ExtraBond – Polymer Modified Thin Set

Description and Uses

ATRIA ExtraBond is an all-purpose polymer modified thin-set mortar for the installation of a wide variety of tiles and stones. Formulated with the most sophisticated polymers and additives to provide better bond strength on most surfaces. Offers excellent performance for commercial and residential jobs in both interior and exteriors. Ideal for installing ceramic tiles, quarry tiles, glazed tiles, porcelain, mosaics, marble, granite and dimension stones. Meets and Exceeds ANSI A118.4 and ANSI A118.11 without the need for additives.

  • Ceramic Tile Porcelain
  • Quarry Tile Mosaics
  • Glazed Tile Marble
  • Granite Dimension Stones


Appropriate Surfaces

ATRIA Extrabond can be used over surfaces properly prepared of cured concrete, cement mortar beds, bricks, dry gypsum boards (Interior only), leveling coats, existing tile or marble (Interior only) and exterior grade plywood (For interior and residential or light commercial only). Surfaces must be dry and free of any dirt or material that may difficult the adherence of the mortar.

  • Concrete (28 days cured)
  • Cement Mortar Beds
  • Bricks
  • Gypsum Boards (Interior only)
  • Leveling Coarts
  • Existing Tile or Marble (Interior only)
  • Exterior Grade Plywood (For interior and residential or light commercial only)

How to apply

For each 50 lbs. (23kg) bag add 1.6 gallons (6 liters) of fresh water at room temperature and mix. A plastic and homogeneous dough should be obtained. Let it rest for 10 minutes and mix again before use. The mix should have sufficient consistency to be applied with a spatula. Extend ATRIA Extrabond manually over the surface with the smooth side of the spatula first and then use the toothed side to give the ATRIA Extrabond a thickness of 3/16” inches or 5 millimeters.


Each 50 lbs. (23kg) bag will cover from 55 square feet (5.10-meter square) to 70 square feet (6.50-meter square) using a 1/4 x 1/4 x 1/4-inch (6 x 6 x 6 mm) trowel.


The minimum cure is achieved after 24 hours, depending on temperature and humidity. Grouting can be done after 24 hours.


Only water is needed to remove excess of uncured mortar and clean tools.


It can be stores free of humidity in its original package for up to 12 months. Do not let water to contact the product until time of use.

ATRIA reserve the right to change products and specifications without notice. All technical data provided here are based on test results from independent laboratories. We recommend seeking for certification to anyone who is interested in verifying the accuracy of these results.

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ATRIA Extrabond should not be applied over asphalt coatings, surfaces covered with vinyl, wood, asbestos- cement plates, painted surfaces, metal, glass or plastic. It should be used in temperatures above 41 degrees Fahrenheit or 5 degrees Celsius. The adhesive must be protected from freezing for the first 72 hours. Do not use for applications where the material will be subject to water immersion. Additional preparation instructions may be found in the technical and safety data sheet.