METAL PANEL COATINGS & FINISHES


Materials | Colors


Flexospan offers four standard coatings, each providing a different level of protection, as well as a mill finish. The coatings are available in our standard colors, or in custom colors as a special order.


Siliconized polyester
and Kynar 500®/Hylar 5000® -type fluorocarbon coatings are stocked in a smooth finish. Flexshield (vinyl plastisol) has a ripple finish as standard, with 4 mils of color on the exterior and four mils of standard white on the reverse.

Flexshield is available with up to 8-mils-thick coating on both sides or in a striated finish as a special order. The siliconized polyester and fluorocarbon coatings are available with stucco embossing as a special order. All special orders are subject to minimum requirements. For more information, contact Flexospan sales.

ZAM® is a highly corrosion-resistant hot dip coated steel sheet that has a coating layer of zinc, 6% aluminum, and 3% magnesium.

Key attributes of ZAM®

  • Significant cost savings due to longer service life, lower maintenance and elimination of need for other coatings or treatments.
  • Thinner coating than other metallic coatings, thus reducing cost and benefiting the environment.
  • Superior cut edge rust protection over other coated products.
  • Performs exceptionally well in animal confinement enfironments (high chloride and ammonia) as compared to any other coated products.



Test data follow these descriptions:

Standard Coatings      

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Flexshield, our standard, vinyl plastisol coating is flexible, corrosion-resistant and attractive.

The high solids content (80% - 90%) and the absence of highly volatile solvents in Flexshield means that it can be applied as a heavy film and then heat-fused to form a durable, continuous coating. It's applied in two coats. The first is a special polymer primer, which enhances bonding. Then, a 4-mil to 8-mil-thick top coat is roll coated to both the interior and exterior surfaces.

Our vinyl plastisol received an outstanding rating in the Kesternich Cabinet test, the industry-accepted test of environmental, atmospheric, and acid rain pollutants. Its uncommon flexibility will protect your panels, yet remain intact during rolling and fabrication. In tests of color change, chalking resistance, formability, humidity, abrasion and salt spray, it equals or surpasses competitive coatings.

You need the most protection for your building. Flexshield is formulated to stand up to the harsh industrial pollutants that quickly eat through standard coatings. An ideal coating for waste water treatment plants, paper mills, chemical processing plants, fertilizer plants and steel plants, it's an investment that pays off in the extended life of your buildings.

Whether a corrosive atmosphere is generated from interior or exterior sources, you have extra protection. Contact Flexospan for more information or for help in determining the proper thickness of finish for your specific project.

  • G-90 galvanized
  • Galvalume®
  • 3003 aluminum
  • Painted aluminum is available as a special order, subject to quantity requirements.
     

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Kynar 500®Hylar 5000® high-content fluorocarbon coatingshave excellent color retention, durability and chalking resistance and are suitable for most architectural uses. With Kynar®/Hylar®-type resins and a high-volume of ceramic pigments, color is true and long lasting. You need the best performance against color fade and chalking. It's an excellent choice for roofing, siding, column covers and other architectural applications where a long-lasting surface appearance is required.
  • G-90 galvanized
  • Galvalume®
  • 3003 aluminum
  • Painted aluminum is available as a special order, subject to quantity requirements.
     

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Siliconized polyester paint system, is an economical, long-lasting protective coating, suitable for standard use. Used in the construction industry for years, siliconized polyester coatings have been improved with the addition of ceramic pigments, which help minimize color fade and chalking. You want the most economical, painted finish. This coating works especially well when your color selection is in lighter shades and earth tones, and color fade is not critical.
  • G-90 galvanized
  • Galvalume®
  • 3003 aluminum
  • Painted aluminum is available as a special order, subject to quantity requirements.

Mill Finish

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Standard mill finish is the most economical material. When economy is your most important consideration. A bare finish is appropriate for high heat and utilitarian building covers.

A mill finish is available in G-90 galvanized, Galvalume® and acrylic-coated Galvalume® (Acrylume®), for standard applications. It's also available in 3042B stainless and mill-finish, smooth 3003 aluminum for highly corrosive atmospheres too corrosive for zinc bonded carbon steel products.

  • G-90 galvanized
  • Galvalume®
  • Acrylic coated Galvalume®
  • Type 3042B stainless steel
  • 3003 aluminum

Test Data
To meet these specifications, coating must be applied over a properly cleaned and pretreated G-90 galvanized, Galvalume® or aluminum substrate.
Specification Vinyl Plastisol Kynar®/Hylar®-Type Siliconized Poly
Film Thickness
NCCA II or ASTM D 1005-84
Top side: Primer, dry = 0.15 mil – 0.25 mil; Top coat, dry = 4.0 mil, minimum
Reverse side: Primer, dry = 0.15 – 0.25 mil;
top coat, dry = 4.0 mil, minimum
Top side finish: Primer, dry = 0.2 mil; Top coat, dry = Full strength 70% Kynar® 500/Hylar® 5000, 0.7 mil – 0.9 mil
Reverse side: Primer, dry = 0.2 mil; pigmented polyester backer = 0.35 mil – 0.45 mil
Top side: Primer, dry = 0.20 mil – 0.25 mil; Top coat, dry = 0.7 mil – 0.9 mil
Reverse side: Primer, dry = 0.15 – 0.25 mil; pigmented polyester backer, dry = 0.35 mil – 0.45 mil. Total DFT for system = 0.90 – 1.15 mils.
Gloss (60°angle)
ASTM D 523-89
20%-40% 25% - 35% 25% - 40%
Pencil Hardness
ASTM D 3363-92a
Not applicable Minimum pencil hardness is HB to 2H Minimum pencil hardness is "F"
Bend adhesion
ASTM D 4145-83 or NCCA II-19
No cracking of finish or loss of adhesion when taped with Scotch #610 cellophane tape after being subjected to an OT diameter 180° bend test on 0.017" G-90 galvanized or fabricator’s roll-forming operation. 0T to 2T, no loss of adhesion Slight micro cracking of finish and no loss of adhesion when taped with Scotch #610 cellophane tape after being subjected to an 2T diameter 180° bend test on 0.017" G-90 galvanized or fabricator’s roll-forming operation.
Cross-hatch adhesion
ASTM D 3359-93 or NCCA II
No coating removal with Scotch #610 cellophane tape after cross-scoring with 11 horizontal and 11 vertical lines, 1/8" apart. No loss of adhesion No coating removal Scotch #610 cellophane tape after cross-scoring with 11 horizontal and 11 vertical lines, 1/8" apart.
Impact
ASTM D 2794-93
No coating removal with Scotch #610 cellophane tape after direct and reverse impact of 160-inch pounds on 0.017" G-90 galvanized, using 5/8" steel ball on a Gardner Impact Tester at 77°F. No loss of adhesion on steel, 3 x thickness per inch-pound; no loss of adhesion on aluminum at 11/2 x thickness per inch-pound No visible coating removal with Scotch #610 cellophane tape after direct and reverse impact of 80-inch pounds on 0.017" G-90 galvanized, using 5/8" steel ball on a Gardner Impact Tester at 77°F.
Salt spray resistance, ASTM B 117-90 Samples diagonally scored and subjected to 5% neutral salt solution spray for 1,000 hours, then taped with Scotch #610 cellophane tape. No more than 1/16" creepage from scribe and no blistering in unscribed areas of diagonally scored panels At 1,000 hours, creep from scribe <= 1/16-inch, no blisters on HDG; at 3,000 hours, no creep from scribe and no blisters on aluminum substrate; 2000 hours Galvalume® substrate and 3000 hours aluminum substrate Samples diagonally scored and subjected to 5% neutral salt solution spray for 1,000 hours, then taped with Scotch #610 cellophane tape. No blistering and no loss of adhesion greater than 1/16" from score line
Humidity resistance,
ASTM D 2247-92
No blistering, cracking creepage, peeling, loss of gloss or softening of finish after 3,000 hours of exposure to 100% humidity at 100°F ± 5°F At 2,000 hours of 100% RH, no field blisters on HDG/Galvalume®; at 3,000 hours of 100% RH, no field blisters on aluminum No blistering, cracking, peeling, loss of gloss or softening of finish after 1,000 hours of exposure to 100% humidity at 100°F ± 5°F
Chemical resistance
ASTM D 1308-87
No effect on physical properties after 500 hours exposure to either 10% sulfuric or 10% hydrochloric acid solution (spot test) 10% hydrochloric acid, 24 hours, no visible changes; 20% sulfuric acid, 18 hours, no visible changes No significant color change after 24 hours exposure to either 10% sulfuric or 10% hydrochloric acid solutions (spot test)
Abrasion resistance
ASTM D 968-93
Withstand 60 L/mil, of falling sand before appearance; standard 4 mil thickness = 240 L. Withstands 67L/mil of falling sand before appearance Withstands 30 liters/mil of falling sand before appearance
Accelerated weathering,
Weatherometer
Per ASTM D 4587-91, no cracking, peeling, crazing or adhesion loss of external coating system after 2000 hours accelerated weathering; no chalking greater than #8 rating per ASTM D 4214-89

Per ASTM D 3361, 2000 hours, maximum color change of 2AE Hunter units; a chalk rating of no less than 8 (ASTM D659) Per ASTM D 822-89/G 23-93 (Weatherometer), no checking, blistering or adhesion loss of external coating system after 2,000-hour test, no chalking greater than #8 rating per ASTM D 4214-89



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