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: | 02/24/2012 |
Details: | Replacing Loose, Broken Or Missing Individual Quarry Tiles 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), 100 Barr Drive, West Conshohocken, PA 19428, (610) 832-9585 or FAX (610) 832-9555. PART 2---PRODUCTS 2.01 MANUFACTURERS A. American Olean Tile 1000 Cannon Ave. Lansdale, PA 19446-0271 215/855-1111 B. ProSoCo, Inc. 755 Minnesota Avenue P.O. Box 1578 Kansas City, KS 66117 800/255-4255 or 913/281-2700 C. Southern Grouts and Mortars 1502 S.W. 2nd Place Pompano Beach, FL 33060 800/641-9247 2.02 MATERIALS A. Replacement quarry tile: 6" x 9" x 1/2" (American Olean Tile), 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 such as "#759 Floor Mix" (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 |
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