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Single Ply Roofing Systems
Single ply roofing systems are acclaimed time and again for
being the most effective solution when it comes to commercial
usage. Custom-fabricated and light weight, single ply roofing
systems have established themselves as a preference for building
owners as they promise little to no maintenance costs.
Also known as 1-ply roofs or membrane roofs, these non-asphalt
based systems are made up of flexible membranes that are uniformly
laid across the length of roof decks. They are then glued down or
fastened together mechanically. A covering is used on top which is
usually made up of synthetic polymer and is intended to provide
superior durability and protection against weather. They are
effective for commercial usage since they are walkable and it is
safer to install them.
Materials used with Single Ply Roofs
Single ply roofing systems can be categorized into two groups:
Thermosets and Thermoplastics. Foam insulation board can be added
at various thickness's under the system to create proper drainage
and build thermal efficiency. Cost and ease of application
have made Thermoplastics the most common system in North Texas.
Thermosets are simply defined as materials that cannot be welded
with hot air. They are usually made up of rubber polymers and the
one most commonly used for these systems is Ethylene Propylene
Diene Monomer or EPDM for short. When used in Single ply roofing
systems, these membranes render superior performance when exposed
to varying temperatures or ultraviolet rays. They are also known to
have long-term wearability. If there is a large area that has to be
covered, using Thermosets can be a realistic approach as it not
only keeps the weight of the roof low, the number of seams used on
the roof can be reduced as well.
Contrary to thermosets, thermoplastics are membranes that are
welded with hot-air so as to achieve cohesive laps. TPO and PVC are
among the most commonly used membranes used in thermoplastic
membranes. Their use is recommended whenever dimensional stability
and strength are desired. These membranes are characteristically
light-colored, giving them excellent reflectivity which leads to
significant energy savings. This type of membrane simplifies
maintenance and repairs as well.
Single ply roofing systems are typically mechanically fastened.
Fastening method is an important consideration as it is highly
dependent on the type of roof deck of the building, for example
metal, wood or concrete. In some instances a fully adhered or
chemically bonded application is better suited. It is important to
ensure a sufficient number of fasteners or chemical bonding agent
is used so as to avoid any problems from arising in the future.