Weak roofing systems will fail in extreme weather; hailstones will pierce it, rainwater will get beneath it, strong winds will lift it, and
extreme heat will expand and shift it.
The performance of a roof is linked to its design.
From the manufacturing of the products to the system installation, roof performance depends on the
quality of its components.
Before a Polyglass modified bitumen membrane
is manufactured, the product goes through rigorous testing to ensure it can withstand virtually every
weather condition. Polyglass’ modified bitumen
membranes are either reinforced with fiberglass to
provide dimensional stability or polyester to improve
puncture resistance. Membranes that feature patent-pending CURE Technology® incorporate ceramic
microspheres, proprietary resins and UV stabilizers to
the surface to enhance reflectivity, granule adhesion
and stain resistance.
In the event of a severe hailstorm, which can drop
grapefruit size hailstones, a Polyglass modified bitumen roof system with CURE Technology can manage
the impact of the hail because it is resilient and durable. Building owners and facility managers cannot
afford to install any roof system besides a modified
bitumen multi-ply roof system.
CONSIDER THE COST OF A
COMPROMISED ROOF SYSTEM
The cost of a failed roofing system during a severe
weather event can be catastrophic. When calculating
their roofing risk, building owners and facility manag-
ers should not only look at the cost of roof repairs
and replacement, but they should also keep in mind
the cost associated with the disruption of business
operations and potential loss of inventory. It’s criti-
cal to consider the big picture and long view when
selecting a roof system. Some of the most common
types of commercial roof systems are:
Single-ply membranes are factory-manufactured
membranes. They generally are categorized as either
thermoset (EDPM) or thermoplastic (TPO or PVC).
Single-ply membranes are produced using one of
three manufacturing processes: calendering, extruding or spread coating. The membranes may contain
reinforcement layers. Common reinforcements for
single-ply membranes include polyester fabrics or
scrims, glass fiber, or a felt or fleece backing.
Built-up Roof (BUR) are commonly referred to as
“tar and gravel” roofs and asphalt BUR is the most
common type. BUR systems generally are composed of alternating layers of bitumen and reinforcing
fabrics that create a finished membrane. It is made
up of multiple layers of reinforcing plies and asphalt
forming a redundancy of waterproofing layers.
Modified Bitumen Membranes (Mod Bit) are
composed of reinforcing fabrics that serve as
carriers for the hot polymer-modified bitumen as
it is manufactured into a roll material. Mod Bit
roof systems are composed of multiple layers
and are thicker (up to 300 mils) than single-ply
membranes (up to 90 mils). Mod Bit roof systems
typically are installed as a multi-ply system, a
minimum of two waterproof sheets.
Polyfresko® G Cap Sheet
This 168 mils cap sheet is manufactured with Cure Technology, a thin film
technology that makes membranes more durable. Polyfresko G is the first line of
defense against punctures, heat, ultraviolet light and foot traffic.
Elastoflex® SA V Base Sheet
Manufactured using patented ADESO® dual-compound self-adhesive technology, Elastoflex SA
V membrane provides high performance reinforced
fiberglass mat to ensure excellent dimensional
stability. The base ply thickness is 80 mils.
Modified Bitumen Roof System Installed Over Built-Up Roof
Existing Three-Ply Built-Up Roof