ASTM E2260-21a

Standard Guide for Repointing (Tuckpointing) Historic Masonry

SIGNIFICANCE AND USE
4.1 Repointing masonry improves weather resistance, reduces water penetration, maintains structural and visual integrity, and prolongs the life of the building by allowing a mortar joint to shed water and avoid the accumulation and penetration of rainwater between mortar and masonry units.  
4.2 This guide provides for the selection of the most effective methods appropriate for repointing masonry based upon the following parameters:  
4.2.1 Determination of joints to be repointed.  
4.2.2 Evaluation of in-situ masonry.  
4.2.3 Evaluation of techniques for removal of mortar.  
4.2.4 Determination of appropriate repointing mortar.  
4.2.5 Selection of repointing mortar.  
4.2.6 Establishing the method of execution of the work.  
4.2.7 Visual inspection of the work.
SCOPE
1.1 This guide applies only to existing historic masonry construction. For purposes of this guide historic masonry is intended to refer to buildings that have significant historic, architectural, cultural or social meaning and are constructed of masonry materials. Similar techniques and evaluation should be employed for non-historic masonry, but are not addressed in this guide.  
1.2 This guide outlines procedures for repointing historic masonry and is intended to provide guidelines for the user to establish project-specific requirements for repointing of historic masonry.  
1.3 This guide only pertains to masonry units: brick, terra cotta, stone, cast stone, and concrete brick laid in mortar, and may or may not be appropriate for other masonry units.  
1.4 This guide addresses repointing (tuckpointing) as defined in 3.1.3.  
1.5 When considering repointing, especially on masonry of artistic, architectural, cultural, or historical significance, guidance from a specialist experienced in historic masonry and repointing should be sought.  
1.6 This guide does not address pointing styles or profiles used on masonry or the methods of producing them.  
1.7 Additional repairs that may impact the structural integrity of the masonry may necessitate that a structural stability analysis be completed prior to the execution of any work.  
1.8 Following this guide may involve hazardous materials, operations, and equipment. 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, health, and environmental practices and determine the applicability of regulatory requirements prior to use.  
1.9 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

General Information

• Status: Published
• Publication Date: 14-Oct-2021
• ICS: 91.080.30 - Masonry
• Technical Committee: E06 - Performance of Buildings
• Drafting Committee: E06.24 - Building Preservation and Rehabilitation Technology

Standards Content (Sample)

This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the
Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Designation: E2260 − 21a
Standard Guide for
1
Repointing (Tuckpointing) Historic Masonry
This standard is issued under the fixed designation E2260; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope ization established in the Decision on Principles for the
Development of International Standards, Guides and Recom-
1.1 This guide applies only to existing historic masonry
mendations issued by the World Trade Organization Technical
construction. For purposes of this guide historic masonry is
Barriers to Trade (TBT) Committee.
intended to refer to buildings that have significant historic,
architectural, cultural or social meaning and are constructed of
2. Referenced Documents
masonry materials. Similar techniques and evaluation should
2
be employed for non-historic masonry, but are not addressed in 2.1 ASTM Standards:
this guide. C67/C67M Test Methods for Sampling and Testing Brick
and Structural Clay Tile
1.2 This guide outlines procedures for repointing historic
C140/C140M Test Methods for Sampling and Testing Con-
masonry and is intended to provide guidelines for the user to
crete Masonry Units and Related Units
establish project-specific requirements for repointing of his-
C170/C170M Test Method for Compressive Strength of
toric masonry.
Dimension Stone
1.3 This guide only pertains to masonry units: brick, terra
C270 Specification for Mortar for Unit Masonry
cotta, stone, cast stone, and concrete brick laid in mortar, and
C780 Test Method for Preconstruction and Construction
may or may not be appropriate for other masonry units.
Evaluation of Mortars for Plain and Reinforced Unit
Masonry
1.4 This guide addresses repointing (tuckpointing) as de-
C1324 Test Method for Examination and Analysis of Hard-
fined in 3.1.3.
ened Masonry Mortar
1.5 When considering repointing, especially on masonry of
C1713 Specification for Mortars for the Repair of Historic
artistic, architectural, cultural, or historical significance, guid-
Masonry
ance from a specialist experienced in historic masonry and
E631 Terminology of Building Constructions
repointing should be sought.
E1857 Guide for Selection of Cleaning Techniques for
1.6 This guide does not address pointing styles or profiles
Masonry, Concrete, and Stucco Surfaces
used on masonry or the methods of producing them.
2.2 Other Documents:
1.7 Additional repairs that may impact the structural integ-
BIA Technical Note 1 Hot and Cold Weather Construction,
3
rity of the masonry may necessitate that a structural stability
June 2018
analysis be completed prior to the execution of any work.
BIA Technical Note 46 Maintenance of Brick Masonry,
3
December 2017
1.8 Following this guide may involve hazardous materials,
The Secretary of the Interior’s Standards for the Treatment
operations, and equipment. This standard does not purport to
4
of Historic Properties, 2017
address all of the safety concerns, if any, associated with its
5
TMS 602 Specifications for Masonry Structures
use. It is the responsibility of the user of this standard to
establish appropriate safety, health, and environmental prac-
tices and determine the applicability of regulatory require-
2
ments prior to use.
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM
1.9 This international standard was developed in accor-
Standards volume information, refer to the standard’s Document Summary page on
dance with internationally recognized principles on standard-
the ASTM website.
3
Available from The Brick Industry Association (BIA), 12007 Sunrise Valley
1
This guide is under the jurisdiction of ASTM Committee E06 on Performance Dr., Suite 430, Reston, VA 20191, https://www.gobrick.com.
4
of Buildings and is the direct responsibility of Subcommittee E06.24 on Building Available from Technical Preservation Services, National Park Service, U.S.
Preservation and Rehabilitation Technology. Department of the Interior, 1849 C Street NW, Mail Stop 7243, Washington, DC
Current edition approved Oct. 15, 2021. Published October 2021. Originally 20240, https://www.nps.gov/tps/standards.htm.
5
approved in 2003. Last previous edition approved in 2021 as E2260 – 21. DOI: Available fromThe Masonry Society (TMS), 105 South Sunset Street, Suite Q,
10.1520/E2260-21A. Longmont, CO 80501-6172, https://www.masonrysociety.org.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C7
...

This document is not an ASTM standard and is intended only to provide the user of an ASTM standard an indication of what changes have been made to the previous version. Because
it may not be technically possible to adequately depict all changes accurately, ASTM recommends that users consult prior editions as appropriate. In all cases only the current version
of the standard as published by ASTM is to be considered the official document.
Designation: E2260 − 21 E2260 − 21a
Standard Guide for
1
Repointing (Tuckpointing) Historic Masonry
This standard is issued under the fixed designation E2260; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision. A number in parentheses indicates the year of last reapproval. A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope
1.1 This guide applies only to existing historic masonry construction. For purposes of this guide historic masonry is intended to
refer to buildings that have significant historic, architectural, cultural or social meaning and are constructed of masonry materials.
Similar techniques and evaluation should be employed for non-historic masonry, but are not addressed in this guide.
1.2 This guide outlines procedures for repointing historic masonry and is intended to provide guidelines for the user to establish
project-specific requirements for repointing of historic masonry.
1.3 This guide only pertains to masonry units: brick, terra cotta, stone, cast stone, and concrete brick laid in mortar, and may or
may not be appropriate for other masonry units.
1.4 This guide addresses repointing (tuckpointing) as defined in 3.1.3.
1.5 When considering repointing, especially on masonry of artistic, architectural, cultural, or historical significance, guidance from
a specialist experienced in historic masonry and repointing should be sought.
1.6 This guide does not address pointing styles or profiles used on masonry or the methods of producing them.
1.7 Additional repairs that may impact the structural integrity of the masonry may necessitate that a structural stability analysis
be completed prior to the execution of any work.
1.8 Following this guide may involve hazardous materials, operations, and equipment. 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, health, and environmental practices and determine the applicability of regulatory requirements prior to use.
1.9 This international standard was developed in accordance with internationally recognized principles on standardization
established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued
by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents
2
2.1 ASTM Standards:
1
This guide is under the jurisdiction of ASTM Committee E06 on Performance of Buildings and is the direct responsibility of Subcommittee E06.24 on Building
Preservation and Rehabilitation Technology.
Current edition approved April 15, 2021Oct. 15, 2021. Published May 2021October 2021. Originally approved in 2003. Last previous edition approved in 20122021 as
ɛ1
E2260 – 03 (2012)E2260 – 21. . DOI: 10.1520/E2260-21.10.1520/E2260-21A.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or contact ASTM Customer Service at [e-mail]. For Annual Book of ASTM Standards
volume information, refer to the standard’s Document Summary page on the ASTM website.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959. United States
1

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E2260 − 21a
C67/C67M Test Methods for Sampling and Testing Brick and Structural Clay Tile
C140/C140M Test Methods for Sampling and Testing Concrete Masonry Units and Related Units
C170/C170M Test Method for Compressive Strength of Dimension Stone
C270 Specification for Mortar for Unit Masonry
C780 Test Method for Preconstruction and Construction Evaluation of Mortars for Plain and Reinforced Unit Masonry
C1324 Test Method for Examination and Analysis of Hardened Masonry Mortar
C1713 Specification for Mortars for the Repair of Historic Masonry
E631 Terminology of Building Constructions
E1857 Guide for Selection of Cleaning Techniques for Masonry, Concrete, and Stucco Surfaces
2.2 Other Documents:
3
BIA Technical Note 1 Hot and Cold Weather Construction, June 2018
3
BIA Technical Note 46 Maintenance of Brick Masonry, December 2017
4
The Secretary of the Interior’s Standards for the Treatment of Historic Properties, 2017
5
TMS 602 Specifications for Masonry Structures
3
Available from The Brick Industry Association (BIA), 12007 Sunrise Valley Dr., Suite 430, Reston, VA 20191, https://www.gobrick.org.https://www.gobrick.com.
4
Available
...