ROOFING QUESTIONS

Many types of roofing options are available for new roofs as well as roof repairs. Here are a few recent inquiries about roofs and roofing systems as addressed by Rodco President, Rod Brewer:

Question
What can we owners do on a regular basis to verify the maintenance and condition of our roofs?

Answer
We have emphasized throughout the industry the need for owners to implement a roof inventory database. This can be initiated by the roofing contractor that you rely on to evaluate your roof systems. The roofing contractor should conduct semiannual inspections and report the appropriate repairs as needed based on conditions at the time of inspection and immediate resolve to problems. It is the most proactive approach to increasing the useful performance of the roof system. After all, the ultimate goal is to stop the leaks that can cost much more than the repairs.

For roofs that are in need of analysis, the technology of infrared roof moisture surveys is always a positive approach and is becoming a popular method to identify areas of elevated moisture within a roof assembly. Typically, instead of spending a large sum of money to replace the entire roof, this type of inspection helps the building owner identify and replace only the problem area(s).


Question
I keep hearing about "spraying-on roofing." I am not referring to "coatings" but to systems which use polyurethane foam that is sealed with a wear and UV layer to protect it. It certainly sounds good. What are the advantages and disadvantages of this type roofing? Is there anything special that one should watch out for when having this type roof installed?

Answer
A "spray-on roofing" system, or a polyurethane foam roofing system, is a seamless roofing system that is, indeed, sprayed on. It is a two-part liquid that, when spray-applied, expands up to 30% to form a seamless lightweight roof surface. This application is normally used in low slope roofs.

The foam is then coated with a white highly reflective acrylic, silicone or urethane coating. This not only protects the foam against the harmful rays of the sun, but also reflects the sun and therefore provides the benefits of energy savings as well.

Polyurethane foam has an R value of 7.14 per inch of foam and may be applied at even a greater thickness for additional insulation values.

The main advantage of such a roofing system is that the polyurethane foam roof has been known to last for as long as 25 years and can be applied to new roofs as well as older roofs, eliminating the need for a tear-off. Because it is sprayed, it easily adheres to any surface to which it is applied, such as vent stacks, parapet walls, HVAC curbs, etc. When the time comes to re-roof, a simple re-coating is all that is needed.

The cost factor is usually higher initially for the polyurethane foam application. However, once the heather and cooling savings are factored in, the initial higher cost is quickly absorbed.

You might consider the Duro-Last Roofing System. Duro-Last is proud to be a charter partner of the ENERGY STAR® Roof Products Program. The ENERGY STAR label indicates to building owners and managers that the Duro-Last white vinyl roof membrane can save them money on cooling costs due to its high reflectivity (reflects 88% of the sun’s energy). Duro-Last is also a charter member of the Cool Roof Rating Council (CRRC) and a member of the United States Green Building Council (USGBC). Duro-Last participates in all major technical committees in the roofing industry, plus the American Society of Testing Materials (ASTM).

This single-ply system has one of the most comprehensive warranties in the industry. It is an excellent product, manufactured specifically for your location in a controlled environment prior to being installed. The re-roof over existing substrate will enhance years of leak-fee roof performance.

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