Knowde Enhanced TDS
Identification & Functionality
- Chemical Family
- Product Type
- Technologies
Features & Benefits
- Ready-to-Use Product Features
- Attributes
- Easy to Spread
- Freeze-Thaw Stable
- Non-Slumping
- Low Odor
- MVER up to 5 lbs./80% RH
- Remains Elastomeric
- Easy to Clean When Wet
- Helps Contribute to LEED Credits
- General Characteristics
DriTac 7300 has been formulated for the interior installation of multi-ply engineered plank, solid plank, bamboo, exotic wood, acrylic impregnated wood, parquet, plywood, recycled rubber flooring and cork and rubber underlayments over approved substrates. DriTac 6900 is moisture resistant, however, to prevent damage to the flooring from subfloor moisture, carefully follow the wood manufacturer’s instructions. The time it takes for the adhesive to cure is related to temperature, humidity, porosity of the subfloor, ventilation and air movement.
Applications & Uses
- Markets
- Applications
- Application Area
- Compatible Substrates & Surfaces
- Flooring Types
- Parquet
- Cork/Rubber/Foam Underlayment
- Plywood
- Exotic Woods
- Multi-Ply Engineered Plank
- Solid Wood Planks
- Acrylic Impregnated Wood
- Recycled Rubber Flooring
- Approved Subfloors
- Plywood
- Terrazzo and ceramic tile
- Underlayment grade O.S.B.
- Vinyl tile flooring coated with vinyl primer
- Concrete; above, on or below grade in the absence of excessive moisture and alkalinity
- Non-cushioned fully adhered sheet vinyl coated with vinyl primer
- Lightweight concrete/gypcrete (coated with latex primer), per ASTM F2419
Note: If DriTac’s list of approved subfloors is different from the flooring manufacturer, DriTac requires that you must follow the flooring manufacturer’s recommendation.
- Subfloor Requirements
- Clean - It is required that all concrete, sheet vinyl, vinyl tile, terrazzo and ceramic tile subfloors be scoured with #3-1/2 open coat sandpaper to remove dirt or any surface contamination such as paint, grease, oil, sealers, waxes and curing compounds. DriTac 6900 adhesive should not be used over these substances. Sweep or vacuum the subfloor before installation.
- Preparation - All floors should be flat to within 3/16” in 10 ft. or 1/8” in 6 ft.
- Smooth and Flat - Remove any high spots with a terrazzo grinder or Carborundum stone and fill any low spots with a good quality cementitious-based latex patch mix.
- Concrete Subfloors
Concrete should be at least 60 days old. Inspect the concrete before installing flooring over it. First inspect for any wetness at the base of the drywall or for visible signs of moisture on the concrete. Second, test for moisture. Use a Calcium Chloride Method Test or Relative Humidity Test for reliable concrete testing. The results should not exceed 3 lbs., per 1,000 square feet over 24 hours, per the ASTM F1869 Calcium Chloride Method Test, or 75% Relative Humidity (RH), per the ASTM F2170 Relative Humidity Method Test. The maximum reading on concrete for wood installations should not exceed the wood flooring manufacturer’s recommendations. Many wood flooring products can be installed over lightweight concrete (less then 3000 PSI) or gypcrete, providing the surface is properly prepared. Follow the concrete manufacturer’s recommendation for the application of a surface hardener/sealer. Radiant heated subfloors should be turned off 24 hours prior to and during installation to prevent premature curing of the adhesive.
- Wood Installations
DriTac 7300 flows from the pail very easily. For best results, tip the pail carefully to dispense adhesive. Provide adequate ventilation and air movement. Ideally, installation should not begin until all wet work (painting, dry wall materials, etc.) is complete and the heating/air conditioning system is in operation. Jobsite temperature should be between 55 and 90 degrees Fahrenheit. Trowel only TECHNICAL DATA SHEET the amount of adhesive that can be covered in 30 minutes. Install wood flooring into wet adhesive only. Secure the first row with edge blocking or top nail with finishing or sprig nails. Tighten side and end joints and reduce scooting by securing the flooring together with a manufacturer-approved method (painters tape, side blocking, strapping, etc.). Occasionally check for transfer to back of wood flooring. If adhesive transfer is less than 90% to the back of the plank scrape up the adhesive and apply fresh DriTac 6900. Apply weight to any bowed flooring and all floor mounted trim moldings. Remove all defective or unsightly boards immediately. The adhesive is very tenacious and flooring is difficult to remove after the adhesive has cured. Roll the floor with a 100 lb. roller every two to three hours during and immediately after installation.
- Clean Up
- Remove excess urethane adhesive as soon as possible before it dries on the flooring surface. Clean up as you go. Cured urethane adhesive is very difficult to remove.
- Never attempt to remove DriTac 6900 adhesive from tools or flooring with water as this will cause the adhesive to cure more rapidly.
- Remove residue before it dries with DriTac Urethane Adhesive Remover or other flooring manufacturer-approved cleaning method.
- Clean DriTac 6900 adhesive from floor and tools while still wet with DriTac Urethane Adhesive Remover or other flooring manufacturer-approved cleaning method.
- Limitations
Adhesive will not prevent moisture-related damage to wood flooring installations. DriTac 6900 adhesive is affected by humidity more than temperature. High humidity will cause the adhesive to cure faster and low humidity will slow the curing process. Do not use on wet, contaminated or friable substrates. Due to dimensional stability, only engineered plank wood flooring can be installed below-grade, when proper moisture testing has been conducted and the results do not exceed limitations. After 8 to 12 hours, light traffic is allowed. Do not use as a leveling material. Cutback residue must be removed or encapsulated prior to applying adhesive.
- Reuse of Partial Containers
Cover adhesive in the pail with a plastic trash bag or two layers of plastic film. Put lid on tightly. Turn over pail. This will seal contents from outside air. To open container, take off lid, cut plastic and remove thin layer of cured adhesive on surface.
- Nail Assist Installations
Properties
- Physical Form
Safety & Health
- Precautions
- Contains Methylene Diphenyl Diisocyanate. May cause skin and/or eye irritation. May cause dermatitis and allergic responses. Potential skin and/or respiratory sensitizer. Inhalation of vapors may cause irritation and intoxication with headaches, dizziness, and nausea. See Safety Data Sheets for further information. Ingestion may cause irritation.
- KEEP OUT OF REACH OF CHILDREN. Avoid contact with skin, eyes and clothing. Wash thoroughly after handling. Avoid breathing vapors. Use only with adequate ventilation. Use impervious gloves, eye protection and if TLV is exceeded or if used in a poorly ventilated area, use NIOSH/MSMA approved respiratory protection in accordance with applicable federal, state and local regulations. DO NOT take internally. Empty container may contain hazardous residues.
- First Aid
In case of eye contact, flush thoroughly with water for at least 15 minutes. SEEK IMMEDIATE MEDICAL ATTENTION. In case of skin contact, wash affected areas with soap and water. If irritation persists, SEEK MEDICAL ATTENTION. Remove and wash all contaminated clothing. If inhalation causes physical discomfort, remove to fresh air. If discomfort persists, SEEK MEDICAL ATTENTION.
Packaging & Availability
- Packaging Type
- Available Container Size
4-Gallon Pail
- Warranty
This product is warranted to be free of manufacturing defects. If a manufacturing defect is found within one year from the date of purchase, such defective product shall be replaced. No warranty either expressed or implied is made regarding the performance of this product since conditions under which these goods are transported, stored, used or applied are beyond our control. This warranty is made in lieu of all other warranties either expressed or implied and the seller shall not be responsible for consequential, incidental, special or other damages no matter what the cause.
Storage & Handling
- Shelf Life
12 months when stored at 75° F and 50% relative humidity.