SureBond Unsanded Thin-Set Mortar

Product ID: TDS-195

Pure coat for setting tiles using the mortar bed method. Water-retentive formula eliminates the need to soak tiles. Ideal for setting fixtures and decorative items.

  • Meets ANSI A118.1 without additive
  • Meets ANSI A118.4 and A118.11 when mixed with Thin-set Mortar Admix

Coverage Chart

SQUARE FOOT COVERAGE PER 40 LB BAG (SQUARE METER PER 18.2 KG)

Chart for estimating purposes. Coverage may vary based on installation practices and jobsite conditions. For more trowel sizes, please use the material calculator at CustomBuildingProducts.com or contact CUSTOM Technical Services at (800) 282-8786.

Trowel Size

Min Coverage

Max Coverage

3/16" x 5/32" (5 x 4 mm) V-Notch

150 sq. ft. (15.7 M²)

170 sq. ft. (15.7 M²)

Mortar coverage between the substrate and tile underside is required to be ≥80% for dry areas and ≥95% for wet areas and exteriors with all tile edges properly supported with mortar and in a minimum of 3/32” (2.38 mm) and a maximum of ¼” (6mm) for mortars without an ANSI “H” rating. Note: Larger tiles, tiles with deep underside patterns and ungauged natural stone tiles may require larger notch sizes and may need to be flat back-troweled (formerly back buttered) or notched-back troweled to achieve proper coverage and mortar support. CUSTOM recommends testing to confirm adequate bonding mortar coverage. CUSTOM recommends testing to confirm adequate bonding mortar coverage.

When back troweling, consider the tile’s underside pattern and depth to estimate thickness and usage to add to your estimate. For achieving proper mortar coverage see the following video: Trowel & Error. (Also available in Spanish and Russian.) For information

For achieving proper mortar coverage see the following video: Trowel & Error. (Also available in Spanish and Russian.) For information regarding back troweling, refer to The National Tile Contractors Association / Reference Manual & Flat Back & Notched Back - Troweling (TileTVS3 22 08)

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