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

What are common paint defects? How do you minimize them?

ILRegatta_MagellanSelecting the proper architectural paint for a project’s architectural aluminum products can ensure a visually pleasing result for years to come. Even when the correct painted coating is chosen, other factors can cause unforeseen defects to the aluminum product’s surface. Here are some common flaws that may occur, and how to correct or avoid them.

Pretreat the Metal, Dry Thoroughly

The condition of the surface to be coated plays a big role in the final product. The presence of oil, grease or other contaminants can cause adhesion failure in the paint. This could result in the topcoat peeling or flaking off. The rolling process of tubes and extrusions also can leave such a residue. For architectural finishes applied at a paint facility, baking of the paint after application is required, any reside not removed prior to painting, may run, or leach out, from beneath the coating, damaging both the paint and metal.

Your finishing applicator can avoid these flaws by pretreating the metal before paint ever touches it. Using a combination of high-power water rinses, high-temperature acid clean, etch and desmut and a chromium phosphate coating will remove most contaminants and increase the corrosion-resistance of the aluminum. A thorough drying process afterward will ensure that any remaining moisture is evaporated and that the finishers have an ideal surface on which to work.

Know Your Oil

Non-water soluble oils can lead to “fisheye” problems. Fisheye is a defect where circular depressions or “craters” appears in the finish. Most pretreatment systems are not equipped to remove these oils in advance, so if you suspect them to be present on your surface, be sure to discuss this with your finisher.

Watch for Corrosion

If the metal was stored outside before painting, it may suffer from corrosion in spots, which will stain in areas after being finished. Corrosion can be minimized or removed entirely by sanding the affected areas of the metal prior to finishing.

spray application4Apply with Care and Control

The process of paint application also can cause defects to appear later. Blisters or “pops” can appear beneath the surface of the finish after the curing process is complete, if there wasn’t enough flash off time before baking. Inconsistent coloring can occur in the paint if its application was inconsistent or the thickness of the finish varies across the surface. This will result in a coat that has color variation throughout, particularly if viewed from different angles.

These flaws can be avoided by quality-controlled, standard operating procedures for paint application on the part of the finishers. By applying the coating consistently throughout the process, the finishers can ensure less variation in the end product. A combination of automated spray equipment and painting specialists, helps to ensures an even, gradual coating application to prevent film build-up.

Send a Sample

If you are still concerned about the opportunity for defects in your architectural paint, consider sending a sample sheet of the metal that will be used to your finisher, as a mock-up, in advance. By applying the exact process that would be use for your actual project, any potential flaws can be identified and corrected in advance.

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Learn more about Linetec’s quality control and 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

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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.

Architectural Paint Data Sheet

Process  .  Warranty  .  AAMA Specifications  .  Guide Spec

Architectural-Paint-Data-Sheet-1Download complete data sheet

High-performance fluoropolymer resin-based coatings may be defined as a thin layer of plastic film containing resin, binder and pigments that is applied to the surface of an object to provide protection and a decorative organic coating. The exact composition of a particular paint coating is often complex and proprietary.

Fluoropolymer resin-based coatings provide protection against… read more

High-Performance Architectural Paint Process

Paint systems are designed to be applied over clean metal that has been properly pretreated.

Without a proper pretreatment, delamination will likely happen within the first year of installation. To prevent, and warranty against, this type of failure a chrome-type pretreatment is recommended.    read more

ArchResourceImage-LinkedInStrengths of High-Performance Paint

  • Color Retention (UV resistance)
  • Salt-spray resistance
  • Vast array of color choices
  • Paint protects and maintains the structural integrity of the aluminum
  • Field touch-up / repainting capabilities
  • Small-batch and custom color capabilities – fast and cost effective

Paint Warranty

Projects painted by Linetec, utilizing liquid PVDF resin-based coatings, are warranted by the strength of both Linetec and the paint manufacturer. Linetec’s documented testing allows us to offer warranties of 10 years, on high-performance (AAMA 2605) coatings, 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 warranty up to 20 years on AAMA 2605 coatings. read more

AAMA Specifications

In order to ensure the paint performance expected for an architectural / commercial application, AAMA 2605 specification should be referenced along with the paint 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

Damaged_Anodize-McDonalds door-brickwashCleaning and Maintaining your Aluminum Finish Guide

This 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

Construction Specifier shares Linetec’s anodizing expertise

Flapper2-webThe April issue of Construction Specifier features “Five Factors for Variation in and Anodize Finish,” authored by Linetec’s Tammy Schroeder.

The six-page educational article describes the anodizing process and key considerations to minimize color variation. These essential factors include:

  • Aluminum alloys and their alloying elements
  • Mixing aluminum alloys means mixed results
  • Primary vs. secondary aluminum
  • Chemistry of the anodize process
  • Surface preparations

Construction Specifications Institute members received the printed magazine, and all can view the feature online, page 62.

After April, please visit https://www.constructionspecifier.com to create a free account and access the archived digital editions.

Follow the links to learn more about Linetec’s anodize process and how we ensure the most consistent color.

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.

 

Antimicrobial Protection for Architectural Aluminum

people-quoteLinetec offers antimicrobial protection infused into 70% Kynar 500 PVDF resin based coatings for the use on high-touch, architectural metal products’ exterior and interior surfaces, such as doors, windows, curtainwall, entrances, panels and column covers.

Available in nearly any color options: standard and custom colors, mica and metallic coatings.

Available in thermal strut systems, where products can be manufactured with two-tone finishes. You can chose to apply the interior and exterior finishes that best match their your cost, performance and design requirements.

germ-hand-web24/7 Protection:
Antimicrobial protection is infused into select Linetec 70% PVDF-based fluoropolymer product finishes helping to inhibit the growth of stain and odor causing bacteria that may affect the surface of the coating. It protects product finishes from microorganisms such as bacteria that may cause odor and deterioration of the physical properties of the coating.

How it Works:
When moisture is present, the ion exchange mechanism in the antimicrobial finish is activated and silver cations are released. The released silver acts on odor causing bacteria by disrupting metabolism and reproduction

microbes

Bacteria cells

Whitepaper: Antimicrobial Protection for Public Building Applications

Antimicrobial protection infused into 70% Kynar 500 Fluorosurfactant Free PVDF resin based coatings for public building applications

FOR MORE INFORMATION

Email sales@linetec.com
Contact your regional sales manager
Phone us at 888-717-1472