Prime-Crete PC-149 Clear Epoxy Penetrating Primer-Sealer

V.O.C. Complaint
A low viscosity, two component, clear, polyamide modified epoxy primer/sealer formulated with unique wetting agents to provide maximum penetration into concrete surfaces. PC-149 seals concrete surfaces from penetration of water and chemicals which cause concrete deterioration and spalling. Ideal for both new and old concrete surfaces for exterior or interior exposures. This epoxy concrete sealer is also used as primer sealant for epoxy and polyurethane top coats.

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SKU: PC-149 Category:
1. Excellent penetration and high “wetting out” properties
2. Excellent adhesion to concrete and masonry surfaces
3. Good water, salt and chemical resistance
4. Prevents “dusting” by increasing strength of concrete surfaces
5. Excellent abrasion resistance over concrete
6. Designed as a primer sealant for high performance epoxies and polyurethanes
7. Protects bond line deterioration
8. Excellent against staining
9. Odorless and non-toxic when dry
10. USDA Approved
ColorClear and Gray
Volume Solids55% 2%
Theoretical Coverage (per gallon at 1.0 DFT.)882 ft
Recommended Coverage176 – 294 sq. ft per gal to yield approx. 3 – 5 mils DFT
(coverage will vary with porosity of concrete)
Mixing Ratio1:1 by volume
Mix 1 part Base (Part A) to 1
part Hardner (Part B)
Induction Time30 min
Pot Life4 – 6 hours at 75 F
ThinningNormally none required
ApplicationSpray, brush or roller
Application Temperature50 to 120 F
Maximum Dry Service Temperature200 F
Minimum Recoat Time @ 75 F at 3.0 dry mils8 hours, or overnight
Maximum Recoat Time @ 75 F at 3.0 dry mils48 hours
Clean UpS-74
Cure Time16 – 24 hrs. at 75 F
Packaging10 gal. units
2 gal. units
2 Qt. Units
V.O.C3.23 LBS/gallon
387 GMS/Liter
Chemical ResistanceGood resistance against alkalis, salts, fresh or salt water, and many acids and solvents.
Recommended as a deep penetrating sealer to protect new and old concrete surfaces from attack by chemicals, water, and effects of freeze/thaw cycles. The resulting tight film helps prevent “dusting” of the concrete, spalling, and deterioration.

Excellent industrial concrete sealer for warehouse floors, parking decks, concrete slabs and walls, bridges, loading docks, exterior walks, runways, dams, driveways, garages, aircraft hangars, and secondary containment areas. PC-149 can be made into a non-skid finish.

Used as a primer for Gulf Coast Paint’s PC-200, CM-15, PC-500, PC-517, PC-555, Epoxies; CT-352, and CT-370 Polyurethanes.

Surface Preparation
Gulf Coast Paint Mfg., Inc. recommends four types of surface preparation. Any one of the four surface Preparations may be sufficient or a combination of the four may be required depending on the condition of the concrete surface.

1.High Pressure Wet Abrasive Blast Cleaning
All loose and unsound concrete must be mechanically removed down to sound concrete by means of power tool equipment, such as, chipping/scaling hammers, rotary scalers, etc.
High pressure water blast with sand injection all surfaces to remove all concrete laitance, contaminants, and other foreign deposits to provide a sound, clean surface. Use clean, dry air to blow down these areas to remove excessive moisture.

2.Acid Etch
Apply Gulf Coast Paint’s Clean & Etch Concrete Acid Solution at a spread rate of approximately 75-150 square feet per gallon.Work the solution into the concrete with a stiff broom or fiber brush. Allow solution to remain on the concrete surface for approximately 10 minutes, or until the effervescing and bubbling ceases. Then flush floor thoroughly with clean, fresh water to remove all laitance, dirt, and other foreign materials.
NOTE: Do not allow the Clean & Etch solution to dry on the floor before flushing off because dirt, etc., can be redeposited in the pores of the concrete.

3. Vacuum Blast
All areas of the existing concrete shall be Vacuum Abrasive Blast cleaned using a Wheelabrator Blastrac Shot Blast Machine with Dust Collector. A proper anchor profile pattern shall be achieved to provide maximum adhesion of the recommended system. A thorough washing may be necessary prior to blasting to remove all foreign matter. Check with Blastrac Mfg. for proper shot and application procedures.

4. Dry Abrasive Blast: Abrasive blast concrete surface to remove all laitance, loose concrete, coating, sealers, etc. It is necessary to achieve a rough anchor pattern and get to sound concrete. All blast material and foreign matter must be removed before application.

In all cases of surface preparation, the pH should be checked. A pH reading of 7.0 to 8.5 is acceptable. Also, a “Water Dissipation Test” should be made on random areas of the floor to determine that the proper degree of porosity has been achieved. A “Vapor Barrier Test” should also be run on the concrete. Consult Gulf Coast Paint Mfg. for specifics on testing.
New concrete must be cured at least a minimum of 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.

Mixing Instructions, Application Procedure & Recoat Time
Mixing Instructions
PC-149 is prepared by mixing 1 part Base (Part A) to 1 part Hardener (Part B) with a power mixer. Allow an induction time of 30 minutes before using. Thinning is not required.Application ProcedureFor best results, use a medium nap, phenolic core roller. Apply a uniform wet film while working material into surface. Do not allow material to “puddle”. Spread rate will be approximately 175 to 250 sq. ft. per mixed gallon, depending upon porosity of concrete surface. One or two coats may be required. PC-149 may be sprayed, men “back-rolled” to produce a uniform coat. May be applied with a pure bristle brush.
Do not apply to surfaces below 50 F. or above 120 F. Do not apply if the surface temperature is within 5 of the Dew Point. PC-149 Base and Hardener should be stored at 75 F – 85 F. To help maintain a lower, rollable viscosity. Do not apply when material is cold. Allow a minimum of 72 hours with good ventilation before putting floor back into service. If a non-skid finish is required, prepare a test patch for owner approval prior to application. PC-149 is not recommended as a finish coat in areas where there is direct sunlight. PC-149 Gray is not recommended as a finish coat due to its very light pigment loading. Not recommended on floors susceptible to hydrostatic pressure.

Recoat Time
PC-149 can be recoated in 8 hours at 75 F. at 3 dry mils. If recoat time exceeds 48 hours, sanding and a solvent wipe are necessary before applying a topcoat.

PC-149 is flammable. Keep away from all sources of ignition during mixing, application and cure. The HARDENER (Part B) and mixtures of BASE (Part A) with HARDENER (Part B) can cause eye and skin bums 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 applying coatings.

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.

PC-149 is for industrial use only
PC-149 is for professional use only
Keep away from children

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