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Significance and Use
The purpose of this guide is to assist those who wish to restore facades constructed of or finished with dimension stone. It is an aid to owners, building managers, architects, engineers, contractors and others involved with restoring dimension stone.
This guide is not meant to supersede manufacturers' directions and recommendations for the use of their specific products, or written directions from the architect or building owner. When manufacturers' directions are in conflict with this guide, follow their recommendations or consult with their technical staff for further direction.
Prior to undertaking a full-scale repair or cleaning procedure, the methods under consideration for repair, patching or cleaning should be tested on an area not easily visible or on sample stones. The test will assist in judging the effectiveness of the chosen method and permit assessment of potential damage to the building stone. Completely evaluate the success of the sample repairs before undertaking the full-scale cleaning or repair procedure.
1.1 This guide describes materials and procedures for restoring facades constructed of or finished with dimension stone. All of the materials, procedures, and principles are suitable for restoration of historic and nonhistosric structures.
1.2 This guide is not intended to address restoration of interior dimension stone, although many of the materials and procedures may be suitable for interior use.
1.3 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.
1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory requirements prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
C5 Specification for Quicklime for Structural Purposes
C10 Specification for Natural Cement
C91 Specification for Masonry Cement
C119 Terminology Relating to Dimension Stone
C141 Specification for Hydraulic Hydrated Lime for Structural Purposes
C150 Specification for Portland Cement
C207 Specification for Hydrated Lime for Masonry Purposes
C270 Specification for Mortar for Unit Masonry
C1180 Terminology of Mortar and Grout for Unit Masonry
C1242 Guide for Selection, Design, and Installation of Dimension Stone Attachment Systems
C1324 Test Method for Examination and Analysis of Hardened Masonry Mortar
C1329 Specification for Mortar Cement
C1489 Specification for Lime Putty for Structural Purposes
C1515 Guide for Cleaning of Exterior Dimension Stone, Vertical And Horizontal Surfaces, New or Existing
C1521 Practice for Evaluating Adhesion of Installed Weatherproofing Sealant Joints
OSHA DirectiveSTD1-12.026 Abrasive Operations Using Cut Off Wheels and Masonry Saws
UNSPSC Code 11111600(Stone)