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  • Overview
  • Specs
  • Coverage Rate
  • Cure
  • Chemical
  • Application

NE257P Novolac Epoxy Primer Acid Chemical Resistant

NE257P is a two component novolac epoxy primer with exceptional resistance to a variety of chemicals, solvents and acids designed for application as part of a protective coating system where splash and spills of acids, chemicals, and solvents occur.

NP257P offers high solids, good substrate penetration and low odor. The NE257P primer reduces air release generation from the substrate when applying higher solids novolac topcoats such as NE253 and NE253SL. Recommended for priming concrete and cement substrates prior to applying other novolac topcoats.  This will result in fewer surface imperfections in high build and self leveling type coating.

Available in 1 quart kit, 3/4 gallon kit, 1.5 gallon kit, 3 gallon and 15 gallon kits and three colors: light gray, medium gray and tile red options.

PRIMER: None required

TOPCOAT: Many novolac products are suitable including our NE253 Novolac Epoxy and NE253SL Novolac Epoxy Slurry

 Where is the NE257P used?

  • Chemical process plants
  • Pulp and paper mills
  • Food processing
  • Gas processing
  • Power generation
  • Sewage and water treatment
  • Battery charging stations
  • Mining industry
  • Manufacturing plants
  • Chemical storage areas
  • Areas subject to chemical exposure
  • Warehouse loading dock areas
  • Concrete and brick surfaces subject to chemical spill and splash conditions

Why NE257P Novolac Epoxy Primer?

  • Excellent primer companion to our NE253 and NE253SL Novolac Epoxy topcoats
  • Outstanding Spill and Splash Acid, Solvent, Chemical surface protection
  • Resists wide range of chemicals, solvents and acids
  • Excellent adhesion 375 psi
  • Long working time with 1 to 3 hour POT life
  • Selection of 3 color options


Solids By Weight 85%   By Volume 80%
VOC 186 g/L mixed
Colors light gray, medium gray, tile red
Recommended Film Thickness 5-6 mils per coat wet thickness (yiels 4-5 mils dry)
Coverage per Gallon 267 to 320 square feet @5-6 mils wet thickness
Packaging 1 quart kit, 3/4 gallon kit, 1.5 gallon kit, 3 gallon kit and 15 gallon kit
Mix Ratio (2:1 mix ratio) 2 gallons part A to 1 gallons part B
Shelf Life 1 year in unopened container
Finish Satin-Gloss (>20 at 60 degrees @Erichsen glossmeter)
Abrasion Resistance Taber abraser CS-17 calibrase wheel with 1000 gram total load and 500 cycles= 26.1 mg loss
Flexibility No cracks on a 1/8″ mandrel
Impact Resistance Gardner Impact, direct = 50 in lb (passed)
Viscosity Mixed = 250-500 cps (typical)


Coverage Per Gallon 267 To 320 Square Feet @5-6 Mils Wet Thickness


Pot Life – (1-1/2 gallon volume) 1-3 hours
Tack free (dry to touch) 4-7 hours
Recoat or topcoat 7 – 10 hours
Light foot traffic 12-24 hours
Full cure (heavy traffic) 2-7 days

APPLICATION TEMPERATURE: 60-90 degrees F with relative humidity below 90%


 Xylene D
 1.1.1 trichlorethane C
Methyl Alcohol C
Toluene D
 10% sodium hydroxide E
 50% sodium hydroxide E
 10% sulfuric acid E
 10% hydrochloric acid C
20% nitric acid D
Ethylene glycol E
Acetic acid 5% D
Gasoline D

Rating key: A – not recommended, B – 2 hour term splash spill, C – 8 hour term splash spill, D – 72 hour immersion, E – long term immersion.


PRODUCT STORAGE: Store product in an area so as to bring the material room temperature before using.  Continuous storage should be between 60 and 90 degree F.  Low temperatures or great temperature fluctuations may cause product crystallization.

SURFACE PREPARATION: The most suitable surface preparation would be a fine brush blast (shot blast) to remove all laitance and provide a suitable profile. All dirt, foreign contaminants, oil and laitance must be removed to assure a trouble free bond to the substrate. A test should be made to determine that the concrete is dry; this can be done by placing a 4’X4’ plastic sheet on the substrate and taping down the edges. If after 24 hours, the substrate is still dry below the plastic sheet, then the substrate is dry enough to start coating. The plastic sheet testing is also a good method to determine if any hydrostatic pressure problems exist that may later cause disbonding.

PRODUCT MIXING: Each 3 gallon kit of this product has a mix ratio of 2 gallons Part A to 1 gallon B by volume. Standard packages are in pre-measured kits and should be mixed as supplied in the kit.  Before the two components are mixed together, mix the part A and part B separately to insure they are uniform before they are combined.  After the two parts are combined, mix well with slow speed mixing equipment (recommend jiffy mixer) until the material is thoroughly mixed and streak free. This material has a high viscosity – mix well.  Improper mixing may result in product failure. For best mixing results and proper blending of parts A and B, recommend a Jiffy Mixer style drill mixer.

Use of an improper drill mixer can result in streaking of the color because the pigment has not been thoroughly blended.  It can also create curing problems if the hardener also called activator (Part B) is not thoroughly blended with the resin (Part A) which can cause some areas on your floor to remain soft and not harden properly.  DO NOT USE A PAINT MIXER.  Many mixing problems described above can be traced back to using a paint mixer..  DO NOT HAND MIX as this approach can also result in the same problems as using a paint mixer.

PRODUCT APPLICATION: The mixed material can be applied by brush or roller. Maintain temperatures and humidity within the recommended ranges during the application and curing process. Improper mixing or applying the product too thick can result in product failure.

RECOAT OR TOPCOATING:  This product is a primer, we recommend a topcoat. When you recoat or topcoat this product, you must first be sure that all of the solvents have evaporated from the coating during the curing process.  It is best to test the coating before recoating or topcoating. This can be done by pressing on the coating with your thumb to verify that no fingerprint impression is left. If no impression is created, then the recoat or topcoat can be started. Always remember that colder temperatures will require more cure time for the product before recoating or topcoating can commence. Before recoating or topcoating, check the coating to insure no epoxy blushes were developed (a whitish, greasy film, or deglossing.) If a blush is present, it can be removed with any standard type detergent cleaner prior to topcoating or recoating. The primary choice of topcoat will be other novolac epoxy coatings. Multiple coats of this product are suitable prior to topcoating.

CLEANUP: Use xylol.

FLOOR CLEANING: Caution!  Some cleaners may affect the color of the floor installed. Test each cleaner in a small area, utilizing your cleaning technique.  If no ill effects are noted, you can continue to clean with the product and process tested.

RESTRICTIONS: Restrict the use of the floor to light traffic and non-harsh chemicals until the coating is fully cured (see technical data under full cure).  It is best to let the floor remain dry for the full cure cycle. Dependent on actual complete system application, surface may be slippery, especially when wet or contaminated; keep surface clean and dry.


  • Colors may be affected by high humidity, low temperatures or chemical exposure.
  • For best results use a 3/8” nap roller.
  • Substrate temperature must be 5°F above dew point.
  • All new concrete must be cured for at least 30 days prior to application.
  • This product should be topcoated with a suitable novolac epoxy topcoat.
  • Colors may vary from batch to batch.
  • All new concrete must be cured for at least 30 days prior to application.
  • Physical properties are typical values and not specifications.

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.