E374 Clear Satin Polyurethane | Non-Yellowing | Vertical Concrete & Steel Walls | Light Foot Traffic Floors

CURE SCHEDULE

Times may be longer for thickness above 2.5 dry mils.  For safety and proper product curing, good ventilation is necessary when painting indoors or in confined areas.  Be sure the batch numbers are all the same to provide  uniform color.  Heaters that emit carbon dioxide and carbon monoxide can cause the coating to yellow.

APPLICATION TEMPERATURE: 50ºF – 120ºF Do not apply to surfaces below 50°F or above 120°F. Do not apply over dew or frost. The surface temperature should be at least 5°F above the dew point.

CHEMICAL RESISTANCE, SPLASH & SPILLAGE

(spill time for 72 hours contact with surface)   Not recommended for Immersion Conditions.

MIXING AND APPLICATION INSTRUCTIONS

SURFACE PREPARATION  E370P Polyurethane Enamel is a top coat only and is not recommended to be used directly over unprimed surfaces. Apply over appropriate primers or intermediate coats. Surfaces must be free from all oil, grease, dirt, water, or other foreign matter.  E374 Polyurethane is not recommended for immersion service.

Steel: All surface contamination, such as dirt, dust, grease, oil and other deposits must be removed prior to abrasive blast cleaning. Solvent cleaning as outlined in Steel Structures Painting Council’s Specification SSPC-SPI should be used to remove all foreign matter. If previous service has left surface deposits of chemicals, they also must be removed by pressure washing and followed by a thorough water rinsing.

Remove all rust, mill scale, loose paint and any previous existing coatings by dry abrasive blasting all steel surfaces before applying the coating system.

Recommended primers for the E374 are E15M Chemical Mastic, PC-2.8 Epoxy Coating, E517 Epoxy Mastic,  E100 Aluminum Polyurethane and PC-110 Epoxy Primer. Follow the recommended recoat time per label instructions. In some cases an intermediate coat may need to be applied when a 3 coat system is necessary or desired.

Galvanized Steel/Aluminum and Non-Ferous Metals: Degrease and chemically clean surfaces in accordance with SSPC-SP1 Solvent Cleaning Specification. The surface should be sweep blasted and primed with E15M, E100 Aluminum Polyurethane or PC-110 primer. Recoat time is minimum 5-6 hours for PC-110, 8 hours for E15M and E100 is 2-6 hours at 75 before applying E374 High Build Polyurethane.

Zinc Rich Primer Sand blast to a SSPC-SP10 “near white” blast or SSPC-SP6 “commercial” blast. Apply MCU-104 at 2.5 to 3.5 mil DFT. Allow a minimum of 4-5 hours recoat time @ 75°F and 50% R.H before applying E374 Polyurethane. For best results, apply an intermediate coat of PC-110, E15M or PC-2.8 Epoxy

Marginally Prepared Steel Surfaces:

Degrease and chemically clean surfaces in accordance to SSPC-SP1 Solvent Cleaning spec to remove all oils, grease, and other soluble contaminants.  If steel is chemically contaminated (e.g., acid, caustic, or salts), high pressure water cleaning at a minimum of 5,000 psi is recommended to remove chemicals.  The pH of steel should be tested to ensure that surface of steel is between 7.0-8.5 pH.  After the above process has been completed, power tool cleaning is to be done.  Power tool clean to remove all mill scale, loose rust, loose paint and other detrimental foreign matter.  Apply two coats of our E100 Aluminum Polyurethane at 2-3 mils DFT.  Minimum recoat time for E100 is two (2) hours, maximum recoat time is six (6) hours at 75°F and 50% relative humidity.  E15M Chemical Mastic or PC-636 Low Temp.  Epoxy may also be used as a primer under the E374 High Build Polyurethane on marginally prepared surfaces.

Concrete/Masonry Surfaces:

New concrete must be cured at least a minimum of twenty-eight (28) days before applying a coating.  All laitance, efflorescence, chemical contaminants, grease, oil, and other foreign material must be removed.  The  prepared surface must be clean, dry, and structurally sound.  Accepted methods of surface preparation are  dry abrasive blast, wet abrasive blast, vacuum shot blast, high pressure water blast, scarifying, scabbling and acid etch/water rinse.

Voids, cavities, spalled areas, and other structural defects should be trowel-grouted smooth with CF- 615  Epoxy Crack Filler or PC-1000 Epoxy Mortar.  Rub smooth with a hand grinding stone any burrs or high protruding aggregate left uneven by troweling.

Consult Gulf Coast Paint regarding the testing of the concrete for proper pH, vapor barrier testing and surface porosity.

Acceptable primers for the E374 Polyurethane are PC-149, E155, and PC-1703 Epoxy Concrete Primers. An Epoxy Intermediate coat may be needed if higher film build is necessary.   Products such as E15M, PC-636, PC-275, E517 or 100% solids materials such as PC-1803 or PC-1850 can be used.   E374 is not designed for heavy traffic or vehicle traffic floor areas.  Use CT-332 Clear or CT-352 Pigmented Polyester Polyurethane for maximum floor protection.

Block Walls

Block walls should be free of salts, soap film, oil, grease, dirt, dust and other contaminants and foreign material that will interfere with adhesion of coating system.  The block must be dry and free of moisture.  Apply Gulf Coat Paint’s PC-145 Block Filler at a rate of 75-100 square feet per gallon. Use a 3/4” – 1-1/4″  roller cover.  Apply PC-145 Epoxy in multiple directions for uniform filling of block.  Block walls should be evenly and uniformly filled.  Allow PC-145 Block Filler to cure for 24-72 hours before applying an Epoxy Intermediate Coat, e.g., PC-110, E15M, or E517.

MIXING INSTRUCTIONS

Stir each component to a uniform consistency, using a slow speed explosion proof variable speed drill with a Jiffy mixer.  Do not vary proportions.  E374 is prepared by mixing 4 parts Base (Part A) to 1 part Hardener (Part B) with the power mixer.  E374 may be thinned up to 20% with SU-94 for spray applications (can substitute thinning up to 5% – 10% with a 100% Xylene).

For best mixing results and proper blending of parts A and B, recommend a Jiffy Mixer style drill mixer.

NOTE:  Always wear protective gloves and clothing while mixing and applying E374.  Do not get on skin.

APPLICATION PROCEDURE

Best method of application is conventional or airless spray use up to 10% Thinner.  Flush equipment thoroughly with MEK solvent before using and use a moisture trap on the air supply.

FOR SPRAY APPLICATION (Airless or Conventional)

• When spraying, use a 50% overlapping crosshatch pattern to minimize the occurrence of pinholes.  Do not apply to surfaces below 50°F or above 120°F.   Do not apply over dew or frost.  The surface temperature should be at least 5°F above the dew point.  Roller – Thin up to 10% by volume with SU-93  (100% Xylene) Reducer, depending on temperature.  Use a ¼” – 3/8” short nap phenolic core, shed resistant roller cover.  Roll in the same direction always keeping a wet edge.  Do not over roll product.  Brush – Use pure bristle brush.

CAUTION DANGER

E374 is flammable. Keep away from all sources of ignition during mixing, application and cure. Contains Aliphatic Polyisocyanates, N-Butyl Acetate, Xylene, MEK, Ester Solvent and PM Acetate. The mixtures of BASE (Part A) with HARDENER (Part B) can cause eye and skin burns as well as allergic reactions. The use of goggles, fresh air masks or NIOSH approved respirators, protective skin cream and protective clothing is a recommended standard practice when spraying. This product is sold without warranty as to performance expressed or implied. Users are urged to make their own tests to determine the suitability for their particular conditions.

LIMITATIONS:

• Do not apply over frost surfaces or extremely high humidity conditions.
• Do not apply over expansion joints.
• Do not apply if the surface temperature is within 5° of the dew point.
• Always apply a test patch of E374 for owners approval prior to application
• Partially used containers must be reclosed tightly to prevent moisture in air from reacting with material and forming a tough skin.  Skin can be removed and remaining material used.  Be sure to stir.

SEE MATERIAL SAFETY DATA SHEET FOR FULL SAFETY PRECAUTIONS.  FOR PROFESSIONAL AND INDUSTRIAL USE ONLY  KEEP AWAY FROM CHILDREN.  NOT FOR RESIDENTIAL USE NOTICE TO BUYER: DISCLAIMER OF WARRANTIES AND LIMITATIONS ON OUR LIABILITY We warrant that our products are manufactured to strict quality assurance specifications and that the information supplied by us is accurate to the best of our knowledge. Such information supplied about our products is not a representation or a warranty. It is supplied on the condition that you shall make your own tests to determine the suitability of our product for your particular purpose. Any use or application other than recommended herein is the sole responsibility of the user. Listed physical properties are typical and should not be construed as specifications. NO WARRANTY IS MADE, EXPRESSED OR IMPLIED, REGARDING SUCH OTHER INFORMATION, THE DATA ON WHICH IT IS BASED, OR THE RESULTS YOU WILL OBTAIN FROM ITS USE. N0 WARRANTY IS MADE, EXPRESSED OR IMPLIED, THAT OUR PRODUCT SHALL BE MERCHANTABLE OR THAT OUR PRODUCT SHALL BE FIT FOR ANY PARTICULAR PURPOSE. NO WARRANTY IS MADE THAT THE USE OF SUCH INFORMATION OR OUR PRODUCT WILL NOT INFRINGE UPON ANY PATENT. We shall have no liability for incidental or consequential damages, direct or indirect. Our liability is limited to the net selling price of our product or the replacement of our product, at our option. Acceptance of delivery of our product means that you have accepted the terms of this warranty whether or not purchase orders or other documents state terms that vary from this warranty. No representative is authorized to make any representation or warranty or assume any other liability on our behalf with any sale of our products. Our products contain chemicals that may CAUSE SERIOUS PHYSICAL INJURY. BEFORE USING, READ THE SAFETY DATA SHEET AND FOLLOW THE PRECAUTIONS TO PREVENT BODILY HARM.