Bona: R851 Hardwood Floor Adhesive: 3 Gallon
$139.99
Bona
R851 Hardwood Floor Adhesive
3 Gallon Pail
Bona R851
Bona R851 is a one-component, moisture curing, water and solvent free, silane-based adhesive for wood floors. Bona R851 provides outstanding adhesion to a variety of surfaces, and allows for the natural movement of wood flooring.
- Extended open time – 60 minutes@70oF and 50%RH*
- 1250G and Moisture Barrier Plus clip-on trowels included!
- Excellent “green grab” means the flooring stays in place
- No “memory” – Floor seams will not move apart
- Rapid shear strength development – Flooring is ready for furniture and foot traffic in one day
- Easy to clean – Will not harm the finish on pre-finished floors; will not stain hands
- Easy to apply – No arm fatigue
- Exceptional ridge stability provides maximum adhesive transfer
- GREENGUARD Indoor Air Quality Certified®
- Moisture protection up to 18lbs or 95% RH
- ZERO VOC – Meets the criteria for LEED EQc 4.1 (v. 2.1, 2.2, 3.0)
- California Proposition 65 Compliant
- Can be used with radiant heat systems
TECHNICAL DATA
Physical Characteristics:
Ingredients – Calcium carbonate, silane modified prepolymer, plasticizers, amorphous silica Base – Silane Modified-Prepolymer
Color – Cream
Viscosity – 64 Pa/*s at a shear rate of 5/1 sec (cone-plate rheometer)
Density – 12.5-13.4 lbs./gallon
VOC Content – ZERO VOC
Max Shear Strength – 340psi (at final cure; lap shear test, 1mm gap)
Elongation – 180-220%
Water Vapor Permeability – < 0.7 g/m2-24 hour-mmHG @ 2000g/m2
Sound Reduction Rating – 71dB per ASTM E492-09 IIC (6” concrete slab with ceiling) Moisture Levels – Moisture protection up to 18lbs or 95% RH, 6% Tramex or 5% CM Odor – Non-offending
Flash Point – >100o C (212oF) (Pensky-Martens)
Stability – 12 months from date of manufacture in unopened, original packaging Packaging – 3 gallon (17.14 kg) containers
Application Characteristics:
Spread Rating – Easy to spread, maintains excellent ridge stability
Open Time- 60 minutes@70oF and 50%RH*
Coverage – See “Trowel Notch Requirements” for spread rate
Curing – Light foot traffic – 8-10 hours. Furniture, fixtures – 12-24 hours Unfinished floor sanding – after 24 hours *Dependent of temperature and humidity. Higher humidity decreases open time while lower humidity increases open time.
Recommended Use:
Commercial and residential. Use with solid or engineered prefinished and unfinished flooring; on, above or below grade1. May be used on both wood and concrete substrates2.
1Read and follow flooring manufacturer instructions, recommendations and limitations as to the suitability of a particular flooring product to certain job site conditions and installation methods.
2After proper site conditions, moisture testing results and substrate preparation have been met. See “Directions for Use” for acceptable job site conditions.
DIRECTIONS FOR USE:
BEFORE USING, READ ALL DIRECTIONS AND MATERIAL SAFETY DATA SHEETS. FOR TECHNICAL ADVICE: Call Bona US at 800-872-5515
ACCLIMATION AND SITE CONDITIONS: Building climate control system must be functioning with a temperature of 65oF – 80oF and maximum relative humidity of 70% for 72 hours before flooring is installed, during installation, and for 72 hours after installation. Acclimate Bona R851 adhesive to room temperature of the installation, usually overnight.
TROWEL NOTCH REQUIREMENTS (Spread rates are approximate):
Replace as needed to achieve proper spread rate.
Description |
Use |
Size |
Coverage Rate |
Bona 1250G Trowel or 1250G Clip-on Trowel |
Engineered flooring up to 8” width or solid plank 3/4” thick and 5” width |
1/4” x 1/4” x 7/16” V- notch |
55-60 sq. ft./gallon |
Bona 1500G Trowel |
Engineered flooring up to 16” width or solid plank 3/4” thick and 9” width |
5/16” x 5/16” x 7/16” V-notch |
50-55 sq. ft./gallon |
Bona MBP Clip-On Trowel |
Moisture barrier protection for Engineered flooring up to 16” width or solid plank 3/4” thick and 9” width |
7/16” V-notch with MBP spacer |
30-35 sq. ft./gallon |
Bona Engineered Flooring Trowel (EF) |
Engineered flooring, maximum 3/4” thick and 7” width |
7/32” x 13/64”x 25/64”V-notch |
70-75 sq. ft./gallon for adhesion only |
SPREADING ADHESIVE AND LAYING FLOORING: Spread adhesive on the substrate while holding the Bona trowel at a 90o angle, using a smooth semicircular motion. Do not leave any puddles of adhesive. Set the flooring into adhesive while the adhesive is still wet. Do not allow more than 60 minutes of open time before setting flooring into the adhesive(at 70oF and 50% RH; higher humidity can decrease open time, lower humidity can increase open time). DO NOT SET FLOORING INTO ADHESIVE THAT HAS SKINNED OVER. REMOVE ADHESIVE AND REAPPLY.
MAINTENANCE:
CLEAN-UP: Clean adhesive from the surface of the floor while wet. Use mineral spirits on a clean white cloth.
STORAGE: Store in a climate-controlled environment. Keep from freezing. Do not store for extended periods in excess of 90oF.
View the Bona Adhesives Brochure
Bona R851 & Gypsum-Based Concrete
Trowel Selection for Moisture Control
Understanding Impact Noise
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