Commercial roofing is serious business because these roofs are designed to protect the building
envelope and the contents inside it. Whether a commercial building contains
industrial equipment, millions of dollars in retail goods, records, irreplaceable
books, or expensive computer equipment, commercial property managers know
how important it is to maintain the integrity of the commercial roofing
system, especially in Oklahoma where commercial roofs take a pounding
from Mother Nature.
Commercial roofing is one of the most demanding areas of expertise in the
roofing industry, and there are hundreds of unique roofing systems and
variations of application. Much like an old classic car, the history of
a building's roof can certainly influence its performance.
When it comes to commercial roofs, there are three main types of roofing
systems: single-ply roofing, built-up roofing, and modified bitumen roofing.
Single-Ply Roofing: This is made of a variety of plastics and rubbers such as ethylene propylene
diene monomer (EPDM), thermoplastic olefin/polyolefin (TPO), and polyvinyl
chloride (PVC). These are single-layer applications of roofing sheets
bonded along the seams with a heat or adhesive. Single-ply systems are
ideal for areas that are exposed to direct sunlight.
Built-Up: Built-up roofing is made of multiple layers of felt and molten asphalt,
and often covered with roll-roofing cap-sheet. Built-up systems offer
layers of reinforcements because of the way the layers are sandwiched together.
Modified Bitumen: This type is comprised of a felt based sheet that is covered with a modified
bitumen cap sheet, which is made of reinforcement coated asphalt combined
with plastic or rubber to strengthen the bitumen and make it tear-resistant.
The modified bitumen is covered with an aluminum-rich paint or granules
for enhanced sun protection.
Severe Wind Damage
roofing systems, the most severe wind damage occurs at the windward corners and edges
where the wind forces impact the roof the most. In these susceptible areas,
building codes require the most uplift resistance capacity. In many cases,
roof fastener patterns on tall buildings can require 50% more fasteners
along the edges and even 100% more fasteners along the roofing corners
than in the field of the roof.
After a heavy storm, it's important to examine the roofing system at
roof penetrations, looking closely for wrinkles or tears, or other evidence
of roof membrane displacement. If roofing failure has occurred at lower
wind speeds, it will be necessary to examine the roof system attachment
at those weakened areas. In many cases, a premature failure is the result
of inadequate fasteners, inadequate adhesion, or a combination of the two.
Tulsa roofers with over 30 years of experience in the roofing industry, we know that
the layers of roofing, their attachments and their performance or lack
thereof all tell a story, and after a heavy storm, we know how to read it.
Contact T-Town Roofers today for all of your commercial or
residential roofing needs!