Building Roofing – Industrial and Commercial Roof Systems


Welcome to Building Roofing

Builiding Roofing covers aspects of a building’s roofing system.

Type of Buildings



Commercial property includes

-Retail (shopping centers, retail stores), restaurants, business office, apartment complex, malls, hotels and motels


Many sources consider commercial and industrial properties as being the same. The difference in the two comes down basically to the industry the company is in. The majority of industrial companies produce some type of good within the economy. These building’s are usually not built to attract consumers, and can be tremendous in size. The majority of industrial buildings have low-sloped flat roof systems.

Industrial buildings commonly have roofs made of metal, aluminum, and steel. Some consist of roofing membrane such as PVC, TPO, and EPDM. And some are made up of roofs that are built up, such as modified bitumen.

-Plants, factories, warehouses, and distribution centers



-Religious Buildings

Most church building’s roof consists of shingles and/or metal steep slope and/or low slope. A combination of variations, consisting of different roof applications are commonly found, including sections with single-ply membranes.


On hospitals EPDM is one of the most common found membrane, but it is quickly being replaced by TPO roofing membranes. Many roofing professional believe that TPO has many benefits, which traditional EPDM lacks. Built up roofs using tar and gravel are also commonly found on hospitals. 


The primary purpose of maintenance and repairs for roof systems is to eliminate leaks and problems. Industrial and commercial roofing repairs and maintenance will extend a roof’s overall service life. Having repairs and regular maintenance enhance the original investment made in a commercial roof system. Depending upon the age and condition of an existing roof system, the general level of repairs may be divided into three categories:

  1. Patching Repairs
  2. General Repairs
  3. Major Repairs and Maintenance


Spot patching simply involves the installation of patches to repair isolated deficiend or degraded locations in the membrane or flashing.


General repairs are more comprehensive than spot patching. They may involve repair of numerous deficiencies throughout the roof system.


Major repairs and maintenance can be viewed as a repair regime designed in conjunjuction with various preventive maintenance procedures.


Safety First – Man Killed by Falling Tape Measure

A New Jersey man delivering sheet rock to a construction site was killed Monday when a tape measure fell fifty stories and hit him on the head.
tape measure fell off roof
The 1-pound tape measure became dislodged from the belt of a worker on the 50th floor and struck construction equipment about 10 to 15 feet from the ground. It then ricocheted and struck a 58 year old man in the head. The man was not wearing his hard hat at the time, and unfortunately lost his life shortly after the accident occurred.

Being on a construction site can be extremely dangerous, and you never know when some freak accident can occur and potentially cause severe damage or even result in death. Please take extra precautions next time you are working on or even near a construction site.

Potential Vulnerable Areas on Your Roof

Insulation (under the membrane) – Can lead to leaks or even premature failure of your entire roofing system. When the roof insulation shrinks, curls, or cups it results in membrane attachment problems.

Flexible Wall Flashings – Theses flashings can result in leaks if they slide off the wall.

Penetrations – Penetrations usually occur from lack of maintenance (and in many cases manufacturers will void warranty if the roof has not been properly maintained).

Metal Flashings – Flashings can leak at the joint, or because of rust. If the flashings were installed improperly they can also cause leaks.

Blisters – blisters in the membrane form due to moisture vapor within the roofing application. The blisters can open due to traffic, and result in leaks.

Metal Roof Panels

Metal roof panels are typically constructed out of the following material.


An expensive metal that is malleable. Typically used for high end residential roofs, for copings, gutters, and flashings.


A versatile metal that is typically used for flashings.


A lightweight, inexpensive metal that expands and contracts twice as much as galvanized metal.

Stainless Steel

A strong corrosion resistant metal that is usually only found on roofs that deal with harsh industrial conditions. Stainless steel is an expensive option, but for some the only effective option.

Galvanized Steel

The most common metal used for commercial metal roofing. Features a sacrificial coating of zinc to protect it from the elements.

Wet Materials

Wet material should be removed from a job site. You never want to use wet material when working with a roofing system. Wet materials in roofing systems can seriously affect its performance. Wet materials can also promote the growth of mold.

When insulation gets wet it even loses its R-value. Wet insulation should never be used. Some components like metal can be dried out without causing permanent damage to the material. Just make sure the metal are not rusted or corroded before installing them.