National Coatings Blog

What is "Critical Peak Pricing?" How does it Relate to Roofing?

Posted by Nicole Gale on Thu, May 08, 2014 @ 11:00 AM
More specifically: How can electrical utility initiatives help me save money when I coat my roof white?

Critical Peak Pricing (CPP) is a pricing model used by electrical utilities where the cost per kilowatt-hour varies, depending on time of day.  Electricity peak demand times, usually in the afternoon in the summer, will be charged at a premium or higher rate than other times during a 24 hour period.  The term "net metering" is sometimes used to determine and record peak demand.   Electrical utility companies have begun installing "net meters" that calculate kilowatt usage during "peak demand" and "normal or low demand" periods.  This information is used to determine costs based on this two-tier pricing model. 

"So how does this relate to roofing?" If the user can reduce electrical usage, they will save money.  This can easily be accomplished by reducing air conditioning electricity usage.  A very easy and cost-efficient way to achieve this is to coat the building's roof with a white reflective roof coating

The roof life extension benefits of white reflective roof coatings have been well documented.  Now, the initiative described above offers even more of an incentive to coat your roofs white with National Coatings AcryShield roof coatings. Download our Roof Coating Systems brochure to find out more.
Cool Roof

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UL Listings...What They Really Mean for Roofing Products

Posted by Nicole Gale on Thu, May 01, 2014 @ 10:00 AM

UL Roofing ProductsRoofing professionals: architects, consultants, specifiers and contractors have all seen the ubiquitous UL logo on product literature, approvals, roll goods, membranes, accessories and coating products.

Underwriters Laboratories Inc. (UL) is an independent product safety certification organization. Established in 1894, the company has its headquarters in Northbrook, Illinois. UL develops standards and test procedures for products, materials, components, assemblies, tools and equipment, chiefly dealing with product safety.

While the UL logo provides some reassurance regarding fire safety of roofing materials, there is often some ambiguity about what REALLY is listed on the UL website.  UL tests SYSTEMS, not individual roofing components.  The presence of the UL logo merely shows that a product, e.g. rolled roofing material, membrane, or coating is part of a tested system that meets the UL criteria. 

This means it is imperative that the specifier, consultant, designer of record, or contractor must use all the components in that rated system.  Merely incorporating some of the components or "cherry picking" components is not permitted and violates the intent of the UL listing.

National Coatings Corporation has an extensive list of UL listings. 

These can be found in the UL website: click here.

One most notable listing is the National Coatings approval where AcryShield coatings are applied over existing roofing systems.  Consider a building owner who states that they have a UL listed roof, and are concerned that applying a maintenance coating will void the UL listing.  The following is extracted from the National Coatings Corporation UL listing:

14. Deck: NC or C-15/32

Incline: See Note 1

Existing Roof System: - Any EPDM, TPO, Hypalon, PVC, TPA, modified bitumen or CPE single ply membrane system, mechanically fastened or fully adhered, non-insulated or insulated.

Surfacing: - "AcryShield", 1½ to 6 gal/sq. May be reinforced with fabric (3 oz/sq yd max).

Note 1: Classification (A, B or C) and maximum 2-in incline for membrane manufacturer's insulated or non-insulated Roofing Systems (TGFU) Certification.


The above all encompassing listing allows for the use of AcryShield roof maintenance coating while maintaining the original UL listing for the existing roofing assembly.

In summary, when considering a reroofing or recoating project, be sure to understand the specifics of the full roofing assembly and specify the appropriate system that conforms to the building owner, and local code requirements.

For more on our roofing systems, credentials and ratings, download our Free Product Brochure.


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