DESCRIPTION
EF-160 seals damp, vapor-emitting concrete so your epoxy system bonds and stays bonded.
EF-160 is a 100% solids, two-component epoxy moisture vapor barrier that controls moisture vapor emissions on new or deteriorated concrete floors. Rising slab moisture is a leading cause of epoxy delamination, blistering, and adhesion failure, and EF-160 stops it. Applied at 18 mils, it exceeds the ASTM F3010 standard for vapor permeance and withstands moisture vapor emission rates up to 25 lbs/1000 ft²/24 hrs (100% relative humidity, 6% by Tramex method).
It is the right primer for tough conditions: cold and humid environments, damp slabs, and poorly prepared surfaces where ordinary primers fail. It bonds to concrete cured as little as 14 days (use AQUAFLOW-400 deep-penetrating primer on slabs 14-28 days old), and it is approved for direct contact with potable water.
EF-160 is strong as well as protective. Its 15,000 psi flexural strength, 8,000 psi compressive, 6,000 psi tensile, and 80-85 Shore D hardness create a solid foundation for the rest of your system. At under 20 g/L VOC it is LEED v4 low-emitting and meets requirements for indirect food contact. It comes in clear, grey, and black: prime the slab, then build your Everflow epoxy or polyaspartic floor on a stable, moisture-controlled base. Note: EF-160 is a vapor barrier, not a waterproofing membrane, and is not designed for areas of high hydrostatic pressure.
Key Features & Benefits
- Controls Moisture Vapor: Withstands emission rates up to 25 lbs/1000 ft²/24 hrs (100% RH), preventing the moisture-driven delamination that destroys floor systems.
- Exceeds ASTM F3010: At 18 mils it surpasses the industry standard for vapor permeance (0.06 g/m²·24hr·mmHg).
- Works on Damp or Green Concrete: Designed for cold, humid conditions and damp or poorly prepared slabs; bonds to concrete cured as little as 14 days (with AQUAFLOW-400 on 14-28 day slabs).
- Potable-Water Safe: Approved for direct contact with potable water.
- High Strength Foundation: 15,000 psi flexural, 8,000 psi compressive, 6,000 psi tensile, 80-85 Shore D.
- Ultra-Low VOC: <20 g/L; meets requirements for indirect food contact; LEED v4 low-emitting.
- 3 Colors, Top-Coatable: Clear, grey, and black. Prime first, then build your Everflow floor system on top.
Technical Specifications
- Solids Content: 100% (by weight)
- VOC: <20 g/L (LEED v4 compliant)
- Chemistry: 2-component epoxy moisture vapor barrier
- Water Vapor Permeability: 0.06 g/m²·24hr·mmHg (ASTM E-96); exceeds ASTM F3010 at 18 mils
- MVER Tolerance: up to 25 lbs/1000 ft²/24 hrs (100% RH; 6% Tramex)
- Flexural Strength: 15,000 psi (ASTM D790)
- Compressive Strength: 8,000 psi (ASTM D695)
- Tensile Strength: 6,000 psi (ASTM D638)
- Hardness: 80-85 Shore D (ASTM D2240)
- Abrasion (Taber CS-17, 1000 cyc/1000 g): 0.11 g loss (ASTM D4060)
- Pull-Off Adhesion: >363 psi, substrate failure (ASTM D7234)
- Working Time: 15-20 min @ 70°F / 50% RH
- Cure @ 68°F: Recoat 18-24 hrs · Foot traffic ~1 day · Vehicle ~2 days · Full cure ~7 days
- Coverage: 18 mils, ~264 sq ft per 3-gallon kit
- Kit: 3-gallon (7.56 L resin A + 3.78 L hardener B)
- Colors: Clear, Grey, Black
- Standards: Meets requirements for indirect food contact; potable-water contact; SCAQMD 304-91
- Substrate: Concrete cured min. 14 days (AQUAFLOW-400 for 14-28 days); diamond grind to ICRI CSP-2; apply 41-86°F
- Limitations: Not a waterproofing membrane; not for high hydrostatic pressure
- Shelf Life: 1 year unopened (store 59-86°F)