Online Search Queries – Commercial Roofing

Jim and John answer some of the internets most asked questions about Commercial Roofing



What is Commercial Roofing?

Simply put, Commercial Roofing is roofing for generally any structure that is not considered residential.  This could be businesses, churches, schools, or warehouses.

What type of Commercial Roof do I have?

Tar and Gravel

This type of roofing material is also sometimes referred to as “Built Up Roofing” due to its many layers.  Roofing Membranes are sandwiched with tar material, then topped with gravel or crushed stone.



This is a black rubber material, generally pretty smooth in texture and is applied with a glue material.  This material is less common in southern states as it tends to absorb more heat.

Modified Bitumen

This is a granulated material, similar to a shingle, however, it is more rubberized than a standard asphalt shingle.  This material is torched down with high heat, which melts the material to form bonds between sheets and the roof.


These two materials are almost indistinguishable in photographs.  TPO stands for Thermoplastic Polyolefin, and you can read more about this material below  PVC stands for polyvinyl chloride and is very similar to TPO material, however it is slightly more susceptible to sun damage, but less susceptible to chemical damage.  For this reason, many restaurants will use a PVC material as it holds up well against grease and other chemicals.

Metal (Standing Seam or R-Panel)

Metal roofs are very common in commercial construction, and the two most common types are

Standing Seam with concealed fasteners

and Mechanically Fastened Roof with exposed fasteners.



Why are Commercial Roofs Flat?

Commercial Roofs are flat for a few reasons, but the main reason is simply cost.  In order to have a standard pitched roof, the slope of the roof would be so steep and so high, that the cost of the material would be far greater than having a flat roof.  They also allow businesses to store their A/C units on top of their buildings, freeing up space on the ground and making the building more aesthetically pleasing.


What is TPO?

As stated above, TPO stands for Thermoplastic Polyolefin.  TPO is a sheet material that essentially looks like a big rubber blanket.  The TPO Material is rolled out across your roof and heat welded together at their seams to form one imperforate sheet across your roof.


What is the best Commercial Roofing Material?

The most popular and the most spec’d by engineers and architects is currently the TPO Material.  It is cost-effective, durable, reflects heat and meets current energy star ratings.


Can I replace my Commercial Roof without interrupting my business?

This is very commonly asked from any of our clients and simply put, yes.  We strive to care for each of our clients as we would like to be treated.  Maintaining your business is important to us, and we want to ensure that this process is smooth and easy for you.  We will rope off a section for staging and safety so that your customers will be safe from any work happening at your site.