APF Oil Stop Primer | Epoxy Primer for Oil Contaminated Concrete

Product Overview

APF Oil Stop Primer is a professional grade 100% solids epoxy primer engineered specifically to bond to oil soaked and hydrocarbon contaminated concrete. When standard primers fail due to embedded oils, this low viscosity formula penetrates deep into the slab to create a reliable and permanent bond.

For garages, auto shops, and industrial floors exposed to motor oil, hydraulic fluid, or solvents, this product prevents delamination and provides your coating system a stable starting point. It is the definitive solution when the concrete is already compromised and you still need the floor to perform.

Avoid Costly Concrete Replacement: Standard primers cannot bond to contaminated concrete, which leads to peeling and system failure. APF Oil Stop Primer is designed specifically for these conditions, allowing you to successfully coat difficult slabs so you don't have to rip out the floor and replace it.

Key Benefits

• Bonds to Contaminated Surfaces: Specifically designed for slabs affected by oils, fuels, and hydrocarbons.
• Deep Anchor Penetration: Low viscosity formula helps the resin anchor into compromised concrete pores.
• Prevents Delamination: Creates a reliable base for epoxy, polyaspartic, and flake systems.
• Problem Solving Performance: The go to primer when traditional resins will not hold.
• 100% Solids and Low VOC: Strong build with minimal odor, making it suitable for interior applications.

Recommended Applications

• Auto repair shops and service bays.
• Residential garage floors and home workshops.
• Machine shops with frequent oil or fluid spills.
• Industrial warehouses with heavy forklift traffic.

Technical Specifications

Surface Preparation

• Concrete must be cured for at least 30 days and structurally sound.
• Surface must be free of loose coatings, wax, and heavy surface debris.
• Mechanically prepare the surface to a CSP 2 or CSP 3 profile.
• Vacuum thoroughly to remove all dust and debris before application.

Pro Tip: Apply APF Oil Stop Primer immediately after grinding and surface preparation. On heavily oil-contaminated slabs, embedded oils can migrate back to the surface within hours. Delaying application increases the risk of adhesion failure, so it is best to prep and coat in the same window.

Mixing and Application

• Mixing: Combine Part A and Part B at a 3 to 2 ratio. Mix with a low speed drill for 2 to 3 minutes. Scrape sides and bottom thoroughly. Apply immediately after mixing.
• Application: Pour in ribbons and spread with a squeegee. Back roll with a solvent resistant 3/8 inch nap roller.
• Technique: Back roll twice in a north south and east west pattern to ensure the resin fully wets the substrate.
• Recoat: Apply subsequent coats within 24 hours. If exceeded, sand with 80 to 100 grit until a uniform dull finish is achieved.

Frequently Asked Questions

Can I use this on a floor that currently has standing oil?
No. While it bonds to contaminated concrete, you must first clean and degrease the surface to remove standing oil and surface muck before mechanical preparation.

What happens if I use a regular primer on oil soaked concrete?
Standard epoxies will likely bead up or fail to bond, leading to fish eyes in the coating and eventual peeling once vehicle tires or heat are introduced.

Is this primer clear?
Yes. It is a clear 100% solids epoxy. It is not designed to be tinted.

Can I apply a flake system over this?
Yes. This creates an ideal bond for epoxy base coats, flake systems, and polyaspartic topcoats on compromised slabs.