Roof Types
Single Ply
Single Ply roofing materials are generally referred to as elastomeric (EPDM) or thermoplastic systems.
Thermoplastic (TPO and PVC) materials are typically reinforced plastic polymers readily formed or changed in shape upon the application of heat. Seams are welded together using hot air equipment.
Thermoset (EPDM) materials, are made up of synthetic rubber compounds which may or may not be reinforced and do not change shape once heat has been applied. Tapes or Adhesives are used to seam thermoset materials.
TPO
TPO (Thermoplastic Polyolefin)
Roof sheets are reinforced and contain UV stabilizers, fillers, pigments and flame retarders.
TPO membranes are highly reflective with heat-welded seams and may also use tapes to adhere accessories.
PVC
PVC (Polyvinyl Chloride)
PVC is thermoplastic in nature and resists weathering.
PVC is popular for its dependability, heat-welded seams, high reflectivity, superior physical attributes and resistance to water, chemicals, grease, fire and punctures.
EPDM
EPDM (Ethylene Propylene Diene Monomer)
EPDM is a synthetic rubber derived from oil and natural gas (ethylene propylene and is a popular choice for the cost and its ability to withstand UV and ultraviolet rays.
Modified Bitumen
Modified Bitumen Roofing Systems are created when a polymer is added to asphalt to extend temperature limits and increase the pliability of asphalt.
Modified Bitumen Systems can be installed with the common torch method, asphalts, or cold adhesives.
Built-Up
Built-up roofing is one of the oldest and most durable systems available.
Comprised of multiple layers that provide extra protection and perform well in extreme weather conditions.
Metal Roof System
Longevity, durability and heat resistance are key benefits of a metal roofing system
Typically consisting of concealed or exposed fastener systems that require concealed metal clips that attach to the structure, metal roof systems can be used for steep or low slope roofs.
Steep Slope Roofing
Steep-slope roofing is typically considered to be any roof system which has a slope equal to or greater than 3:12
The most common steep slope roofing types are asphalt shingles, concrete and clay tiles—wood shakes can also for steep sloped commercial roofing