Atlas CHEMPRUF 141

CHEMPRUF 141 is a novolac vinyl ester glass flake coating system which may be brush, roller, or spray applied.

CHEMPRUF 141 is a novolac vinyl ester glass flake coating system which may be brush, roller or spray applied. The random layers of glass flake reinforce the coating for resistance to physical stress attributable to thermal cycling. CHEMPRUF 141 provides a durable coating that protects concrete and steel surfaces from corrosion. CHEMPRUF 141 is designed for primary or secondary containment applications for tanks, containment dikes, structural steel and floors.

The Chempruf 141 (link) system consists of:

  • Chempruf VE Primer
  • Chempruf 141

Download Data Sheet.


FAQ’s About Chempruf 141

Q: What colors are available?
A: Chempruf 141 is available in white and gray

Q: What does Chempruf 141 consist of?
A: The system consists of:
• Chempruf VE Primer, a two-component, brush, roller or spray applied penetrating primer.
• Chempruf 141, a two-component, glass flake filled novolac vinyl ester resin coating

Q: How do I prepare the substrate?
A: The substrate must be structurally sound, clean, dry and free of all contaminants, such as sealers, curing compounds, coatings, oil, dirt, dust, and water. Previously applied coatings or paint must be removed.
Concrete: The prepared concrete substrate shall have a minimum tensile strength of 250 psi.
(1.72 MPa). Concrete surface must be sufficiently cured and comply with moisture testing as prescribed by ACI Test Method 515 R-16 “Dryness of Surface”. Concrete surfaces should be grit blasted to a finish similar to the profile of 100 to 120 grit sandpaper.
Carbon Steel: Metal surfaces should be grit blasted to a SSPC-SP5 or NACE #1 white metal blast cleaned surface finish. Profile height must be 3 (0.076 mm.) to 4 mils (0.102 mm.).

Q: What is the best temperature range for the application of Atlas Chempruf 141?
A: Store all materials referred to in this Data Sheet at 70°F (21°C) to 80°F (27°C) for 24 hours prior to use. Minimum temperature for installation is 65°F (18°C). Do not apply when the relative humidity is greater than 75% or the substrate temperature is less than 5oF (3oC) above the dew point.

Q: How do I apply Atlas Chempruf 141?
1. Brush, roll or spray apply Chempruf VE Primer.
2. Apply one coat of Chempruf 141 by brush, roller or sprayer to a WFT of 10 mil (0.25 mm.) to 25 mil (0.64 mm.). Allow hardening.
3. Apply a second and additional coats of Chempruf 141 as described in Step (2.). More than two coats may be required based on the method of application and system thickness requirements.

Application Horizontal Vertical
Brush 10 to 20 mils 10 to 20 mils
Roller 10 to 20 mils 8 to 15 mils
Spray 10 to 20 mils 10 to 25 mils

Protect uncured primer and Chempruf 141 from moisture contamination until minimum cure time is attained.

Q: How do I clean my tools and equipment?
A: Steel wool, soap and warm water will remove the materials referred to in this Data Sheet from mixing tools and equipment if cleaning is done immediately after use. Solvents, such as methyl ethyl ketone, toluene or xylene, will have to be used after the material has begun to harden. Fully hardened material will have to be removed by mechanical means.

Q: Are there technical service representatives available?
A: ATLAS maintains a staff of Technical Service Representatives who are available to assist you with the use of ATLAS products.