AAMA updates paint specifications to -17

AAMA-proud memberThe American Architectural Manufacturers Association (AAMA) regularly reviews and updates its specification documents, including for painted coatings. The association’s Aluminum Material Council’s Finishes Committee has adjusted AAMA 2603, 2604 and 2605. The most current versions are denoted as 2603-17A, 2604-17A and 2605-17A.

What’s changed?

In the updated AAMA specifications, the procedure rating the adhesion of coatings to different substrates (via tape test) has been removed. Those standards are still required to meet AAMA’s guidelines, but now Section 8.4 Peel Adhesion refers the reader to ASTM D3359 to find the details on tape testing. These AAMA specifications also reference ASTM D3359-17 for the new requirements for tapes used in adhesion testing.

Section 8.4.1 now clarifies that all tests shall be performed in the sequence they appear in the document. Connected to this, the order of testing has been changed in the specifications. References to subsections of 8.4 also have been updated in Section 5.5.

What’s remains the same?

As a member of AAMA, Linetec stays up to date on these stringent industry standards and documents. We are committed to ensuring our customers’ finishing specifications are met on every project.

For a quick refresher, here’s what to remember about AAMA 2603, 2604 and 2605:

AAMA 2603 – typical for interior specifications

Required to show only “slight” fade and chalking after one year, AAMA 2603 has no specifications for gloss retention and erosion resistance. Baked enamel (acrylic/polyester) paints should meet AAMA 2603. These painted finishes are less expensive than fluoropolymer resin-based coatings, but have poor resistance to color fading and chalking. Baked enamel coatings are harder than fluoropolymer and can be used for interior application where color retention is not required.

AAMA 2604 – an “intermediate” specification

AAMA 2604 specifications are more demanding. If a finish qualifies, then five years after its application the color must have faded no more than 5 Delta E, the chalking no greater than 8, the finish still retain 30% of its gloss and no more than 10% of it has eroded. This finish will provide good color and gloss retention. It also will provide good hardness and abrasion resistance. Painted finishes meeting this specification typically are a 50% fluoropolymer resin-based coatings and are commonly applied on aluminum storefront framing, entrances or other high-traffic areas.

AAMA 2605 – the specification for high-performance exteriors

Ten years after it has been applied, an AAMA 2605 paint will have faded no more than 5 Delta E, the chalking will be no higher than 8, 50% of its gloss will still be retained and only 10% of the film will have eroded. These finishes exhibit outstanding resistance to humidity, color change, chalk, gloss loss and chemicals. Painted finishes meeting this specification typically are a 70% fluoropolymer resin-based coatings and are commonly applied on aluminum framing and systems for monumental architectural projects.

For personalized assistance in selecting and specifying the right coating for your aluminum building products, please contact Linetec’s regional sales managers , email sales@linetec.com or call 888-717-1472.

To download the latest version of these, or any, AAMA documents, visit the AAMA Publication Store

Anodize Nickel Test

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Nickel Test

When extreme hardness is required for aluminum building components, such as in high-traffic areas, like entranceways and railings, an AAMA 611-14 anodized aluminum finish should be specified.

The hardness of anodized aluminum rivals that of the diamond.

This “Nickel Test” demonstrates why a Class I high-performance anodize coating is the perfect choice for exterior architectural applications.

How long will my paint’s color last?

PRESTON-HYUNDAI-1---Preston-MD=webFrom the moment painted coating is applied to a surface, it begins to degrade from exposure to the elements. Over time, the difference between a coating’s original and current color becomes more pronounced. Selecting a coating designed for the environment where the painted aluminum product is installed, and taking steps to protect it, will help ensure color that lasts as long as possible.

When discussing how long a painted coating’s color will last, we usually refer to “fade.” Fading occurs from the oxidizing or leaching of pigment from the paint, causing its color to alter from its original application. Intense UV radiation (i.e. daylight) also causes fading. All paint color will fade eventually, but the degree of fade can be reduced with knowledgeable selection and basic maintenance.

Specifying for Fade Resistance

The American Architectural Manufacturers Association’s industry-leading performance standards – AAMA 2603, 2604 and 2605 – for architectural painted coatings specify color retention in terms of Delta-E (dE). A dE is a unit of measurement between two colors where 1.0 is the smallest difference a human eye can see. As time passes and a finish drifts from its original hue, its dE increases.

  • AAMA 2603 requires that a paint show only “slight” fade after one year. This pertains to baked enamel coatings typically used for interior application where color retention is not a large concern.
  • AAMA 2604 requires that a painted coating must not fade more than 5 dE over five years. This pertains to 50% PVDF resin-based coatings and typically is used for storefronts, doors or other high-traffic areas.
  • AAMA 2605 requires that a painted coating must not fade more than 5 dE over 10 years. This pertains to 70% PVDF resin-based coatings and typically is used for curtainwall and window wall on monumental architectural projects.

Formulating for Vibrant, Durability

The composition of a paint’s pigments will influence how quickly it fades. Inorganic pigments fade more slowly than organic pigments. Some brighter, more vibrant colors – such as bright red – traditionally use organic pigments to achieve their desired hue. The organic pigment’s greater susceptibility to fading can be combatted by applying a clear-coat over the topcoat of paint. This helps minimize UV exposure to the more vulnerable pigment.

WeatheringPanels

Image shows fade comparison of Kynar 500 (AAMA 2605) to Polyester (AAMA 2603)

Cleaning for Longevity

Once applied, even a durable finish will require occasional cleaning to slow its fading. Avoid cleaning a coated surface with strong acid or alkali cleaners. Instead selecting a mild soap solution for washing your finished surfaces.

Learn more about color retention and Linetec’s paint finishing services by clicking here . For personalized assistance in selecting the right coating for your aluminum building products, please contact Linetec’s regional sales managers , email sales@linetec.com or call 888-717-1472.

 

Architectural Anodize Data Sheet

Process  .  Warranty  .  AAMA Specifications  .  Guide Spec

Download Complete Data Sheet

architectural-anodize-data-sheet-1Architectural Anodizing combines science with nature to create one of the world’s best metal finishes. The coating produced is extremely durable, and the second hardest substance on earth.

The typical anodizing employed in the architectural industry is called two-step electrolytic.” The actual anodizing and coloring of the aluminum occur in separate steps…    read more

Class I and Class II Anodize

Class I and Class II anodic coatings are designations created by the Aluminum Association for the purpose of codifying the specification of anodized aluminum.

Class I coating has a mil thickness of 0.7 (18 microns) or greater
Class II coating has a minimum mil thickness of 0.4 (10 microns)

Class I coating is a high performance anodic finish used primarily for exterior building products and other products that must withstand continuous outdoor exposure. read more

Strengths of Anodizeimg_0137

  • Durability, abrasion resistance
  • Metal appearance
  • Excellent weatherability (Class I)
  • Color stability
  • Non-hazardous, produces no harmful or dangerous by-products

Anodize Warranty

Linetec’s documented testing allow us to offer warranties of 5 years, on Class I Anodize finishing, with confidence that your product will perform as intended.

In some cases, with prior approval and a minimal up-charge, Linetec can offer an extended anodize warranty up to 10 years.  read more

AAMA Specifications

In order to ensure the anodize performance expected for an architectural / commercial application, AAMA 611-14 specification should be referenced along with the anodize color.

Beyond the stringent standards and regulations, Linetec offers a downloadable guide spec with specifiable differences that contribute to a project’s long life, durability and sustainability.  read more

Cleaning and Maintaining your Aluminum Finish Guide

damaged_anodize-mcdonalds-door-brickwashThis paper discusses the recommended care of painted and anodized finishes on architectural metal and examines three levels of concern: care and cleaning, minor repairs, and more complex refinishing.   read more