Bostik EFA Engineered Flooring Adhesive

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Description for Bostik EFA Engineered Flooring Adhesive

Single component, moisture cure adhesive; wet lay; fast cure rate; VOC compliant; low odor.

Application Type	Bond
1 Part or 2 Part	1 Part
Material Form	Liquid
Substrate	Ceramic, Vinyl, Cement, Chip Board, Concrete, Terrazzo, Particle Board, PlyWood, Wood
Manufacturer	Bostik
Chemistry	Urethane, Acrylic
Application Method	Notched trowel
Cure Method	Moisture
Cure Time (min)	Fast
Viscosity (cPs)	275,000, Self-Leveling
Color	Beige, Beige
High Temperature Resistance (°C)	49
Low Temperature Resistance (°C)	-7
Density (g/cm³)	9 (weight (lbs/gal))

Best Practices for Bostik EFA Engineered Flooring Adhesive

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Technical Data for Bostik EFA Engineered Flooring Adhesive

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Overview

Application Type
- Adhesive - Bond
1 Part or 2 Part
- 1 Part or 2 Part - 1 Part
Material Form
- Liquid
Substrate
- Ceramic
- Concrete
- Vinyl
- Wood - Chip Board, Particle Board, PlyWood
- Stone - Cement, Terrazzo
- Other - Gypsum
Industry
- Industrial - Sub floor
- Construction - Floors
Chemistry
- Acrylic
- Polyurethane - Urethane
Application Method
- Spatula/Trowel - Notched trowel
Cure Method
- Moisture
Color
- Brown - Beige
- Off-White - Beige

Specifications

Cure Specs

Application Temperature (°F)	50 to 95
Cure Time (min)	Fast
Viscosity (cPs)	275,000, Self-Leveling

Bond Strength

Shear Strength (psi)	165	Test Method
Tensile Strength (psi)	190

Material Resistance

High Temperature Resistance (°C)	49
Low Temperature Resistance (°C)	-7

Hardness

Elongation (%)	45	Test Method
Flexibility	Flexible

Other Properties

Flash Point (°F)	170.0
Density (g/cm³)	9 (weight (lbs/gal))

Business Information

Shelf Life Details	Store in a clean, dry, warm area to ensure ease of application.Shelf life is one year from date of manufacturing.
Shelf Life Type	From the date of manufactue
Shelf Life (mon)	12

Not Good For

Don't Use For	Over concrete treated with sealers or curing compounds, solid strip or plank flooring

Best Practices for Bostik EFA Engineered Flooring Adhesive

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1. Surface Preparation
  
  All surfaces must be structurally sound, clean, dry and smooth, free of voids, projections, loose materials, oil, grease, sealers, and all other surface contaminants that may inhibit proper bond. Maximum floor variation is 1/8” in 10 feet. Repair surface areas requiring patching or leveling with portland cement-based materials such as Bostik’s Floor Patch 101, Fast Patch 102 or Self-Leveling Underlayment 103.
2. Application
  
  EFA is designed for Wet-Lay Installations Only. With the Wet-Lay method, you do not allow adhesive to flash. Trowel adhesive and immediately begin installing wood. Secure a starter row by wedging or face nailing. Step back from starter row and begin spreading adhesive with a suitable trowel (see Recommended Trowel Chart).Spread only enough adhesive to be covered with flooring within 45 minutes. If too much adhesive is spread, and wood cannot be installed within 45 minutes, the product will begin to set up and adhesive transfer will be jeopardized. Do not set flooring into adhesive that has a dry skin. After three to four rows of flooring is installed, tape rows together with removable 3M blue masking tape to prevent floor from moving. Step back a few feet, apply more adhesive, and repeat steps 3 & 4.Flooring that is not flat must be weighted to insure good contact. Additional adhesive may be applied to fill voids. As you work, immediately clean any adhesive off pre-finished (non-wax) flooring with Bostik Hand & Tool Towels, Bostik AR 2000 or mineral spirits (be careful not to harm finish).If you must walk on the floor, secure rows with blue tape and step carefully. When installation is complete, use wedges to hold the floor tight. Roll floor with a 100 lb. roller to insure transfer of adhesive. EFA will begin to hold flooring in about 8 hours, depending on humidity and temperature. Let adhesive cure 16 hours before exposing it to heavy traffic, and remove wedges prior to installing molding.
3. Clean-Up
  
  Immediately clean any adhesive on pre-finished (non-wax) flooring using Bostik’s Hand & Tool Towel (towel will not harm finish), or with a soft cloth and mineral spirits (be careful not to harm finish). Do not allow mineral spirits to sit on hardwood surface. Clean tools with Bostik’s Hand & Tool Towel or mineral spirits before adhesive cures. Removal of cured adhesive from pre-finished flooring, skin, tools and equipment is very difficult.
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