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Historic Preservation - Technical Procedures

Spectitle:

Replacing Damaged Or Missing Marble Baseboards

Procedure code:

0445507R

Source:

Hsr - Departmental Auditorium Bldg/Wash, Dc - Grier, Brown..

Division:

Masonry

Section:

Marble

Last Modified:

06/19/2012

Details:

Replacing Damaged Or Missing Marble Baseboards



REPLACING DAMAGED OR MISSING MARBLE BASEBOARDS


PART 1---GENERAL

1.01 SUMMARY

    A.   This procedure includes guidance on replacing damaged or
         missing sections of marble baseboards to match original
         and existing surrounding marble.

    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)
          www.astm.org

    B.   American National Standards Institute, Inc. (ANSI)
          www.ansi.org


PART 2---PRODUCTS

2.01 MANUFACTURERS

    A.  Bostik
         www.bostik-us.com

    B.  Custom Building Products
         www.custombuildingproducts.com

    C.  Hillyard, Inc.
         www.hillyard.com

    D.  Mapei Corporation
         www.mapei.com

    E.  H.B. Fuller Co.
         www.hbfuller.com

2.02 MATERIALS

    A.   New marble to match existing surrounding marble complying
         with ASTM C97-47.

    B.   Dry-set mortar such as "Granirapid" Fast-curing, two-
         component mortar (Mapei Corporation), "VersaBond Fortified
         Thin-set Mortar" (Custom Building Products), "Tilemate Premium
         #710 (white)" (Bostik), or approved equal.

         1.   Complying with ANSI A118.1.

         2.   Installation should conform with A108.5

    C.   Cleaning Solution for Marble:  Mix 1/8 cup soft soap such
         as "Ivory Liquid" (Procter & Gamble), 1 quart distilled
         warm water, and 1/8 cup household ammonia.

         1.   Measure materials by volume

         2.   Mix ingredients in a clean container (non-metallic)

    D.   Marble Polish such as "Onex-Seal II" (Hillyard,
         Inc.), or approved equal.

    E.   Clean, potable water

    F.   Clean, soft cloths

2.03 EQUIPMENT

    A.   Chisel

    B.   Rubber mallet

    C.   Sponges

    D.   Trowel

    E.   Stiff, fiber bristle brush


PART 3---EXECUTION

3.01 ERECTION, INSTALLATION, APPLICATION

    A.   Remove and Replace Damaged Marble:

         1.   Remove existing mortar and clean all areas to be
              patched.  Remove dust and debris from the area
              using a stiff, fiber bristle brush.

         2.   Cut back damaged marble to sound stonework.

         3.   Cut replacement marble to fit uniformly using the
              smallest joints possible.  Marble should match
              original and existing surrounding marble closely in color,
              thickness and texture in overall appearance.  Wherever possible, use
              existing matching marble which may have been
              stockpiled in the building from previous work.

         4.   Set marble piece in dry-set mortar following
              manufacturer's instructions.  Do not extend mortar
              beyond edge of patch area.

         5.   While the mortar is still soft and plastic, adjust
              new piece as necessary into its final location.

         6.   Remove any excess mortar from the face of adjacent
              surfaces.

         7.   Repair any adjacent surfaces that may have been
              damaged during the repair work.

         8.   Support new marble pieces with boards to secure
              them in place until the mortar has cured.

    B.   Clean and Polish the Marble:

         1.   Apply cleaning solution using a clean cloth or
              sponge.  Wash in small overlapping areas.

         2.   Rinse cleaned area with clean, clear water by
              wiping the surface with a soft cloth.

         3.   Dry the surface using a clean chamois or soft, dry
              cloth.

         4.   Repolish any areas where polish is damaged or worn
              off.

                         END OF SECTION
 


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