Heads up: There are no amended sections in this chapter.

1. Scope:

  1. 1.1 This protocol covers: 1) the standard requirements of mortar for use in mortar set tile systems; 2) the procedures for testing such mortar if these standards are not initially met; and, 3) the approval process for all mortar which successfully meets either the standard requirements and/or the testing requirements.
  2. 1.2 This protocol applies to all mortar which is intended for use in Product Approved mortar set tile systems within the high-velocity hurricane zone jurisdiction.
  3. 1.3 All testing shall be conducted by an approved testing agency and all test reports shall be signed by an authorized signer of the testing agency and/or professional engineer.

2. Referenced Documents:

  1. 2.1 The Florida Building Code, Building
  2. 2.2 ASTM Standards:

    C91Standard Specification for Masonry Cement
    C109Test Method for Compressive Strength of Hydraulic Cement Mortars (Using 2-inch or 50-mm Cube Specimens)
    C144Standard Specification for Aggregate for Masonry Mortar
    C270Standard Specification for Mortar for Unit Masonry
    E380Excerpts from Standard Practice for Use of the International System of Units (SI) (the Modernized Metric System)
  3. 2.3 Application Standards:

    TAS 101Test Method for Static Uplift Test Resistance of Mortar or Adhesive Set Tile Systems

3. Terminology & Units:

  1. 3.1 Definitions—For definitions of terms used in this Protocol, refer to Chapter 2 and Section 1513 of the Florida Building Code, Building; and/or the RCI Glossary of Terms. Definitions from the Florida Building Code, Building shall take precedence.
  2. 3.2 Units—For conversion of U.S. customary units to SI units, refer to ASTM E380.

4. Significance and Use:

  1. 4.1 The requirements outlined herein are intended to provide a guideline for mortar manufacturers in order to obtain a Roofing Component Product Approval for use of their product(s) in approved mortar set tile systems.

5. Standard Requirements for Approval:

  1. 5.1 Mortars for use in mortar set tile systems shall meet the "Proportion Requirements" and "Property Specifications" set forth in ASTM C270 for type "M" masonry cement mortar which is premixed and bagged. The sand: masonry cement mixing ratio shall not be exceed 2.5:1.
  2. 5.2 Alternatively, mortars for use in mortar set tile systems shall consist of not greater than 21/2 parts ASTM C144 uniformly graded sand or 21/2 parts ASTM C332 lightweight aggregate in combination with one part ASTM C91, type "M" masonry cement which is premixed and bagged.

    1. 5.2.1 Mortars formulated as noted in Section 5.2 using lightweight aggregate are not required to meet the minimum compressive strength of those mortars from Section 5.1; however, the compressive strength shall be not less than 350 psi, as determined in compliance with ASTM C109.
  3. 5.3 All mortars which meet the standard requirements set forth in Sections 5.1 or 5.2 shall be approved for use with flat tile profiles only based on submission of the following:

    • completed application for roofing component Product Approval;
    • certification from an approved testing agency that the mortars, or components thereof, meet the requirements set forth in Sections 5.1 or 5.2, respectively;
    • street address where periodic quality control inspections may be carried out by a representative from the authority having jurisdiction;
    • a sample of the premixed bag; and,
    • a copy of the handling and mixing instructions.
  4. 5.4 Any mortars which deviate from the standard requirements set forth in Sections 5.1 or 5.2, either through differing proportions or a substitution of masonry cement, sand or lightweight aggregate, and any mortars intended for use with low and high profile tile shall be tested as set forth in Section 6 prior to receiving roofing component Product Approval.

    1. 5.4.1 Mortars which require testing, as noted in Section 5.2, and use lightweight aggregate as a component thereof are not required to meet the minimum compressive strength of those mortars from Section 5.1; however, the compressive strength shall be not less than 350 psi, as determined in compliance with ASTM C109.

6. Testing Requirements:

  1. 6.1 Any mortars which deviate from the standard requirements set forth in Sections 5.1 or 5.2, either through differing proportions or a substitution of masonry cement, sand or lightweight aggregate, and any mortars intended for use with low or high profile tile shall be tested in compliance with TAS 101 with the following modifications:

    1. 6.1.1 Testing shall include 5 samples each desired tile profile.
    2. 6.1.2 The static uplift testing shall result in the following minimum characteristic resistance loads (F').
    3. 6.1.3 The moment calculations shall be omitted from the requirements of TAS 101.
    Tile TypeMinimum Characteristic
    Resistance Load (lbf)
    High Profile30
    Low Profile26
    Flat50
  2. 6.2 On successful completion of this testing, the manufacturer shall submit the applicable items listed in Section 5.3, together with the final test report(s), from TAS 101 testing, to receive a roofing component Product Approval.

7. Mortar Set Tile System Manufacturers:

  1. 7.1 Mortar set tile system manufacturers may interchange any approved, premixed, bagged mortar product into mortar set tile system(s).
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