CTIOA


CERAMIC TILE INSTITUTE OF AMERICA, INC.

12061 Jefferson Blvd., Culver City, CA 90230-6219





CTIOA FIELD REPORT R5-113-79

SUBJECT: FLOORS, EXTERIOR OR INTERIOR / SOUND RATED

-FLOORS-
EXTERIOR or INTERIOR

Case Numbers:

1.thru 4. Floor systems 5 thru and above supersede 1 thru 4 because of their higher performance and thinner construction.
5.  Cementitious Backer Units over Resilient Underlayment (Wood Subfloor)
6.  Cementitious Backer Units over Resilient Underlayment (Concrete Subfloor)
7.  Mortar Method over Resilient Underlayment (Wood Subfloor)
8.  Mortar Method over Resilient Underlayment (Concrete Subfloor)
9.  Mortar Method over Resilient Underlayment (Wood Subfloor)
10. Mortar Method over Resilient Underlayment (Concrete Subfloor)

TESTED Without Ceilings:

11. Cementitious Backer Units over Resilient Underlayment (Concrete Subfloor)
12. Mortar Method over Resilient Underlayment (Concrete Subfloor)
13. Cementitious Backer Units over Resilient Underlayment (Ceramic Tile Mortar Bed Subfloor and Ceiling)


 

    Recommended Uses:
  • For Sound Transmission Class (STC) rating of 62 (Case #5), 59 (Case #6)
  • For Impact Insulation Class (IIC) rating of 58 (Case #5), 52(Case #6)
  • Wherever a waterproof sound floor is required in conjunction with ceramic tile.
  • Max. performance level - Mod. Comm. (Case #5)   -Lt. comm. (Case #6)
    •
    Requirements:
  • Sub floor to be structurally sound. Deflection not to exceed 1/360 of span, including live and dead load.
  • Cementitious Backer Units taped on both sides
  • Gap between Cementitious Backer Units (1/8") butt-bonded with Latex Portland Cement Bond Coat and 2" wide coated fiberglass tape.
  • Elastomeric Sealant at perimeter of floor and periphery of any protrusion.
  • Waterproofing membrane must be installed in accordance with manufacturer's literature.
    •
    Materials:
  • (1) Subfloor, Wood or Concrete.
  • (3) Fiberglass board 3/8" thick (6-15 lbs. Pcf).
  • (5) Cementitious Backer Units
  • (7) Bond coat--Dry-Set mortar, or latex portland cement mortar.
  • (8) Matting (see list)
  • (9) Waterproof membrane (optional in Dry Areas)
  • (10) Elastomeric or ACOUSTICAL SEALANT
  • (13) 5/8" honeycomb composite (see list)
  • Gypsum board ASTM C36 Type x 5/8"
  • Expansion Joints-(see detail)
  • Grout-specify type
  • Portland Cement -ASTM C-150 Type 1
  • Sand -ASTM C-144
    •
    Preparations by other Trades:
    Substrate
  • Sub floor- 5/8" plywood or 1" nominal boards when on joists 16" o.c., or concrete.
  • Waterproofing
    •
    Ceiling Assembly Below
  • (19) Screws Type S Bugle 7/8".
  • Gypsum board installed in accordance with manufacturer's literature.
  • 3 1/2" (R-11) fiberglass insulation completely packed between joists with no voids.
  • Resilient channels installed in accordance with manufacturer's literature.
  • Accoustical sealant at the perimeter of ceiling gypsum board and the periphery of any protrusion.
    Expansion Joint:
  • Shall be detailed by the architect.
    Installation Specifications:
  • ANSI A 108.5 - for installing tile.

    Recommended Uses:
  • For Sound Transmission Class (STC) rating of 60 (Case #7), 61 (Case #8)
  • For Impact Insulation Class (IIC) rating of 55 (Case #7), 62 (Case #8)
  • Whenever a waterproof sound floor is required in conjunction with ceramic tile.
  • Max. performance level-heavy commercial.
    Requirements:
  • Sub floor to be structurally sound. Deflec tion not to exceed 1/360 of span, including live and dead load.
  • Cleavage membranes required.
  • Minimum 1 1/4" thick mortar bed allowed to cure 24 hours or wet set.
  • Waterproofing membrane must be installed in accordance with manufac turer's literature.
    Materials:
  • (1) Subfloor, Wood or Concrete.
  • (2) Cleavage membrane-(see list)
  • (3) Fiberglass board 3/8" thick (6-15 lbs. Pcf).
  • (4) Mortar-1 part portland cement, 4-5 parts damp sand by volume.
  • Portland Cement -ASTM C-150 Type 1
  • Sand -ASTM C-144
  • (6) Reinforcing 2" x 2" x 16/16" welded wire mesh or equivalent.
  • (7) Bond coat-Dry-Set mortar, or latex portland cement mortar.
  • (8) Matting (see list)
  • (9) Waterproof membrane (optional in Dry Areas)
  • (10) Elastomeric or ACOUSTICAL SEALANT
  • (14) 0.2" thick rubber sheet (see list)
  • Gypsum board ASTM C36 Type x 5/8"
  • Expansion Joints-(see detail)
  • Grout-specify type
    Preparations by other Trades:
    Substrate
  • Sub floor-5/8" plywood or 1" nominal boards when on joists 16" o.c., or concrete.
  • Waterproofing
    Ceiling Assembly Below
  • (19) Screws Type S Bugle 7/8".
  • Gypsum board installed in accordance with manufacturer's literature.
  • 3 1/2" (R-11) fiberglass insulation completely packed between joists with no voids.
  • Resilient channels installed in accordance with manufacturer's literature.
  • Accoustical sealant at the perimeter of ceiling gypsum board and the periphery of any protrusion.
    Expansion Joint:
  • Shall be detailed by the architect.
    Installation Specifications:
  • ANSI A 108.1.

    Recommended Uses:
  • For Sound Transmission Class (STC) rating of 61 (Case #9), 61 (Case #10)
  • For Impact Insulation Class (IIC) rating of 54, 58 (Case #10)
  • Whenever a waterproof sound floor is required in conjunction with ceramic tile.
  • Max. performance level - Hvy. (Case #9) Mod. (Case #10)
    Requirements:
  • Sub floor to be structurally sound. Deflection not to exceed 1/360 of span, including live and dead load.
  • Cleavage membranes required.
  • Minimum 1 1/4" thick mortar bed allowed to cure 24 hours or wet set.
  • Waterproofing membrane must be installed in accordance with manufacturer's literature.
    Materials:
  • (1) Subfloor, Wood or Concrete.
  • (2) Cleavage membrane-(see list)
  • (4) Mortar-1 part portland cement, 4-5 parts damp sand by volume.
  • Portland Cement -ASTM C-150 Type 1
  • Sand -ASTM C-144
  • (6) Reinforcing 2" x 2" x 16/16" gauge welded wire mesh or equivalent.
  • (7) Bond coat-Dry-Set mortar, or latex portland cement mortar.
  • (9) Waterproof membrane (optional in Dry Areas)
  • (10) Elastomeric or ACOUSTICAL SEALANT
  • Gypsum board ASTM C36 Type x 5/8"
  • Expansion Joints-(see detail)
  • Grout-specify type
  • (12) Polyethylene Foam 2.7 pcf.1/4"
  • (13) 5/8" honeycomb composite (see list)
  • (14) 0.2" thick rubber sheet (see list)
    Preparations by other Trades:
    Substrate
  • Sub floor-5/8" plywood or 1" nominal boards when on joists 16" o.c., or concrete.
  • Waterproofing
    Ceiling Assembly Below
  • (19) Screws Type S Bugle 7/8".
  • Gypsum board installed in accordance with manufacturer's literature.
  • 3 1/2" (R-11) fiberglass insulation completely packed between joists with no voids.
  • Resilient channels installed in accordance with manufacturer's literature.
  • Accoustical sealant at the perimeter of ceiling gypsum board and the periphery of any protrusion.
    Expansion Joint:
  • Shall be detailed by the architect.
    Installation Specifications:
  • ANSI A 108.1.

    Recommended Uses:
  • For Sound Transmission Class (STC) rating of 59 (Case #11), 60 (Case #12)
  • For Impact Insulation Class (IIC) rating of 52,54
  • For Sound Rated Floor without Ceilings below.
  • Wherever a waterproof sound floor is required in conjunction with ceramic tile.
  • Max. performance level - light (Case #11) - Heavy (Case #12)
    •
    Requirements:
  • Sub floor to be structurally sound. Deflection not to exceed 1/360 of span, including live and dead load.
  • Cleavage membranes required.
  • Cementitious Backer Units taped on both sides
  • Gap between Cementitious Backer Units (1/8) butt-bonded with Latex Portland Cement Bond Coat and 2" wide coated fiberglass tape.
  • Elastomeric Sealant at perimeter of floor and periphery of any protrusion.
  • Minimum 1 1/4" thick mortar bed allowed to cure 24 hours or wet set.
  • Waterproofing membrane must be installed in accordance with manufacturer's literature.
    •
    Materials:
  • (1) Subfloor, Wood or Concrete.
  • (2) Cleavage membrane-(see list)
  • (3) Fiberglass board 3/8" thick (6-15 lbs. Pcf).
  • (4) Mortar-1 part portland cement, 4-5 parts damp sand by volume.
  • Portland Cement - ASTM C-150 Type 1
  • Sand - ASTM C-144
  • (5) Cementitious Backer Units
  • Expansion Joints-(see detail)
  • Grout-specify type
  • (6) Reinforcing 2" x 2" x 16/16" gauge welded wire mesh or equivalent.
  • (7) Bond coat-Dry-Set mortar, or latex portland cement mortar.
  • (8) Matting (see list)
  • (9) Waterproof membrane (optional in Dry Areas)
  • (10) Elastomeric or ACOUSTICAL SEALANT
  • (13) 5/8" honeycomb composite (see list)
  • (14) 0.2" thick rubber sheet (see list)


    Preparations by other Trades:
    Substrate
  • Sub floor concrete.

    Ceiling Assembly Below
  • (19) Screws Type S Bugle 7/8".
  • Gypsum board installed in accordance with manufacturer's literature.
  • 3 1/2" (R-11) fiberglass insulation completely packed between joists with no voids.
  • Resilient channels installed in accordance with manufacturer's literature.
  • Accoustical sealant at the perimeter of ceiling gypsum board and the periphery of any protrusion.
    Expansion Joint:
  • Shall be detailed by the architect.
    Installation Specifications:
  • ANSI A 108.1.


    Recommended Uses:
  • For Sound Transmission Class (STC) rating of 62
  • For Impact Insulation Class (IIC) rating of 70
  • Wherever a 70 sound floor is required in conjunction with existing floor ceramic tile.
  • Max. performance level - Hvy.
    •
    Requirements:
  • Sub floor to be structurally sound. Deflection not to exceed 1/360 of span, including live and dead load.
  • Cleavage membranes required.
  • Cementitious Backer Units taped on both sides
  • Gap between Cementitious Backer Units (1/8") butt-bonded with Latex Portland Cement Bond Coat and 2" wide coated fiberglass tape.
  • Elastomeric Sealant at perimeter of floor and periphery of any protrusion.
  • Minimum 1 1/4" thick mortar bed allowed to cure 24 hours or wet set.
  • Waterproofing membrane must be installed in accordance with manufacturer's literature.
    •
    Materials:
  • (1) Subfloor, Wood or Concrete.
  • (2) Cleavage membrane-(see list)
  • (4) Mortar-1 part portland cement, 4-5 parts damp sand by volume.
  • Portland Cement - ASTM C-150 Type 1
  • Sand - ASTM C-144
  • (5) Cementitious Backer Units (see list)
  • (6) Reinforcing 2" x 2" x 16/16" gauge welded wire mesh or equivalent.
  • (7) Bond coat-Dry-Set mortar, or latex portland cement mortar.
  • (8) Matting (see list)
  • (9) Waterproof membrane (optional in Dry Areas)
  • (10) Elastomeric or ACOUSTICAL SEALANT
  • Gypsum board ASTM C36 Type X 5/8"
  • Expansion Joints-(see detail)
  • Grout-specify type
  • (12) Polyethylene Foam 2.7 pcf.1/4"


    Preparations by other Trades:
    Substrate
  • Sub floor-5/8" plywood or 1" nominal boards when on joists 16" o.c., or concrete.
  • Waterproofing
    Ceiling Assembly Below
  • (19) Screws Type S Bugle 7/8".
  • Gypsum board installed in accordance with manufacturer's literature.
  • 3 1/2" (R-11) fiberglass insulation completely packed between joists with no voids.
  • Resilient channels installed in accordance with manufacturer's literature.
  • Accoustical sealant at the perimeter of ceiling gypsum board and the periphery of any protrusion.
    Expansion Joint:
  • Shall be detailed by the architect.
    Installation Specifications:
  • ANSI A 108.1.


    MATERIALS LIST:
    (refer to details):

  • Ceramic the-ANSI A137.1 or CTI 69-5 with min. 250 lbs. breaking strength
  • (1) Subfloor to be structurally sound. Deflection shall not exceed 1/360 of the span, including life and dead loads.
  • (2) Cleavage membrane-4 mil polyethylene film or 15 lb. roofing felt.
  • (3) Isolation barrier-3/8" thick fiberglass board, 6-15 pcf.
           Fiber-Lite Corp., Toledo, Ohio (419) 385-5638
           Molded Acoustical Prod., W Easton, Penn. (215) 253-7135
           Hamfab, Inc., Lehighton, Penn., (215) 377-4120
  • (4) Mortar bed - refer to Method F-111.
  • (5) Cementitious Backer Units (Wonderboard)-certified by manufacturer as suitable for intended use.
           Modulars, Inc. PO. Box 216 Hamilton, Ohio 45012 (513) 868-7300
           Glascrete, Inc., Bakersfield, CA (805) 393-0422
           Fiberglass mesh tape is available through your "Wonder-Board" supplier.
  • (6) Reinforcing-2" x 2" x 16/16" gauge welded wire mesh (ASTM A82 and A185).
  • (7) Bond coat-Dry-Set mortar or latex-portland cement mortar on a cured bed.
  • (8) 0.4" thick matting-nylon and carbon black spinerette extruded 630 g/sq. meter (Enkasonic). Install fabric side up.
           AKZO Industrial Systems Co., Asheville, NC (704) 258-5050.
           Polyester Fabric is adhered to 8 above.
  • (9) Waterproof membrane (Optional in dry areas).
  • (10) Elastomeric or acoustical sealant.
    • General Electric Company, Silicone Products Dept.,
             Waterford, New York 12188, (518) 237-3330.
    • Dow Corning Corporation, Midland, Michigan 48640
    • United States Gypsum, 101 South Wacker Drive, Chicago, IL 60606
    • W W Henry Company, 5608 South Soto,
             Huntington Park, Ca. 90255, (213) 583-4961
  • (11) Gypsum board -ASTM C36 Type X 5/8" thick
  • (12) 1/4" thick polyethylene foam 2.7 pcf (Ethafoam #222)
           Dow Chemical U.S.A. Product Sales Manager
           Industrial Foams Development
           Functional Products & Systems Department
           2020 Dow Center
           Midland, Michigan 48640, (517) 636-9002
  • (13) 5/8" thick molded fiberglass honeycomb composite (Peabody Kinetics SR Floorboard)
           Peabody Noise Control
           P.0. Box 655
           Dublin, OH 43017
  • (14) 0.2 thick rubber sheet (Carlisle Bound Rubber Crumb Sheet)
           Carlisle Tire & Rubber
           P.O. Box 99
           Carlisle, PA 17013


      THRESHOLD DETAIL




      SOUND RATED

        INTRODUCTION:

      1. It is believed most of us have either lived in apartments or been in apartments, where almost every move and action of those living above could be heard. To cope with this in our daily living can be most exasperating, it has led to fights, lawsuits and much unpleasantness between neighbors.
      2. Talk of remedying this condition, by changing building codes, has been going on for years. Code changes are a slow process and not much progress was being made.
      3. To obtain immediate results the City of Los Angeles bypassed the building code and passed Los Angeles City Ordinance No. 145,608.
      4. The Ordinance requires a common wall and floor/ceiling between apartments to achieve a Sound Transmission Class (STC) rating of not less than 50 determined in accordance with ASTM Standards E90 or E336 and E413.
      5. Many City Codes require construction of the floor/ceiling assembly between apartments to achieve an Impact Insulation Class (IIC) rating of not less than 50. This as determined by ASTM E90 or E336 and ASTM #492.
      6. The STC rating for walls and floors has not bothered the tile trade so much, but the IIC rating for floors has. Tile have been refused at the job-site because of a lack of laboratory test documents showing an IIC rating of 50 or more.
      7. City Codes have put pressure on us in this area to have our floors tested. This is not being experienced in all areas of the United States. However, model codes, including the one used in this area, now have sound chapters in the appendix and all a city or county has to do is adopt it. This means more and more cities and counties are going to have the sound requirements for apartments and condominiums.
      8. References to Maximum Floor Performance Levels are based on tests conducted in conformance to ASTM C627, and C482.
      9. Materials and methods shall pass CTI's structural tests to be recommended.


        DISCUSSION:

      1. Ceramic Tile Institute, with the financial help of, CTIOA, Tile Council of America and firms and individuals from throughout the United States and Canada, has undertaken a comprehensive test program to achieve sound rated ceramic tile floors.
      2. It is possible to achieve higher STC and IIC ratings with proper modifications, all of which would undoubtedly increase the cost of the floor assembly. It was the desire of the Ceramic Tile Institute to develop a serviceable, cost effective floor systems which could be installed by our C-54 licensed professional tile contractors.
      3. Caution: The entire ceramic tile floor installation system shall pass the criteria for all tests, acoustical and structural, not merely components within the system.
      4. SOME ACCEPTABLE SOUND RATED FLOORS ARE USED IN THIS PUBLICATION.
        5.