panels are usually the preferred option in steep sloped roofs. Given that the architectural metal panels aren’t generally made to have water tight seals, they are only recommended for these steep slope applications where the water will shed quickly.
Wood Shake Roofs – These shingles and shakes are manufactured from pine, cypress, redwood, cedar and redwood trees. Wood shake roofs are shaped so that the butt is thicker than the tip of each the tiles to encourage quicker water drainage. A split and resawn shake is first split from the log and then sawn on the back. There are also taper sawn shakes which are sawn on both sides. Wood shingles are also sawn on both sides and have a natural taper to them so they are uniform.
Slate Roofing – Being a naturally occurring material it’s naturally nonabsorbent, dense, and durable. This type of material has two properties, fracture and cleave. It’s the cleave property that allows manufacturers to split it in one direction and create uniform tiles to use as a roofing system. Also being a naturally occurring material you will find that the characteristics of this material can vary depending on which quarry they are taken from. Some will have a smooth or rough surface naturally.
Low and Flat Roofs – Types of Roofs
BUR or Built-up roof membranes – This type of roof has been used for better than 100 years and is commonly referred to as your “tar and gravel” roofing system. These are usually constructed by using alternating layers of reinforcing fabrics and bitumen that cure to create a finished membrane. You might hear people talk about the amount of piles their roof has, or a roofing contractor saying it. A 4 pile roof means that it’s a four ply layer of this type of roofing system.
Metal Panel for Low Slope Roofs – The only option in this category is the structural metal panel. This is due to the fact that metal panel roofs made for low slope applications have a seam system that helps keep water out. These must be used in low slope applications, but can also be used for steep sloped roofs. They have excellent hydrostatic properties that create a water barrier.
Polymer-modified sheets – This is a material much like your BUR roofing systems with the addition of a polymer modified membrane. These are made of reinforcing fabrics and set into rolls so they can be transported to the job site. They can either be applied with a hot mopping of asphalt, a cold adhesive, or even some varieties are applied with a heat-weld and torch.
Single-Ply Membranes – Having two main types, Thermoplastic and Thermoset variants, they are factory manufactured sheet membranes. The Thermoplastic type can be adjusted and changed with the application of heat, while the Thermoset sets permanently after the application of heat.
Polyurethane Foam (SPF) Roofing – This type of roofing is made by mixing and spraying a binary liquid that forms the base of this adherent roofing solution. Having the flexibility of being a sprayed and layers system it can be applied in a varied thickness to provide a natural slope to your roof and improve drainage.
If you’re not sure they pitch or slope of your roof, need a new roofing system for a new built house, or you need repair on an existing roof get in touch with the experts who to right the right way, Right Way Roofing Inc. You can reach them at either 480-232-5458 or 602-299-8851.