A. This procedure includes guidance on re-polishing eroded
areas in exterior granite.
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
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).
A. Product Data: Submit manufacturer's technical data for
each product indicated including recommendations for
their application and use. Include test reports and
certifications substantiating that products comply with
1.03 PROJECT/SITE CONDITIONS
A. Environmental Requirements: Perform work only in dry and
otherwise favorable weather conditions. Protect repaired
stone against freezing or excessively rapid drying for at
least 48 hours after being laid; no masonry shall be laid
when temperature is below 32 degrees F on a rising thermometer or
below 40 degrees F on a falling thermometer.
B. Existing Conditions: Contractor shall take whatever
precautions are necessary to protect the existing
building from damage resulting from work under this
A. Grinder with silicone carbide grinding stones or diamond
B. Aluminum oxide polishing compound
C. Felt pads
D. Clean, soft cloths
E. Clean, potable water
3.01 ERECTION, INSTALLATION, APPLICATION
NOTE: THIS WORK SHALL ONLY BE PERFORMED BY A SKILLED GRANITE
A. Grind granite down until an even plane is achieved.
Feather out to unaffected surface as required to avoid
granite having dished appearance. Use right angle water
feed grinder with successively finer diamond disks (#60
to #3500) or silicon carbide grinding stones (36 to 400
B. Polish to match existing sheet of granite. Use acid free
aluminum oxide polishing compound with felt pad.
CAUTION: POLISHING COMPOUNDS CONTAINING FLUORIC ACID
WILL EVENTUALLY ETCH THE GRANITE SURFACE, RESULTING IN A
DIMINUTION OF GLOSS.