approved top coatings

8/18/2019 Approved Top Coatings

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For galvanized surface without old paint film or red

rust, use hand tools to remove white rust and

impurities.

The right side of the steel beam is prepped and the

surface is roughened for better adhesion

Coated Surface

For surfaces coated by other paints, use power

tools to remove old paint film and other impurities.

The old film is removed to show a clean steel

surface.

ON-SITE PREPARATION FACTORY PREPARATON

Hand preparation tool:

e.g.) abrasive scrubber

Galvanized Surface

Factory preparation:

e.g.) blasting machine

Rusted Surface

For surfaces covered by red rust, use power tools

to remove red rust along with other impurities.

Red rust is perfectly removed to show a clean steel

surface.

Power preparation tools.

e.g.) disc sander

The impurites are all removed to show a clean steel

surface.

ROVAL User Guide

STEP1: Surface Preparation

ANY Surface

For steel structures covered by mil scale and other

impurites, use a blasting machine to remove.



Coat Amount used*

(m²)ThicknessCoat

Amount used*

(m²)Thickness Coat

650g Dry 80µm

*30% added as a loss on application.

325g Dry 40µm

325g Dry 40µm

*20% added as a loss on application. *20% added as a loss on application.

1st

2nd

TotalTotal 600g Dry 80µm

1st

Total

Amount used*

(m²)Thickness

600g Dry 80µm

2st 300g Dry 40µm

300g Dry 40µm

2st 300g

Dry 40µm

Dry 40µm

1st 300g

Brush Roller Conventional Spray Airless Spray

Soft brush (e.g. varnish brush) Roller (bristle length: 12~13mm)

Tip orifice: 1.5-

2.0mm

Air pressure:

0.29MPa

Dilution: 5% by

weight

2. Make sure that there is no sediment at the

bottom of the container. Agitate frequently.

STEP3: Application

Pump ratio: 30:1Tip orifice:

0.48-

0.63mm

Air pressure:

10MPa

Dilution: not

required

STEP2: Agitation

1. Agitate sufficiently to obtain uniform

density with a power agitator.



A primer for galvanized surfaces must be applied between ROVAL

and this paint.

Can be applied directly on ROVAL film.

ROVAL film will be dissolved by a friction of brushing. Application

must be done quickly. Conventional/airless spraying is

recommended.

Compatible

Compatible

Compatible

Compatible

Compatible

Incompatible

Incompatible

Incompatible

Type of Resin Compatibility with ROVAL TIPS for application

Chlorinated rubber paint Compatible

Vinyl chloride paint Compatible


*Top-coat paint must be applied after 24-hour cure time of ROVAL film.



Tar-Free epoxy paint

Before applying top-coat paint, ask a manufacturer whether it is compatible with galvanized surfaces.

Incompatible

Acrylic paint

Epoxy paint

Acrylic spray

Alkyd paint

Phthalic acid paint

Phenol paint

STEP4: Optional Top-coat

Urethane paint

Fluorine paint

Acrylic emulsion paint

Acrylic urethane spray

Compatible

Incompatible



Incompatiblemo e pa nt

EXAMPLES

High structures Pipelines

approved top coatings

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