MaxPrime is an outstanding multi-purpose one-component primer used primarily for concrete substrates and other inherently dust prone sealing applications. It is a moisture-cure solvent based polyisocyanate which is reduced 3:1 using Xylene, Aromatic 100. Butyl Acetate or MEK. This versatile primer is also formulated with zinc to provide galvanic protection when used in industrial metal assemblies. Its  "super-stick" nature makes it ideal for topcoats which require high performance adhesive characteristics while providing an easy-to-use air-less or roller application techniques. It is used in severe demanding environments such as coastal marine, industrial chemical processing and oily water treatment plants. Top-Coats include PolyureaShops ClearJacket as well as other coating systems such as urethanes, enamels or acrylics. Physical application of MaxPrimer requires the substrate be free from oily or corrosive contaminates. If application surface retains extensive corrosion, normal forms of media blasting is recommended to create a secure surface preparation. It is applied in thin coats and flashes off to a tacky touch in about 30 minutes depending on relative humidity and temperature. Please contact our technical support group for specific substrate application procedures, equipment, safety gear and clean-up kits. Refer to MSDS for material and safety standard procedures.


MaxPrime  PHYSICAL PROPERTIES (zinc based)

Salt Water Spray


Pass 500 hours

Cathodic Protection


Pass 75°C


ASTM 522

5200-7000 cp

Flash Point





Brown Liquid

Tackness Time


1 hour




MaxPrime application temperature ranges from 50°F to 100°F. This primer exhibits a limited working time window as top-coating must be applied while the primer retains its tack. Re-coating must be performed if tacky is lost to ensure excellent bonding intercoat adhesion. This primer requires reduction with solvent, such as Xylene, at a 3:1 ratio and will become very thin for good penetration. Stir in solvent until water-like uniformity. Apply MaxPrime using air-less sprayer, Cup Gun, roller or brush. Recommended max wet application film thickness is 10 mils. Material coverage per mixed gal 400 sq.ft/ gal. depending on roughness of surface. Solvent based materials must be used in well-ventilated areas.

Adhesion Results of Typical Substrates per ASTM D-4541 Elcometer


>250 psi

Excellent bonding


>250 psi

Excellent bonding


>250 psi

Excellent bonding

EPDM/PVC Membrane

>250 psi

Excellent bonding

Preparation of substrate surface prior to primer is extremely important as durability is only as good as the weakest link in the coating system.

Concrete must be fully cured and should be treated with a very mild acid or alkaline pressure wash solution or secured with a sandblasting or shot-blasting procedure depending on the severity of the concrete surface condition. For patching, use our calcium carbonate filled fast-set Acrylic Modified Epoxy applied by trowel. For expansion joints, use our JointSeal applied by hand cartridge dispensing gun.

Metals must be prepared and standard prepped to be clean and free of contaminants. Please call or email our Technical Support Group for any questions regarding material, application or prospective uses.


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