TEC® Double Duty™ Plus White Ceramic Tile Adhesive (123)

Maintains at least 10 lb. (4.5 kg) static load in shear at 120°F (49°C) for 24 hours.

• Best for marble, natural stone and ceramic tile
• Installlls up to 20" x 20" (500 x 500 mm) porcelain with no slip
• Quick grab, no slip up to 7 pounds per square foot (34.17 kgs/m2)
• Strong, resilient bonds
• Exceeds ANSI A136.1, Type I and Type II specifications
• Contributes to LEED® project points

• The substrate must be structurally sound, clean, dry and plumb.Remove all grease, sealers, dirt, wallpaper, etc. Scarify all painted surfaces; loose or “squeaky” floors should be glued, nailed or screwed down tightly.
• All tiling materials, room and adhesive should be at a minimum 50°F (10°C) for 24 hours before and 48 hours after Installation.
• Remove any dust from tile backs. Pre-measure and pre-cut all tile.
• Spread adhesive using the flat side of trowel, applying even pressure, then comb the surface with the trowel’s notched side to establish an even setting bed. Press individual tile or tile sheets into adhesive, using care to maintain accurate joint alignment and spacing.
• For trowel sizes ¼" x ¼" x ¼" (6 x 6 x 6 mm) or larger move tiles in direction perpendicular to the notched trowel ridges ¼" (6 mm) and back, to achieve optimum coverage of tiles with adhesive, avoiding air pockets under the tile.
• If adhesive skins over (typically 30-35 minutes); remove and re-apply fresh adhesive.

Note: It is the sole responsibility of the installer to determine the suitability and compatibility of the adhesive for the intended application.

• Clean-up: Clean tools, hands, and excess materials from face of tile, while adhesive is still fresh, with warm soapy water. Dried adhesive must be removed with mineral spirits.
• Grouting/Curing: Tile may be grouted as soon as adhesive is set and tiles are held firmly in place, typically after 6 hours for standard wall tiles, under ideal conditions. 6" x 6" (150 x 150 mm) floor tiles or larger usually require a minimum of 24 hours to set.

Note: Colder temperatures, high humidity, use of large semi-vitreous tiles, or non-porous substrates and non-porous tile will extend set times. The use of TEC brand grouts is highly recommended.

• Not for exterior use.
• Do not use with PVC heating mats or coils, polyethylene membranes, or other membranes.
• Do not use on shower floors or pans, saunas, in steam showers, swimming pools, or any place that will receive standing water.
• Not for use over anti-fracture & waterproofing membranes, sheets or mats.
• Do not use for setting fixtures or green marble. For green marble, use TEC AccuColor EFX® Epoxy Grout and Mortar.
• Do not use over surfaces such as tempered hardboard, pressboard, cement asbestos board, particle board, oriented strand board, lauan plywood, gypsum patches, synthetic flooring (linoleum, asphalt and vinyl tile) or similar unstable substrates.
• Do not use for underwater applications or where hydrostatic pressure exists.
• Do not use for floor applications using tiles with lugs; use an appropriate TEC mortar product.
• Extensive laboratory testing has shown that marble installlled with Double Duty Plus will return to its original color after water in the adhesive has evaporated, typically 3 to 4 weeks.
• Note: Marble, a quarried material, may vary in porosity and chemical composition. TEC recommends testing the selected marble prior to installation for diskoloration using the following method: Spread adhesive on a marble sample and allow to cure for 3 to 4 weeks. Check for diskoloration.

When properly prepared, suitable substrates include:

• Concrete—well cured
• Cementitious backer units (CBU)
• Exterior Grade Plywood—APA Grade Trademarked Exposure 1 or better; Do not use to installll marble tile on plywood.
• Existing ceramic tile
• Coated glass mat backerboard
• Gypsum wallboard (dry areas)
• Water resistant gypsum wallboard
• Cured Portland cement plaster
• Masonry

Substrate Preparation: It is required that all surfaces be structurally sound and free from any contaminants that may inhibit bond, including oil, grease, dust, loose or peeling paint, sealers, floor finishes, curing compounds or contaminants.

1. Exterior Grade Plywood Floors: Wood subflooring must be structurally sound and securely fastened with screw type or ring shank nails and adhesive. Plywood flooring should be free from dust, dirt, oil, grease, etc. Follow TCNA Installation Detail F142.
2. Cementitious Backer Units: Follow manufacturer’s instructions.
3. Coated Glass Mat Backerboard: Reference TCNA Installation Details F146, W245, B419 or B420.
4. Existing Ceramic Tile: Remove surface contaminants. Mechanically abrade with carborundum stone. Rinse and allow to dry. Reference TCNA Installation Details TR712 or TR713. 

• Protect from freezing. Store in cool, dry location. Do not store open containers.
• Freeze/thaw stable to -5°F (-20°C). If frozen, slowly bring material back to room temperature and stir before using.
• Shelf Life: Maximum 1 year from date of manufacture in properly stored, unopened package.