Roofing Products
Cool Roof Systems
TPO (Thermoplastic Polyolefin Membrane)
TPO membrane is compromised of three layers - a TPO polymer base, a
strong polyester-reinforced fabric center (scrim) and a tough thermoplastic
polyolefin compounded top ply. Because the top ply is the most vital membrane
component for long-term weathering characteristics. The smooth surface resists
dirt pick-up and biological growth compared to other thermoplastic membranes. TPO BENEFITS
- TPO membranes carry the ENERGY STAR rating having exceeded the stringent
program guidelines based upon solar reflectance and heat emittance.
ENERGY STAR compliant TPO membranes with their high-reflectivity ratings
help reduce the amount of energy required to maintain cool building environments
by approximately 15% per year. Less energy consumed results in less
pollutants generated back into the atmosphere and directly contributes to a
cleaner and cooler environment.
Why Install A Cool Roof System?
- Reduce Energy Costs
- Lessen Global Warming
- Alleviate Smog & Suburban Heat Islands
- Act in Accordance
with Codes & Green Building Programs
- Generate Value to your Building with Energy
Efficiency
-
PVC (Polyvinyl chloride)
PVC roofing membrane shares
many of the same characteristics as TPO. The most notable difference between the
two products is that PVC requires more seams than TPO. The PVC membranes
typically come in 6’ ft widths whereas the TPO membranes come in 10’ ft width.
This translates into higher cost for the consumer considering the added labor
costs of heat welding and checking the seams of both systems.
Other Single Ply Roof Membranes
EPDM (Ethylene
Propylene Diene Monomer membrane)
EPDM membranes are
available in reinforced and non-reinforced. The reinforced membranes are
available in 45 and 60-mil thickness. They are manufactured with a polyester
reinforcement completely encapsulated between two piles of EPDM. Specially
developed for mechanically-attached and fully-adhered Systems, the membrane
offers superior fatigue resistance.
EPDM membranes have been field tested for decades with long-term exposure to UV
and ozone, resulting in little property change. EPDM Systems are economical to
install, offer easy maintenance for owners and achieve Factory Mutual (FM)
approvals and (UL) Underwriter's Laboratories fire ratings.
Asphalt Based Membranes
-
SBS Modified membranes
(self-adhered and fully adhered)
-
APP Modified
membranes, granulated or smooth surface (torch down)
-
Emulsion coatings
-
BUR (with gravel or cap sheet)
Asphalt roofs are also sustainable by restoring the
lifecycle by making repairs and recoating with compatible products. The process
can be repeated as necessary at a significant cost savings with very little
impact on the environment.
Asphalt BUR is the most common type
of flat roof at this time. It is made up of multiple layers of reinforcing plies
and asphalt forming a redundancy of water proofing layers. The reflectivity of
built up roofs depend on the surfacing material used. Gravel is the most common
and they are referred to as asphalt and gravel roofs. Though this type of
roofing system is cost effective, the degradation of asphalt is a growing
concern. UV-rays oxidize the surface of the asphalt and produces a chalk-like
residue. As plasticizers leach out of the asphalt, asphalt built up roofs
becomes brittle. Cracking and alligatoring inevitably follows, allowing water to
penetrate the system causing blisters, cracks and leaks. Compared to other
systems, installation of asphalt roofs is energy-intensive (hot processes
typically use LP gas as the heat source), and contributes to atmospheric air
pollution (toxic, and green-house gases are lost from the asphalt during
installation).
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