Architectural Metal Coatings Paints… · Applications Architectural Culture & Market Durability...
Transcript of Architectural Metal Coatings Paints… · Applications Architectural Culture & Market Durability...
Architectural Metal CoatingsWhat is in a Coatings Specification?
Specifications and Education for:
• Architects
• Owners
• Consultants
• OEM
• Contractors
Arturo Lugo AIA Architectural Specifications North America
302.635.4980
Applications Architectural Culture & Market
Durability Standards
Resins Color Characteristics
Examples
Architectural Coatings
Types of coatings
Factory Application
Proper surface preparation
Coating Application
Curing
Application Video
Architectural Metal Products
• Decorative Metal Railings
• Metal Roof & Wall Panels
• Aluminum Doors, Frames,
Windows, Entrances &
Storefronts
• Elevator Components
• Aluminum Curtain Walls
• Metal-Framed Skylights Moynihan Sation NYC
Nottingham Library
• Flashing, Coping & Trims
• Louvers and Vents
• Metal Fencing, Bollards, Wastebaskets & Outdoor
Accessories
• Metal Lamps & Posts
• Furniture & Cabinets
• Metal Building Systems
Architectural Metal Products
Richmond VA City Hall
Applications
Architectural Culture &
MarketDurability Standards
Resins Color Characteristics
Examples
North America
Middle East
Asia Pacific
Europe
QLab testing facility
ApplicationsArchitectural Culture
& MarketDurability Standards
Resins Color Characteristics
Examples
AAMA - American Architectural Manufacturers Association
Specification 2603 2604 2605
South Florida South Florida South Florida South Florida
Weathering Weathering Weathering Weathering
Color retention 1 year "slight fade" 5 yrs: Fade = 5 Delta E 10 yrs: Fade = 5 Delta E
Chalk Resistance 1 year "slight chalk" 5 yrs : Chalk = 8 10 yrs : Chalk = 8
Gloss Retention No Specification 5 yrs: 30% retention 10 yrs 50% retention
Erosion Resistance No Specification 5 yrs : 10% Loss 10 yrs : 10% Loss
Liquid DFT 0.8 mils min 1.2 mils min 1.2 mils min
Powder DFT 2.0 mils min 2.0 mils min 2.0 mils min
Pretreatment System Chrome or Chrome Free Chrome or Chrome Free Chrome or Chrome Free
Accelerated Testing
SaltSpray 1500 hrs 3000 hrs 4000 hrs
Humidity 1500 hrs 3000 hrs 4000 hrs*
AAMA 2605 – Corrosion is now tested at 2000 HR G85A5 Cyclic Corrosion
ASTM B117
Most commonly referenced coating standards for coated fenestration products
Florida climate combines
• Strong UV attacks
• High temperatures
• High humidity
Florida testing consists of observing color variation and gloss change over time.
Lab equipment
• Accelerated exposure tests
• Performance tests
• Specialized tests (temperature, corrosion, etc)
There are two basic weathering failure modes:
• Chalk: failure or degradation of the resin
• Fade: breakdown of the pigment
In each case, the resin builds the film and binds the coating
to the substrate, providing the weather resistance and
durability properties desirable in an architectural coating.
AAMA Specification: Fade & Chalk
Understanding AAMA / Qualicoat
Resin selection
Color selection
Testing
ApplicationsArchitectural
Culture & MarketDurability Standards
Resins Color Characteristics
Examples
Different resin types commonly used in the metal industry:
Acrylic liquid AAMA 2603
Polyester liquid AAMA 2603
Polyester powder AAMA 2603
PVDF 50% liquid AAMA 2604
Super durable polyester powder AAMA 2604
PVDF 70% liquid AAMA 2605
Fluorocarbon powder FEVE AAMA 2605
Resins used to achieve AAMA specifications
PVDF Resin BRANDS
FEVE Resin BRANDS
Fluorocarbon Polymers Resins
Based on Hyper Durable Technology –
fluorocarbon chemistry applied to a powder
coating to give the ultimate in exterior durability
• The carbon/fluorine bond is one of the
strongest molecular bonds
• FEVE is a true powder coating alternative to
liquid PVDF
Powder Coatings
• A dry powder paint with no solvents or VOCs
• Applied by industrial coaters to aluminum
• Gives outstanding weather stability combined
with high chemical resistance and low soiling
• Attractive finish available in many colors and
metallic effects
• Meets the world’s toughest quality standards
FEVE in Powder Coatings
ApplicationsArchitectural Culture
& MarketDurability Standards
Resins Color Characteristics
Examples
Coatings are available in a wide
selection of colors. But as
durability specification increases,
the range of colors reduces, so
does the gloss selection.
• AAMA2603 – Maximum
Colors Available
• AAMA2604 – Reduced
Selection
• AAMA2605 – Limited to
Neutral Colors
Key is to achieve a good
combination of resin and color
selection to extend durability.
Color Selection
Delta E = 5
Looks like this
ApplicationsArchitectural Culture
& MarketDurability Standards
Resins Color
Characteristics• Coats
• Metallic
• Corrosion
• VOC
Examples
Coatings Compared
Standard
Polyester
Powder
Superdurable
Polyester
Powder
FEVE
Powder
PVDF
Liquid
Meets AAMA 2603 AAMA 2604 AAMA 2605 AAMA 2605
Coats 1 1 1 2-4
Color Range ***** **** Not very bright colors
Metallic Range *** *** *** *****
Toughness *** *** ** *
Solvents VOC 0 0 0 Up to 65%
Chem. resistance Moderate Moderate Excellent Excellent
Dirt Resistance Moderate Moderate Excellent Excellent
Corrosion res. Low Moderate Moderate Moderate
Single Coat vs. Multiple Coats
Powder Liquid
• Single coat (monolithic properties)
• Electrostatic application equipment
• 2.5 to 4 mils DFT
• High Transfer Capabilities (zero waste)
• Multiple coat (depth appearance)
• Normal application equipment
• 1.3 to 1.8 mils DFT
• Lower Efficiency (% of material utilized)
Metallic Color (90° vs. Flop)
Mica / Metallic Flake
• Until recently, the appearance of
metallic finishes in powder couldn’t
reach the depth and brightness of
liquid PVDF.
• Innovation lead to broad range of
bright, metallic and matt finishes.
• Liquid and Powders offer different
appearances:
• View at arm’s length, holding
panels at a 90° angle, with sun
shining over your shoulder (or view
in D65 light booth, arm’s length,
holding panels at a 90°)
Environmental VOC
• Powder has no VOCs, thus it results in fewer emissions.
• In liquid coatings, VOCs are destroyed in most production in USA, thus eliminating 95% of emissions
Category Corrosivity Examples (outdoor)
C1 Very lowDry or cold zone, atmospheric environment with very low pollution and time of
wetness, e.g. certain deserts, Central Arctic/Antarctica
C2 LowTemperate zone, atmospheric environment with low pollution
(SO2: <5 μg/m3) e.g. rural areas.
Dry or cold zone with short time of wetness
C3 Medium
Temperate zone, atmospheric environment with medium pollution
(SO2: 5 μg/m3 to 30 μg/m3) or some effect of chlorides, e.g. urban areas,
coastal areas with low deposition of chlorides
Subtropical and tropical zone, atmosphere with low pollution
C4 High
Temperate zone, atmospheric environment with high pollution
(SO2: 30 μg/m3 to 90 μg/m3) or substantial effect of chlorides, e.g. polluted
urban areas, industrial areas, coastal areas without spray of salt water or,
exposure to strong effect of de-icing salts Subtropical and tropical zone,
atmosphere with medium pollution
*C5Very
high
Temperate and subtropical zone, atmospheric environment with very high
pollution (SO2: 90 μg/m3 to 250 μg/m3) and/or significant effect of chlorides, e.g.
industrial areas, coastal areas, sheltered positions on coastline
*CX Extreme
Subtropical and tropical zone (very high time of wetness), atmospheric
environment with very high pollution (SO2: higher than 250 μg/m3) including
accompanying and production factors and/or strong effect of chlorides, e.g.
extreme industrial areas, coastal and offshore areas, occasional contact with salt
spray
Other Considerations: Corrosion
ApplicationsArchitectural Culture
& MarketDurability Standards
Resins Color
Characteristics:
• Multiple vs. Single Coat
• Metallic Flop (Directionality)
• VOC
Examples
• Mostly used for interior applications
• Also used in exterior areas with limited exposure to UV
• 1 year Florida color retention (per AAMA)
• Many color options available for powder and liquid coatings.
AAMA 2603 / Qualicoat class I
Torre el Faro, Argentina
AAMA 2604 / Qualicoat Class IIHigher durability standard than AAMA 2603
5 year Florida color & gloss retention (per AAMA)
Used for exterior applications Globally for over 30 years
Mission Viejo Hospital, California (1991) The Shard, UK
Hudson Yards, NYC
Exterior applications on prestigious buildings or in
extremely high weatherable areas
Highest durability standard in the market. 10 year
Florida color & gloss retention (per AAMA).
Reduced color and gloss selection
AAMA 2605 / Qualicoat class III
30 Hudson
10 Hudson 35 Hudson
50 Hudson
Fosters
Business unit | Footer33One Vanderbilt
425 Park NYC
515 W 18th St. NYC
Uber HQ, San Francisco CA
Sublimation Technology -Wood Imitation
• Project : Opera House (Dubai)
• Product : Interpon D2525 STF Textured
• Consultant: ATKINS
• Fabricator: Al Ghurair
• Applicator : Joseph Industries
Relative Photo
Project : Jabal Omar
Product : Ral 1035 Matt D3020 – hyper durable + YY217E
Location : K.S.A.
Consultant : Alumco
Applicator : Alumetal/ Al Taseeir/ KAFCO
Fabricator : Profil System
Anodized
Project : Royal Palm Atlantis Resort
Product : YW2834 + 3 terracotta shades
Location : Dubai UAE
Consultant : KPF - New York
Relative Photo
Terracotta appearance
Example: Monumental project in Boston:
Determine parts to be coated
Determine color in liquid / powder / touch up
Determine DURABILITYAAMA 2605 or equivalentFLUOROPOLYMERS: PVDF, FEVE or equivalent
Determine specialized tests: temperature, deicing, salts, extended corrosion
Determine corrosion environment
Determine environmental requirements
REQUIRE AAMA CERTIFIED APPLICATORS
Still in doubt?
Ask your trusted coatings manufacturer for a sample specification.
Conclusion: How to Specify
Powder or Liquid technology
Describe the way the paint was applied
• Means & Methods of Construction
• Either can perform well depending on the performance required
Factors that will drive one technology vs. another:
• Owner / Curtain Wall / Building Components / Consultants
• Coil, Extrusion, Elevator, Handrails,
• Region of the project and application
• Europe (Powder), US (Both), China (Both), etc.
• Transportation, Installation & Maintenance factors
• Environmental Factors
Conclusion: Architectural Coatings
Thank you
Questions?