Visitors will learn how Duro-Last’s prefabrication approach makes our roofing system extremely durable, and easy to install, without disruption to daily building operations. The Duro-Last roofing system is also leak-proof, resistant to high winds, and virtually maintenance-free.
Drew Ballensky will be on hand to address issues questions regarding cool roofing systems and discuss how a Duro-Last Cool Zone roof can help with LEED ratings. The Cool Zone system is both highly reflective and highly emissive, transferring less heat into the building compared to a dark colored “non-cool roof.”
Steve Kowaleski will also be at the booth ready to showcase a variety of EXCEPTIONAL® Metals products. EXCEPTIONAL Metals, a division of Duro-Last Roofing, manufactures high-quality metal components products designed to finish any roofing project.
Are you attending IRE? Send us your comments about the show and we many post them!
Q: Haven’t California and most of Europe banned phthalates – and important PVC additive – from use in children’s toys and other articles? Isn’t this a sure sign that PVC isn’t safe?
A: The European and California bans on phthalates in children’s toys and related products are the unfortunate result of a sustained, 10-year scare campaign by activist groups dedicated to the elimination of all plastics and industrial chemicals. The basis of their argument lately is a small number of very recent studies that not only clash with more than 40 years of respected global academic and governmental science, but have offered no tangible proof that phthalates pose a danger to people of any age from any application. Phthalates have established a very strong safety profile over the 50 years in which they have been in general use. There is no reliable evidence that any phthalate, when used as intended, has ever caused a health problem for a human. Environmental research conducted by industry and others has led to scientific consensus on three key points. First, phthalates are not persistent; they are quickly biodegraded in water and soil. Second, bioaccumulation and biomagnifications are also not concerns; living organisms do not build up levels of phthalates over time, but break them down and eliminate them quickly. Third, the typical varieties of phthalates used in flexible single-ply roofing membranes (high molecular weight phthalates) are generally not soluble in water, and thus have a difficult time being bio-assimilated, as solubility is normally required for biological assimilation.
The safety of medical devices and toys made of flexible vinyl was affirmed in 1999 by a blue-ribbon panel convened by the American Council on Science and Health (ACSH) and headed by former Surgeon General C. Everett Koop. Said Dr. Koop at the time:
According to Dr. Patrick Moore of Greenspirit Strategies:
“The anti-phthalate activists are running a campaign of fear to implement their political agenda. This fear campaign merely distracts the public from real environmental threats … and the cost of taking “the path of least resistance” is replacing DINP (a phthalate) with chemicals that have not been as thoroughly tested and found as safe.”
Among the many other organizations that have studied and confirmed the human safety and minimal environmental impact of phthalates are:
There are two main purposes for insulation. Insulation helps keep heat in during the winter and helps keep heat out during the summer. Whenever there is a temperature difference between the inside and outside of a building, heat tends to flow from the warmer to the cooler space. Insulation reduces or slows the heat transfer through the building envelope.
By understanding how heat moves, it is easier to understand how insulation works. There are three modes of heat transfer: conduction, convection, and radiation.
CONDUCTION is direct heat flow through matter. It is caused by fast moving molecules on the hot side colliding with and transferring energy to slower moving molecules on the cold side. It results from actual physical contact of one part of the same body with another part, or of one body with another. An example of conduction through contact is a cooking pot on the solid surface of a hot stove.
COVECTION is the transport of heat within air or liquid, caused by the actual flow of the material itself. Warm air rises and cold air falls to create a convection loop. The moving air either enters or exits a building during this process. Up to 45% of heat loss in winter happens through convection through the roof.
RADIATION is the transmission of electromagnetic rays through space. The radiant heat rays of the sun do not become heat until they strike an object such as the roof of a building. As the roof surface heats up, the heat energy is transferred by conduction throughout the rest of the roof mass. Infrared radiation from the sun is the source of 93% of the summer heat gain through a roof.
Thermal insulation does not stop the transfer of heat into or out of a building; it only slows down the transfer. R values are a means of showing the thermal value of an insulating material. R value is a measure of resistance to heat transfer by conduction and does not apply to other methods of heat transfer. Insulative materials act to hinder the flow of energy by using a gas and randomness of material to reduce direct contact (conduction) and air flow (convection).
R value has no utility to measure the reflective capability of a material. Highly reflective materials act to keep a surface cool by reducing the amount of the sun’s energy that is absorbed (radiation). The energy that is not reflected is either absorbed or emitted by the surface. The amount of radiation that is emitted is a function of the emissivity factor of the material. The most effective cool roofing materials then, are those with both high reflectivity (sun’s energy bounces off) and high emittance (easily sheds energy that is absorbed). A good cool roofing system combines reflective membrane with an optimum amount of insulation to reduce heat loss from convection in winter.
Our theme for Duro-Last’s 2010 National Sales Seminar, Partners for a Strong Tomorrow, was, by many accounts, the perfect fit for this year’s event. At Duro-Last, we are extremely proud that the relationships we have with our customers are unlike any in the roofing industry.
Many of our contractor customers have been partnering with us since the beginning of Duro-Last more than 30 years ago. At our Tucson event, we were thrilled to recognize those companies who have won a decade’s-worth – two decades’-worth – or even more – of Duro-Last sales awards. With respect to business strength, all we had to do was look around the hotel ballroom to see the history of excellence represented there.
In 2009, 20 Duro-Last contractors had sales of $1 million or more – a remarkable achievement considering the state of the economy. Parsons Commercial Roofing from Waco, Texas, was our Contractor of the Year for the fourth consecutive year and topped the $7 million dollar level in Duro-Last sales for the third straight year. With this accomplishment, Parsons now has the most total sales of any Duro-Last contractor in history.
In the early years of Duro-Last, there were many days when we weren’t sure what tomorrow would bring. Then – just as now – we depended on the commitment and loyalty of our customers and independent sales representatives. And we have enjoyed tremendous sales growth throughout our history as a result.
A proverb says that a cord with three strands is not easily broken. When we consider our three strands – authorized contractors, independent sales representatives, and the Duro-Last corporation – the future looks like it will be filled with terrific tomorrows for all of us.
The Duro-Last 2011 National Sales Seminar will be back in Orlando – this time at Disney’s Contemporary Resort. We’re already in the planning stages to make next year’s event the best ever for our business partners: the world’s best roofing contractors!