Linetec offers antimicrobial protection in 30,000 colors for architectural metal products’ high-touch surfaces

ArchResourceImage-arch resource centerLinetec offers the use of antimicrobial protection for architectural metal products’ high-touch surfaces such as handrails, entrances systems, window frames, panels and column covers. These high-performance coatings are available in more than 30,000 color choices.

Linetec provides architectural coatings in nearly any imaginable color with protection that exceeds other conventional finishes on metal building products’ interior and exterior surfaces. Anywhere the growth of stain and odor-causing bacteria is a concern, projects can benefit from this extra level of protection. We understand that this is especially important for those working on health care facilities, educational campuses and other public building projects.

Providing further description of the uses and advantages of antimicrobial coatings, Linetec co-authored a white paper titled, “Antimicrobial Protection for Public Building Applications.” According to the paper, “The need for microbial control stems from the fact that there are an estimated 4.5 million bacterial and fungi species throughout the planet, many of which travel and migrate via the constant ebb and flow of human foot traffic through an ever-changing population of people visiting public buildings. Under the right conditions, some microbes can double in number every 30 minutes or faster.”

ArchResourceImage-LinkedInAt Linetec, antimicrobial protection is infused into select polyvinylidene fluoride (PVDF) finishes to inhibit the growth of stain and odor causing bacteria on the coating of aluminum surfaces. As a fluoropolymer finish containing a minimum of 70 percent PVDF resin, this three-coat system meets requirements of AAMA 2605, the most stringent specification for architectural coatings.

An environmentally responsible finisher, Linetec safely captures and destroys the volatile organic compounds (VOCs) present in liquid paints at the factory before arrival on the building site. These industry-leading practices complement other health-conscious and green building choices such as maintaining indoor air quality (IAQ) guidelines, using recycled aluminum content, and ensure a long-lasting, durable and sustainable finish.

For more information about our high-performance finishing services, please visit http://www.linetec.com. The white paper is available free for download at www.linetec.com/PAINT/Antimicrobial-Protection-Whitepaper.pdf.

Working on a coastal project? Start with the right finish

CA-BrenHallPayamRahimian-webCoastal areas are beautiful locations for commercial and residential buildings. They also pose the greatest challenges in protecting exterior-facing architectural aluminum products from corrosion. Windows, storefronts, entrances and curtainwalls, sun shades, canopies, skylights, column covers, rain screens and exterior panels all commonly are manufactured from aluminum and integrally connect to a building’s façade. Without proper precautions and finishes, corrosion to these components ultimately can damage the structural integrity of the building envelope and can lead to systemic failure.

PortCanaveral1-(1web)As a prominent part of the buildings’ exterior, the coated aluminum adds color and design to the project; this coating also protects the building from unsympathetic surroundings. When selecting a coating that will be required to stand up to harsh coastal or corrosive environments either the highest-performing organic paint coating, that meets the AAMA 2605-11 specification, or a Class I anodize coating that meets AAMA 611-12 should be selected. AAMA continues to set the highest standard for architectural coatings, especially in a coastal or highly corrosive environment.

High-performance 70% polyvinylidene fluoride (PVDF) coatings give architects, specifiers and building owners the capability to select nearly any conceivable color or combination of colors, while shielding the building against weathering, pollution and aging.

PVDF is known for its exceptional chemical stability and excellent resistance to UV radiation. It is used in architectural applications as a coating on aluminum where it provides exceptional resistance to environmental exposure. The chemical structure of PVDF is:chemical structure PVDF

The carbon-fluorine bond, used in the 70% PVDF, Kynar 500 resin-based, coating is one of the strongest bonds known. These paint coatings have the ability to withstand enduring and intense UV radiation, attributed to long-term color- and gloss-retention, and chalk-resistance.

TampaMuseumArt-AccuratePerforating-webThese highest-performing 70% PVDF coatings meet the most stringent, exterior, architectural specification AAMA 2605-11. This specification requires paint coatings to meet rigorous testing performance standards including more than 4,000 hours of salt spray, and heat- and humidity-resistance.

Section 8.8 of AAMA 2605 refers to the corrosion resistance requirements of all coating that must pass these stringent guidelines:

  • Humidity –The sample is exposed in a controlled heat and humidity cabinet for more than 4,000 hours at 38ºC (100ºF) and 100% relative humidity. No formation of blisters to extent greater than “few” blisters, as defined by ASTM D714.
  • Cyclic Corrosion Testing (previous referred to as salt spray resistance) – Score the film sufficiently deep to expose the base metal. Expose the sample for 2,000 hours according to ASTM G85, Annex A5, dilute electrolyte cyclic fog/dry test. The sample must score a minimum rating of 7 on scribe or cut edges and a minimum blister rating of 8 within the test specimen field, as defined in ASTM1654.
  • South Florida exposure – The coating shall maintain its film integrity, color retention, chalk resistance, gloss retention and erosion resistance properties for a minimum of 10 years on the south Florida on-fence testing site.
  • Color retention – Maximum of 5ΔE Units (Hunter) of color change after the minimum 10-year exposure test. A ΔE unit is the variance or color difference measured on a vector scale from a specific point in the color space.
  • Chalk resistance – Chalking shall be no more than that represented by a No. 8 rating for colors and No. 6 for whites after 10 years of test fence exposure. Per ASTM D4214, chalking is measured on a numerical scale with higher numbers representing better chalk resistance.
  • Gloss retention – Gloss retention shall be a minimum of 50% after the 10-year exposure testing, as described by ASTM D 523.
  • Resistance to erosion – Less than 10% film loss after the 10-year exposure testing.

Linetec, and the leading paint manufacturers, recommend the use of a PVDF-based paint system on aluminum material for all coastal and corrosive environments.Offering the longest lifecycle and true sustainability, a 70% PVDF (Kynar) coating system, pretreated with chrome phosphate, along with an inhibitive chrome rich primer should be used. This coating type meets or exceeds all the requirements of AAMA 2605 the highest performing “Voluntary Specification for High Performance Organic Coatings on Architectural Extrusions and Panels.”

To ensure your finish offers specifiable differences that contribute to your project’s long life, durability and sustainability, download a free copy of “Section 05 0513 Shop Applied Coatings for Metal 3-part Guide Specification”

A Cleaning and Maintenance Guide for aluminum coatings

High quality architectural painted and anodized finishes are extremely durable. But even the best finishes still need a little TLC.

Even with the most careful treatment of the windows, curtainwall or storefront during installation and in their daily use, occasional damage will occur.

This Protecting-your-aluminum-finish guide shares recommended care of painted and anodized finishes on architectural metal and examines three levels of concern: care and cleaning, minor repairs and field touch-up, and more complex refinishing caused by severe damage.  read more

Recommendations from the Paint Manufacturers

PPG and Valspar – offers two main precautions: (1) do not use wire brushes, abrasives or similar cleaning tools which will mechanically abrade the coatings surface, and (2) certain cleaning agents (listed in full article) should be tested in an inconspicuous area before use on a large scale.

Download the full paper here

PPG’s full cleaning and maintenance guide can be found here.

Valspar’s full cleaning and maintenance guide can be found here.