COMMERCIAL ROOFING

Commercial roofing requires more skill and properties to construct a roof that is durable and up to code. The installation process differs from residential in that it takes much longer and requires more people. The roofer installing a commercial roof must be knowledgeable about obstacles such as external piping, smoke stacks and airflow systems. The process of repairing a commercial roof is more complex than a residential one. A leak in a commercial roof may result in the entire roof needing replacement.

Design Elements of Commercial Roofing

The design of commercial roofs are considerably larger and flatter than residential roofs. In some construction designs a commercial roof will have a slight slope. A commercial roof with a flat surface will require more maintenance and will require larger sections to be repaired.

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TYPES OF COMMERCIAL ROOFING MATERIALS

EPDM

Ethylene Propylene Diene Monomer, Also know as rubber roofing, EPDM is one of the most inexpensive materials used for commercial roofing. It is easy to install, lightweight and durable.

PVC

Polyvinyl Chloride
This lightweight product is composed of two layers of PVC material and polyester that act as a reinforcement within the layers. PVC is resistant to many elements including fire, wind and moisture. However, PVC is more expensive and is prone to shrink in size, which can cause leaks in the corners of the roof.

Asphalt Rolls

Made from the same material as roof shingles, asphalt rolls are usually applied to roofs with a low slope. These rolls are inexpensive and easy to install.

TPO

Thermoplastic Polyolefin
This material is similar to EPDM in that it is inexpensive and lightweight. The main difference between the two is the application. While adhesive is used to apply EPDM, TPO roofs are secured with heat-welded seams. The main disadvantage of TPO is that it is not fire resistant.

SPF

Spray Polyurethane Foam
SPF is a form of plastic that turns from a liquid to a protective foam in just a matter of seconds. It’s energy-efficient, lightweight and provides a watertight and airtight seal.

BUR

Built-Up Roof
Also known as tar and gravel roof, BURs are well known and found on most commercial buildings. BURs consist of layers of asphalt sheets, hot tar and roofing fabric that are applied to the roof with heat. The last layer helps protect the other layers from the elements, UV rays and hail.