E145 Polyamide Epoxy Block Filler | Concrete Block & Masonry Vertical Walls | High Build to 11.5 Mils DFT One Coat

COVERAGE RATE

CURE SCHEDULE

RECOAT TIME

APPLICATION TEMPERATURE:

50°-100°F with relative humidity below 90%.

MIXING AND APPLICATION INSTRUCTIONS

SURFACE PREPARATION:

When coating new block and masonry surfaces, remove all dirt, dust, grease, oil, form release agents, curing compounds, salts, hardeners, chemical contaminants, soil, laitance, efflorescence, old paint, and any other foreign matter. The prepared surface must be clean, dry and structurally sound. Surface should be cleaned by sand blasting or power tool cleaning. Repair damaged masonry cracks, bug holes, spalled areas, joints and seams with CF-615 Epoxy Crack Filler. Allow new masonry to age for 30 days before painting.

MIXING INSTRUCTIONS:

Stir each component to a uniform consistency, by power agitation. Make sure any pigment settled to the bottom is incorporated. Do not vary proportions. Poly-Chemcure E-145 Block Filler is prepared by mixing 1 part Base (Part A) to 1 part Hardener (Part B) with a explosion proof variable speed drill with a Jiffy Mixer. Be sure material is thoroughly mixed together. Allow an induction or “sweat in” time for 30 minutes to one hour before using. Then re-mix once more and apply. Thin up to 10% per gallon with SA-65, if necessary. Please note that use of an improper mixer can result in product failure.

APPLICATION PROCEDURE

E-145 can be applied by brush, roller or spray. Apply 1-2 coats, depending on porosity.

When to Use 1 Coat  vs 2 Coats:

Depends on block type. Smooth CMU/ tight block usually one coat of the block filler will be fine. Very rough/ heavily textured block (split-face, etc.) two coats may be required for full hide/ leveling. Data sheed guidance should be primary; recommend testing on representative block before full production.

Roller – Use a 3/8” – ½” 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.

The preferred method of application is to apply a full base coat using an airless spray unit, followed immediately by “back-rolling” the materials to produce a uniform, smooth finish. Use a 3/8” to 1/2” nap, phenolic core roller cover for “back-rolling”. For best results in spraying, use 50% overlapping crosshatch pattern to minimize the occurrence of pinholes. Rough and porous block may need two (2) coats of E-145 Block Filler before applying the rest of the coating system. The second method of application is rolling. Use a 3/4″ – 1-1/4″ phenolic core roller cover.

Make sure the E-145 Epoxy Block Filler is stored at 70ºF – 80ºF before using. Do not apply to surfaces below 50ºF or above 100ºF. Do not apply over dew or frost. The surface should be dry and at least 5ºF above the dew point.

We strongly recommend to test the coating before recoating or topcoating. This is done by pressing your thumb on the coating in multiple places to ensure a fingerprint impression is not visible. If there is no impression visible, then coating the wall can be done. Note, colder or hotter than 75 degrees can affect the curing time schedule  

CAUTIONS

E145 is flammable. Keep away from all sources of ignition during mixing, application and cure. The 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 coatings. For safety and proper product curing, good ventilation is necessary when painting indoors or in confined areas. 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.

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.

What is an epoxy block filler?

An epoxy block filler is a high-build coating designed to fill, seal, and smooth porous concrete block and masonry surfaces. Unlike traditional acrylic or latex fillers, epoxy block fillers create a hard, durable, chemical-resistant surface ideal for industrial and commercial environments.

What is E145 Epoxy Block Filler used for?

E145 is used to fill and seal concrete block and masonry walls in:

• Warehouses
• Manufacturing facilities
• Food processing plants
• Car washes
• Hospitals, schools, and laboratories
• Garages and residential applications

It is designed for both interior and exterior vertical surfaces.

What makes E145 different from standard block fillers?

E145 stands out because it is an epoxy-based block filler, offering:

• Much harder film than latex or acrylic fillers
• High impact and abrasion resistance
• Chemical resistance when topcoated
• High-build application (up to 11.5 mils in one coat)

This makes it ideal for demanding environments where durability matters.

Can E145 fill concrete block pores and voids?

Yes. E145 has excellent filling properties that help:

• Fill pinholes and voids in block
• Create a smooth, uniform surface
• Improve “hold out” for topcoats

This results in a more professional and longer-lasting finish.

Is E145 a primer or a standalone coating?

E145 functions as a high-build primer/basecoat in a coating system.

• It does not require a primer underneath
• It can be left as-is in some applications
• It is typically topcoated for added performance

For additional assistance in picking the right top coat for your project reach out to us at 630-675-4509 or [email protected].

How thick can E145 be applied?

E145 can be applied at up to 11.5 mils dry film thickness in a single coat, making it a true high-build epoxy block filler.

Is E145 suitable for food processing environments?

Yes. E145 meets requirements for use in food processing plants, making it a strong choice for sanitary environments that require frequent cleaning and durability.

How durable is E145 compared to other block fillers?

E145 provides:

• High impact resistance
• Abrasion resistance
• Long-term performance under frequent cleaning and harsh conditions

This durability makes it ideal for industrial and high-traffic environments.

What surfaces can E145 be applied to?

E145 is designed for:

• Concrete block (CMU)
• Masonry walls
• Vertical concrete surfaces

The surface must be clean, dry, and structurally sound before application.

Does E145 require surface preparation?

Yes. Proper prep is critical:

• Remove dirt, grease, oil, and contaminants
• Eliminate efflorescence and old coatings
• Repair cracks and damaged areas
• Allow new masonry to cure (about 30 days)

This ensures maximum adhesion and performance. For additional application tips, reach out to us today at 630-675-4509 or [email protected].

What is the mixing ratio for E145?

E145 is a two-component epoxy system mixed at:

• 1 part Part A (base) : 1 part Part B (hardener)

Proper mixing ensures consistent curing and performance.

What are the application temperature requirements?

• Apply between 50°F and 100°F
• Relative humidity should be below 90%

How long does E145 take to cure?

Typical cure times:

• 75°F:
  • Recoat: 2–3 hours
  • Full cure: ~3 days
• 50°F:
  • Recoat: 6–8 hours
  • Full cure: ~4 days

Why should I choose an epoxy block filler over acrylic?

Epoxy block fillers like E145 provide:

• Stronger adhesion
• Higher build in fewer coats
• Greater durability and chemical resistance
• Longer lifespan in harsh environments

Acrylic fillers are more economical, but epoxy systems offer superior long-term performance.