Titebond 821-Step Adhesive, Moisture & Sound Control


Titebond® Adhesive, Moisture & Sound Control combines the superior properties of a moisture cure adhesive with the ability to be used as a moisture and sound control system. This high-performance formula is ideal for bonding engineered, solid plank, cork underlayment and bamboo flooring to common underlayments and subfloors. Its non-slumping characteristics allow the troweled ridges to bridge normal gaps between the wood flooring and the subfloor, virtually eliminating hollow and popping spots. This product also allows the installer to protect the wood floor with a glue down all-in-one application with unlimited moisture warranty, saving labor and time.

Once cured, the product is water-resistant. It offers excellent green grab and develops a superior bond that will remain flexible for the lifetime of the floor. Alternatively, Titebond 821-Step can be used just as a one-part adhesive simply by using a different sized trowel. Please see specific application guidelines in this document for details and instructions. It can also be combined with Titebond 531 or Titebond 531 PLUS Moisture Control Systems to achieve unlimited moisture protection. It has unparalleled green grab, strength development and spreads easily. This mold and mildew resistant formula delivers exceptional performance characteristics that exceed the expectations of professional installers.

  • Unlimited Moisture control protection
  • Excellent green grab & strength
  • One coat application
  • Moisture, mold & mildew resistant
  • Performs well on bamboo flooring

Revised October 2017


Product Features

Physical Properties

Type Urethane Calculated VOC 77 g/L
Color Brown Weight Per Gallon 11.76
Solids 95% Flashpoint > 200°F (Pensky-Martens Closed Cup)
Viscosity 100,000 cps Freeze/thaw Stability Not affected by freezing
Storage Life 1 year in tightly closed container

Moisture Control & Adhesive Method:

All engineered plank flooring
  • Trowel Size - 1/4" x 3/16" V-notch (Saw tooth)
  • Coverage - Approximately 35 sq. ft. per gallon
sawtooth
Solid flooring and bamboo up to 5/8"
  • Trowel Size - 1/4" x 1/4" V-notch (Saw tooth)
  • Coverage - Approximately 30 sq. ft. per gallon
sawtooth

ADHESIVE ONLY METHOD:

All parquets measuring less than 3/4" thickness
  • Trowel Size - 1/8" x 1/8" x 1/8" (Square-notch)
  • Coverage - Approximately 65 sq. ft. per gallon
SquareTooth
All engineered plank flooring
  • Trowel Size - 3/16”w x 1/4”d x 11/16” c-c (or 1/2” space) V-notch
  • Coverage - Approximately 65 sq. ft. per gallon
VNotch
Solid flooring and bamboo with a width of less than 3" and measuring 5/8"or less in thickness
  • Trowel Size - 3/16”w x 1/4”d x 1/2” c-c (or 5/16” space) V-notch
  • Coverage - Approximately 50 sq. ft. per gallon
VNotch
Solid flooring and bamboo with a width greater than 3" and measuring 5/8"or less in thickness and 3/4" shorts
  • Trowel Size - 3/16" x 3/16" x 3/16" (Square-notch)
  • Coverage - Approximately 35 sq. ft. per gallon
SquareTooth
Cork Underlayment
  • Trowel Size - 1/16" x 1/16" x 1/16" (Square-notch)
  • Coverage - Approximately 125 to 185 sq. ft. per gallon
SquareTooth


Specifications Guide
Type of Flooring / Flooring Thickness: Jobsite / Subfloor:
  • All parquets measuring less than 3/4” thick
  • All engineered flooring
  • Solid wood flooring measuring 5/8” or less in thickness
  • Bamboo flooring
  • 3/4” solid shorts (less than 24”)
  • 5/8” plywood (2’x8’ or 4’x4’)
  • New, old or existing concrete, properly treated light weight concrete
  • Below-grade concrete
  • Plywood
  • OSB (oriented strand board)
  • Radiant heated slabs
  • Clean and unwaxed vinyl

Application Guidelines

Subfloor Preparation All substrates must be clean, dry, structurally sound, properly cured and free of dirt, oil, paint, old adhesive, wax, sealers, curing agents and any material that may inhibit bonding. General scouring with 20 grit or #3 1 / 2 paper will remove most compounds. All loose materials must be vacuumed from the surface after scouring. The subfloor must be flat to a tolerance of 3/16” in a 10’ radius. Hollow spots, popping spots and squeaks are related to unevenness in the subfloor. Grinding concrete floors is preferred over the use of filling compounds. If filling/leveling compounds are used, they must be Portland cement based and have a compressive strength equal to or greater than 3000 psi when cured. Moisture level in concrete subfloor will fluctuate. Any cementitious material used must be rated for the highest moisture content possible. Consult the cementitious material manufacturer’s application directions. Use of product over light weight concrete and all gypsum based materials requires the use of Titebond Concrete Primer or equivalent prior to application of adhesive.

Moisture Content Limitations Titebond 821-Step may be used as an adhesive and moisture control system for concrete slabs with elevated moisture levels. Calcium chloride or in-situ RH testing is NOT necessary. To ensure a proper bond and full moisture control, it is essential that the concrete be dry to the touch and fully cured before installation. For flooring adhesive only application method, concrete subfloor moisture cannot be greater than 3 lbs./1000 sq.ft./24 hours on a Calcium Chloride Test or greater than a reading of 4.5 on a Tramex Concrete Moisture Encounter or 75% relative humidity per an in-situ probe test.

Installation: One-step Adhesive, Moisture and Sound Control Method When using this method, follow all previous instructions for subfloor preparations. Be sure to obtain the correct trowel. Trowel product with the correct trowel and immediately install the wood flooring into the wet adhesive. To reduce slippage, secure the first two starter rows with starting blocks fastened to the substrate or wedges against starting wall. Remaining planks must be placed firmly into adhesive. Planks that are not flat should be weighted for several hours. 100% adhesive coverage, with no voids, is required to qualify for the all-in-one installation warranty. Open time depends on relative humidity and is usually around 90 minutes. Be sure to seat the flooring into the adhesive firmly. Any low or high spots may cause voids in the adhesive and void the warranty. Roll the floor with a 150 lb. roller within 30 minutes of application to assist in creating a continuous layer to ensure total coverage and protection for moisture control.

Installation: Adhesive only method It is recommended that the adhesive be allowed to flash for 30 minutes prior to installing the wood flooring. To reduce slippage, secure the first row using Titebond Wood Flooring Tape. NOTE: Do not walk on the floor during the installation. You should not work on top of the wood. Normally, ultimate strength will be reached in 24-48 hours. Wait at least 2 days before finishing an unfinished floor. Titebond 821-Step can be used in conjunction with Titebond 531 Plus Moisture Control System for an installation with NO MOISTURE LIMITATIONS.

*The recommended flash time for Titebond 821-Step is 30 minutes, depending upon subfloor moisture and humidity.

Re-sealing and Re-opening Partial Pail Scrape sides of pail (this will aid in removal of adhesive later). Place plastic trash bag over unused adhesive, working out any air pockets. Replace lid on pail and tightly seal. Upon re-opening pail, remove trash bag. Material should be ready for use.

Gluing Plywood Over Concrete 1. Use 5/8" CD Exposure 1 Plywood subfloor panels, 4' x 8' sheets; cut sheets into 2' x 8' or 4' x 4' sections
2. Score the back of the panels half the thickness of the panel on a 12" x 12" grid in order to relieve tension in plywood
3. Use a 1/4" x 1/4" square-notched trowel to apply adhesive to concrete
4. Lay sections in a staggered joint pattern in the adhesive, with 1/8" spacing between sheets, and 3/4" minimum expansion space at walls and all vertical obstructions
5. Add weight as necessary to ensure adhesive remains in contact with plywood as it cures
6. Allow adhesive to dry overnight before proceeding with flooring installation

Cleanup As the pre-finished flooring is being installed, immediately wipe any wet adhesive from the flooring, tools and equipment with mineral spirits. Do not allow adhesive to cure on surface of the flooring, tools or equipment. Follow solvent manufacturer’s directions when working with solvents. Cured adhesive will be difficult to remove.
CAUTION: Do not sand, scour or abrade any material that is suspected of containing asbestos fibers. Asbestos is known to cause cancer. Federal law requires that asbestos be handled by a licensed and certified hazardous materials contractor.

* The recommended flash time for Titebond 821-Step is 30 minutes, depending upon subfloor moisture and humidity. Specific questions regarding "flash time" should be directed to Franklin Technical Service at 1.800.347.4583.

Limitations

MOISTURE CONTENT LIMITATIONS (One-step adhesive, moisture and sound control method): Titebond 821-Step may be used as an adhesive and moisture control system for concrete slabs with elevated moisture levels. Calcium chloride or in-situ RH testing is NOT necessary. To ensure a proper bond and full moisture control, it is essential that the concrete be dry to the touch and fully cured before installation. 100% substrate coverage and adhesive transfer is required.

MOISTURE CONTENT LIMITATIONS (Adhesive Only Method): Titebond 821-Step may be used for above-, on- and below-grade applications and on all substrates listed in this specification guide. All applications are susceptible to moisture and should be tested for moisture prior to installation in several locations within the installation area.

Acceptable conditions of concrete for above-, on- and below-grade applications are: Acceptable conditions of wood substrates are a moisture reading of less than 12% or be no more than 4% different from the flooring being installed when using a Tramex, Delmhorst or equivalent wood moisture meter. If subfloor moisture conditions do not meet above guidelines at the time of flooring installation, or they could exceed them at any time after installation, then a Titebond moisture control system should be used.


Download Titebond 821-Step warranty information

Caution Statements

DANGER. Harmful if inhaled. Causes skin and eye irritation. May cause allergy or asthma symptoms or breathing difficulties if inhaled. May cause an allergic skin reaction. May cause respiratory irritation. May cause damage to organs (lungs) through prolonged or repeated exposure if inhaled. Wear protective gloves, and eye or face protection. In case of inadequate ventilation wear respiratory protection. Use only outdoors or in a well-ventilated area. Do not breathe vapor from heated product. Wash hands thoroughly after handling. FIRST AID: IF EXPOSED OR CONCERNED: Get medical attention. IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing. Call a POISON CENTER or physician if you feel unwell. IF EXPERIENCING RESPIRATORY SYMPTOMS: Call a POISON CENTER or physician. IF ON SKIN: Wash with plenty of soap and water. Take off contaminated clothing and wash clothes before reuse. IF SKIN IRRITATION OR RASH OCCURS: Get medical attention. IF IN EYES: Rinse cautiously with water for several minutes. Remove any contact lenses and continue rinsing. IF EYE IRRITATION PERSISTS: Get medical attention. Dispose of contents and container in accordance with all local, regional, national and international regulations. For additional information, refer to Safety Data Sheet.

Ordering Information

Part No.SizeWeightUPCCase UPCUnits Per PackagePackages Per Pallet
83193.5 Gallon Pail45.47037083083194 136


Important Notice: Our recommendations, if any, for the use of this product are based on tests believed to be reliable. Since the use of this product is beyond the control of the manufacturer, no guarantee or warranty, expressed or implied, is made as to such use or effects incidental to such use, handling or possession or the results to be obtained, whether in accordance with the directions or claimed so to be. The manufacturer expressly disclaims responsibility therefore. Furthermore, nothing contained herein shall be construed as a recommendation to use any product in conflict with existing laws and/or patents covering any material or use.
2020 Bruck Street, Columbus, Ohio 43207
CUSTOMER SERVICE 1-800-669-4583
TECH SERVICE 1-800-347-4583
www.titebond.com
Franklin International