Rust-Oleum 3366 Rapid Curing Adhesion Primer – Fast & Effective Bond for Smooth Floors

Rust-Oleum 3366 is a rapid curing, water-based adhesion primer specially formulated for smooth surfaces such as new and aged power-floated concrete—even those with pinholes. With excellent flow, a light grey colour to boost topcoat opacity, and a low odour formula, it allows for same-day application of primer and topcoat, saving time on site.

Key Features:

• Rapid Curing – Recoatable after just 3 hours
• All-in-1 Packaging – Easy and efficient to use
• Ideal for Smooth Concrete – Perfect for new or aged power-floated floors
• Fills Pinholes – Ensures uniform coverage
• Light Grey Colour – Enhances topcoat opacity
• Water-Based & Low Odour – Suitable for indoor use
• Excellent Flow – Smooth, professional finish

Application Details:

• Surface Types: Smooth/power-floated concrete with or without pinholes
• Recoatable: 3 hours
• Colour: Light grey
• Base Type: Water-based
• Odour Level: Low
• Size: 5L

Surface Preparation

New concrete should be allowed at least 30 days to dry. Surfaces should be clean, dry and
free from oil, grease, dust, dirt, curing compounds and other contaminants. Remove grease, oil and all other surface contaminations by alkaline or high pressure (steam) cleaning. Remove all previous coatings completely.

Technical Data 

Density (g/cm³): 1,1
Gloss Level: Satin
Solids Content in weight: 65%
Solids content in volume: 50%
Mixing Ratio: Base : Activator = 3 : 2 (Volume) = 1.1 : 1 (Weight)

Directions for Use

The tall outer tin contains a tin of Resin and a tin of Activator. Remove these two tins and
stir the contents of each thoroughly. Decant both tins into the tall outer tin. The two
components should then be very thoroughly mixed together using a wide bladed stirrer. A
wooden batten at least 25 mm wide is ideal. Mix for 2-3 minutes until an even colour and
consistency are obtained. Aim to apply the mixed components within one hour.

Data Sheets

Rust-Oleum 3366 Rapid Curing Adhesion Primer TDS

Rust-Oleum 3366 Rapid Curing Adhesion Primer Activator MSDS

Rust-Oleum 3366 Rapid Curing Adhesion Primer Base MSDS