APF VaporSolve® Primer | Adhesion Primer for Silicate Treated Concrete Product Overview APF VaporSolve® Primer is a specialized water based epoxy primer engineered exclusively for the VaporSolve moisture mitigation system. This product is not a standalone moisture vapor barrier (MVB). Its primary purpose is to serve as the critical "bridge" between challenging concrete substrates and the protective moisture barrier coat. It is specifically designed to solve adhesion failures on concrete slabs treated with silicate based curing compounds or densifiers—surfaces where traditional epoxy primers simply cannot bond. When used as the foundation for VaporSolve LP, it ensures the entire system remains anchored even under extreme hydrostatic pressure and high alkalinity. IMPORTANT: APF VaporSolve® Primer is an adhesion promoter, not a moisture barrier. It must be topcoated with VaporSolve LP to achieve moisture mitigation. Do not purchase this as a standalone solution for moisture vapor; it is specifically for bonding to high moisture slabs and concrete treated with silicates or densifiers. Where This Product Fits System Foundation: The mandatory first coat for the VaporSolve moisture mitigation system. Silicate Bond Specialist: Formulated to penetrate concrete treated with sodium or potassium silicates. Damp Slab Integration: Safely adheres to green or damp concrete where solvent primers fail. Alkalinity Defense: Uses Bisphenol F resin technology to resist the high pH environments common in wet slabs. Key Features Substrate Penetration: Low viscosity allows the resin to wet out and anchor into dense concrete pores. System Specific: Engineered to work in perfect chemical harmony with VaporSolve LP. Water Based & Low Odor: Safe for use in schools, hospitals, and occupied residential spaces. Wide Application Window: Reliable curing in temperatures ranging from 40°F to 100°F. Technical Specs & Mixing Property Details Coverage Approximately 200 sq ft per gallon Mix Ratio Do not mix partial kits Water Addition 1 gal water (3 gal kit) | 1 qt water (0.75 gal kit) Next Step Apply VaporSolve LP within 24 hours Surface Preparation Concrete must be mechanically prepared to a CSP 2 or CSP 3 profile. Remove all wax, old coatings, and loose contaminants. Vacuum thoroughly; the primer must reach the open pores of the concrete. Important: Acid etching is not an approved prep method for moisture mitigation systems. Mixing Instructions Pour entire contents of Part B into Part A. Mix for 2 to 3 minutes with a low speed drill (300 to 450 RPM). Add Water: Add the required amount of clean potable water and mix again for 2 to 3 minutes until uniform and creamy. Apply immediately. Pour material onto the floor within 3 minutes of mixing to maximize penetration. Frequently Asked Questions Can I skip the primer and just use VaporSolve LP?If your concrete has been densified or treated with silicates, skipping this primer will likely lead to a bond failure. This primer is the only layer engineered to bite into those silicate residues. How long do I wait before applying the VaporSolve LP barrier coat?Apply the LP barrier coat as soon as the primer is tack free, typically within 6 to 12 hours. Do not wait longer than 24 hours without mechanical sanding. Is this the same as a standard water based epoxy?No. This is a Bisphenol F resin system designed specifically for the extreme alkalinity and vapor pressure found in moisture mitigation environments. Does this primer come in colors?No. VaporSolve Primer is a clear system. Its job is substrate penetration, not aesthetics. Color is introduced in the subsequent coating layers. Do I need to wash the floor before priming?Mechanical grinding is the best prep. If the slab is dirty, it must be degreased and neutralized before grinding. The primer must reach clean, open concrete to work.
