Water Tank Coating Systems that

Extend Service Life

Reflecting the revised AWWA D102 Standard

Our Agenda:

• Discuss AWWA RTG

• Discuss Water-borne

Coatings / Coating

Systems

• Discuss 100% Solids

Coatings / Coating

Systems

#1 - AWWA D102 RTG

• Revise and Update

Existing Standard

• Discuss changes to

improve the Standard

• Have a “3 year

revision” goal

• Added 2 new coating systems in 2006 (ICS No. 4 & OCS No. 4)

• Added new Exterior System in 2011: OCS No. 7

• Revised Interior System in 2011: ICS No. 3

Remember:

• “An AWWA Standard is not a

specification, nor [does it] certify

products.”

AWWA Manufacturers Advisory Council

• What you desire must be specified

#2 - WB Acrylic System

• “Acrylic emulsion coatings generally dry

faster and provide improved color and

gloss retention, when compared to alkyd

enamels.”

• These systems include WB Dryfall coatings (for repaint projects in crowded neighborhoods, for example)

Outside Coating System No. 3

• AWWA D102 Revision Task Group has revised the acrylic exterior coating system of the D102 (Tank) Standard

• OCS No. 3: OZ Primer 2.0 mils WB Acrylic Topcoat 2.0 mils WB Acrylic Topcoat 2.0 mils (“Dryfall” versions acceptable)

Proprietary Breakthrough:

• Pro-Cryl/Sher-Cryl (1st-of-its-kind cross-linking

acrylic. For tank & Logo.)

• Sher-Clear (1st-of-its-kind UV-resistant

Clear Topcoat to extend Color

& Gloss up to 5X)

• Fast Clad HB Acrylic (1st-of-its-kind cross-linking

acrylic. 2 – 3 coats DFT in 1)

“Ambient Cure” WB Acrylics

O2

Polymer chains after application

before ambient cure. Polymer chains after branching

at ambient temperature in the

presence of atmospheric oxygen.

Sher-Cryl

Pro-Cryl

Sher-Clear

Fast Clad™ HB Acrylic

• 5.0 - 8.0 mils DFT in ONE COAT

• Apply directly to OZ / IOZ & other primers

• High build eliminates multiple coats*

without eliminating protection

• *Reduces labor expense

Why Important?

• Our cross-linking, “ambient cure” acrylics

extend Service Life because they resist

exterior deterioration.

• When applied over zinc-rich primers (OCS

No. 3), they also provide extended

corrosion protection!

WB Epoxy / Urethane System

• AWWA D102 Revision Task Group has introduced an E / E / U waterborne exterior coating system to the D102 Standard.

• OCS No. 7: WB Epoxy Primer 2.0 mils WB Epoxy Intermediate 2.0 mils WB Urethane Topcoat 2.0 mils

Outside Coating System No. 7

• Harmless water is the

main “solvent”

• WB Acrolon 100 exceeds

the color & gloss retention

of standard SB exterior

systems

• Part of SW’s

INFINITANK™

program!

Advantages of Polyurethanes

• Color & Gloss retention

– Some have graffiti resistance

Primer

Topcoat

Question: If that’s true, why do some tanks

coated with SB urethanes look

so bad?

Answer:

It’s because urethanes are not all

created “equal”!

Y2000 Weathering Study:

• The Sherwin-Williams Company has proven and

quantified that Clear Coats will extend the life of

urethane coatings TWO to FIVE times longer than

“standard” urethanes because they minimize the

damaging effects of the sun’s UV light. Consider

them for your tank logo.

• But contractors have discovered that Clear Coats

may be difficult to apply.

SW Research Continued …

• How to specify UV-resistant exterior tank

coatings reflecting the AWWA D102

Standard?

• Are fluorourethanes (described in OCS No.

4) the ONLY coating type that prevents

color & gloss deterioration?

4G Urethanes vs Fluorourethanes

• Another Protective Coatings industry

first-of-its-kind quantitative test of

urethanes, urethanes with clear coat,

siloxanes, and fluorourethanes.

• Fully funded by The Sherwin-Williams

Company

Results:

• Quantified the exceptional color & gloss

retention of WB Acrolon 100

WTP Tanks (shop-primed)

WTP Tanks (field-painting)

WTP Tanks (finished!)

Why Important?

• WB Acrolon 100 extends Service Life

because it has been formulated with

premium ingredients not found in other

exterior urethanes.

• Now part of SW’s INFINITANK™

Tank Preservation Program with a ZRP to

extend corrosion protection, also.

#3 - 100% Solids System

• AWWA D102 Revision Task Group has revised the epoxy interior coating system of the D102 (Tank) Standard to the following:

• ICS No. 3: Primer (optional) 1.0 mil Epoxy Topcoat 20.0 mils

ICS No. 3: SherPlate PW™

• Exceeds DFT of 3-

coat ICS No. 2 in

ONE COAT saving

labor $$

• SherPlate PW™ is

Edge-Retentive [Mil-PRF-23236 w/QPL number]

• 24-hour Return-to-

Service

Without QPL Edge Retention it’s just “marketing”

ICS No. 3 can protect YOUR tank!

One of America’s largest steel water tank – 34,000,000 gallons!

Why Important?

• SherPlate PW™ epoxy extends Service Life

because it provides edge-retentive, high

build protection on tank interiors … with

award-winning OAP Opti-Check®

OAP: Optically Active Pigments

Areas highlighted

show incomplete

coverage of topcoat

Additional SW Tank Introductions:

• Hi-Solids Polyurethane MR

• PAE – Fast Clad

™ Urethane

Questions?