Isopoxy 309 FS

Isopoxy 309 FS (Fast Set) is a high performance; two component; 89% volume solids; fast set epoxy primer. Designed as a high solids primer prior to Isotec topcoats; or as a basecoat/broadcast system basecoat. This product can also be mixed with sand to create a slurry or mortar for repairing concrete surfaces prior to an Isotec coating system. Isopoxy 309 FS has good low temperature cure capabilities down to as low as 45°F. This product should always be top coated with an aliphatic product when long term color stability is a requirement.



  • Chemical Plants
  • Educational and Institutional Floors
  • Interior or Exterior Applications if Top-Coated
  • Manufacturing Facilities
  • One Day Garage Floors
  • Residential, Commercial and Industrial Floors


  • Chemical Resistant
  • Conveniently Packaged for 2:1 Mix Ratio
  • Excellent Adhesion to Concrete
  • Fast Set for One Day Floors
  • Low VOC
  • Very Low Odor
  • Withstands Traffic after 12 hours
Product Types



Product Testing

Test PerformedTest Results
% Solids - by Volume89 % 
% Solids - by Weight91 % 
Adhesion - ASTM D4541 - Elcometer420-450 psi 
Elongation - ASTM D63814.4 % 
Full Cure2-3 Days 
Hardness - ASTM D2240 - Shore D70 D 
Impact Resistance - ASTM D279450 in*lbs 
Pot Life - 100g15-25 Minutes 
Ratio by Volume - (Resin:Activator)2-1  
Recoat Window5-12 Hours 
Recommended Film Thickness5-10 Mil 
Return to Service - Foot Traffic8-12 Hours 
Tack Free Time2.5-5 Hours 
Tensile Strength - ASTM D6382,000-2,500 psi 
Theoretical Coverage per Gallon - 10 mils DFT140-150 sqft 
VOC108-115 g/L 
Working Time20-25 Minutes