System Overview

The Koolnar™ PVDF coil coating system manufactured and distributed globally by Continental Coatings Inc. and Yung Chi Paint and Varnish Manufacturing Company Ltd., is a Premium 70% PVDF coil coating system engineered for monumental building product applications and severe exterior environments that require long life and extended warranty coverage. The Koolnar™ system uses licensed Kynar®and Hylar®PVDF Fluoropolymer technology which is ultra resistant to U.V. radiation and natural weathering. Koolnar™ uses only the highest quality long lasting ceramic and metallic pigmentation to insure optimal exterior color fastness and longevity. This system is also available in multiple coats and various specialty high build systems. Koolnar™ may be applied over the Universal PU-11 High Molecular Weight Urethane Primer or PU-30 High-build Urethane primer systems for extreme environment and extra long service life warranted building product applications.

Application Parameters

The Koolnar™ system is designed for trouble free coil coating line application and has been run for well over 2 decades on new and old coil lines around the world. Standard topcoat DFT is .70-.80 mils, which allows for optimal application consistency, color stability and exterior performance. Koolnar™ was formulated to provide improved stain resistance and cleanability as well as scratch resistance and surface toughness. Superior primer corrosion resistance and substrate adhesion along with chemically enhanced topcoat intercoat adhesion greatly minimize field scratch and wet stack storage complaints, and handling, transporting, and storage related claims.

Commercial Uses

The Koolnar™ system can be formulated in standard, medium, as well as low gloss/low sheen finishes and supplied in limited colors. This premium coating supports an extended warranty and can be applied to a variety of adequately cleaned and treated metal substrates including: Hot Dipped Galvanized, ZnAl, Galfan®, ZAM®, Aluminum, and Stainless Steels. Koolnar™ is formulated with IR Reflective COOL ROOF ceramic pigment technology and can be designed to meet and exceed U.S. Energy Star®requirements. It is most ideal for high-end construction related products like composite panels, high U.V. exposure roofing, and acidic/alkaline corrosive environments like industrial manufacturing facilities and power plants.





Application Method

Reverse Roll Coat


Aluminum, HDG, Galvalume®, Galfan®, ZAM®


Standard clean and treat

Chrome or approved non-chrome

ASTM D 4138

Dry Film Thickness

Top coat: 0.7 to 0.8 mils

Primer: 0.2 to 0.3 mils

Total system: 0.9 to 1.1 mils

ASTM D 4212

Viscosity (No. 2 Zahn cup)

25 to 45 seconds

ASTM D 1475

Weight Per Gallon

9.0 to 12.0 pounds per gallon

ASTM D 2697

Solids Per Volume

35 to 42%

ASTM D 2369

Solids Per Weight

45 to 65%

Reducing Thinner

Reducing Solvent

Isophorone / DBE

ASTM D 3960

VOC (Theoretical)

4.0 to 4.8 pounds per gallon

Clean-up Solvent


Peak Metal Temperature

465 to 485 F





ASTM D 523

Specular Gloss at 60

6 to 35

ASTM D 3363

Pencil Hardness

F to 2H

ASTM D 4145


1T to 4T with no loss of adhesion

ASTM D 3359

Cross Hatch Adhesion

No loss of adhesion

ASTM D 2794

Reverse Impact

Galvalume or HDG: 3x metal thickness inch-pounds, no loss of adhesion

Aluminum: 1.5x metal thickness inch-pounds, no loss of


ASTM D 2247

Humidity Resistance 1,000 hrs. Humidity Resistance 3,000 hrs.

Galvalume or HDG: Creep from scribe < 1/8 inch (3mm), no field blistering

Aluminum: Creep from scribe < Creep from scribe

< 1/8 inch (3mm), no field blistering

ASTM B 117

Salt Spray Resistance 1,000 hrs. Salt Spray Resistance 3,000 hrs.

Galvalume or HDG: No Blistering Aluminum: No Blistering

ASTM D 2244

ASTM D 4214

South Florida Exposure

Color: No more than 5 Hunter (E) units

Chalk: Rating no less than 8

ASTM D 870

Water Immersion 100 F 500 hrs.

No Field blisters with minimal color change

ASTM D 1308

Chemical Resistance (15 mins.)

No significant color change


Flame Spread Classification

Class I or A

ASTM D 968

Abrasion Resistance

Total Sand = 65 +/- 5 (Dft dependent)