Historic Preservation - Technical Procedures

Spectitle:
Replacing Loose, Broken Or Missing Individual Quarry Tiles
Procedure code:
0933002R
Source:
HSR - ICC Building/Wash, DC - Grier Brown Renfrow Architects
Division:
Finishes
Section:
Quarry Tile
Last Modified:
12/03/2015
Details:
Replacing Loose, Broken Or Missing Individual Quarry Tiles
Last Modified:
12/03/2015

REPLACING LOOSE, BROKEN OR MISSING INDIVIDUAL QUARRY TILES


PART 1---GENERAL

1.01 SUMMARY

    A.   This procedure includes guidance on replacing individual
         quarry tiles that are loose, broken or missing.

    B.   See 01100-07-S for general project guidelines to be
         reviewed along with this procedure.  These guidelines
         cover the following sections:

         1.   Safety Precautions

         2.   Historic Structures Precautions

         3.   Submittals

         4.   Quality Assurance

         5.   Delivery, Storage and Handling

         6.   Project/Site Conditions

         7.   Sequencing and Scheduling

         8.   General Protection (Surface and Surrounding)

         These guidelines should be reviewed prior to performing
         this procedure and should be followed, when applicable,
         along with recommendations from the Regional Historic
         Preservation Officer (RHPO).

1.02 REFERENCES

    A.   American Society for Testing and Materials (ASTM),
          
PART 2---PRODUCTS

2.01 MANUFACTURERS

    A.   American Olean Tile

    B.   ProSoCo, Inc.
         
    C.   Southern Grouts and Mortars

    D.  Boston Valley

    E. Ludowici Roof Tiles


2.02 MATERIALS

    A.   Replacement quarry tile matching historic tile in color, size, and other characteristics:  6" x 9" x 1/2"                          (American Olean Tile, Boston Valley Tile, Ludowici), or approved equal. 

    B.   Solvent cleaner such as "Sure Klean Asphalt and Tar
         Remover" (ProSoCo, Inc.)

    C.   Dry-set mortar:  Medium-textured portland cement-based
         (Southern Grouts and Mortars, Inc.)

    D.   Portland cement:  ASTM C150, Type I, grey

    E.   Sand (color to match existing mortar) should conform to
         the following size gradations:

         Sieve No.                     Percentage
                                       Retained

         No.   4                       0
         No.   8                       0
         No.  16                       5-15
         No.  30                      40-60
         No.  50                      75-85
         No. 100                     95-99

    F.   Gravel

    G.   Clean, potable water

2.03 EQUIPMENT

    A.   Chisel

    B.   Stiff bristle brush

    C.   1/4" x 1/4" grooved trowel

    D.   Putty knife

    E.   Joint tools

2.04 MIXES

    NOTE:  PROPORTIONS SHOULD BE MEASURED BY VOLUME.

    A.   Mortar Mix:  Comply with ASTM C 270.

         1.   1 part portland cement

         2.   3 parts sand

         3.   2 parts gravel

         4.   enough water to form a thick, workable mix

    B.   Grout Mix:

         1.   1 part dry-set mortar

         2.   enough water to form a thick, workable mix


PART 3---EXECUTION

3.01 ERECTION, INSTALLATION, APPLICATION

    A.   Mix grout and mortar for 3-5 minutes using a mechanical
         batcher (see mixes in Section 2.04 above).

         NOTE:  MIX ONLY ENOUGH MORTAR OR GROUT TO BE USED WITHIN
         2 HOURS OF FINAL MIXING.  DO NOT RETEMPER OR USE
         PARTIALLY HARDENED MATERIALS.

    B.   Remove damaged tiles using a chisel.  Take care not to
         damaged adjacent tiles.

    C.   Using a putty knife, scrape off old adhesive from floor.

    D.   Remove loose dirt from area using a stiff bristle brush.

    E.   Trowel on a layer of mortar.

    F.   Set tile and gently press into place.  Wipe excess mortar
         immediately from the surface.

    G.   Allow the mortar to cure for 16-24 hours.

    H.   When the tile is firmly set, press grout into the joints,
         filling them flush with the surface.  Tool so that joints
         are slightly concave.

    I.   Wipe excess grout immediately from the surface.

    J.   Keep masonry damp for a minimum of 48 hours or until
         mortar is fully cured.

                             END OF SECTION
 

Last Reviewed 2015-12-03