ASTM C1481-00(2006)

Standard Guide for Use of Joint Sealants with Exterior Insulation and Finish Systems (EIFS)

SIGNIFICANCE AND USE
The intent of this guide is to provide information and guidelines for the selection of materials for joint seals in, or adjacent to, EIFS.
Joints need to be designed for the expected movements and construction tolerances so an appropriate joint width can be established.
SCOPE
1.1 This guide describes the use of single and multi-component, cold-applied joint sealants, or precured sealant systems for joint sealing applications, or both, in buildings using exterior insulation and finish systems (EIFS) on one or both sides of the joint. Refer to for joint seal geometries.
1.2 The elastomeric sealants described by this guide meet the requirements of Specifications C 834, C 920, or C 1311.
1.3 The values stated in SI units are to be regarded as the standard. The values given in parentheses are provided for information only.
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 limitations prior to use. For specific hazard statements, see Notes 1 and 2.
1.5 There are no ISO standards similar or equivalent to this ASTM standard.

General Information

• Status: Historical
• Publication Date: 31-Dec-2005
• ICS: 91.100.50 - Binders. Sealing materials
• Technical Committee: C24 - Building Seals and Sealants
• Drafting Committee: C24.10 - Specifications, Guides and Practices

Relations

• Replaces: ASTM C1481-00 - Standard Guide for Use of Joint Sealants with Exterior Insulation and Finish Systems (EIFS)
• Effective Date: 01-Jan-2006
• Replaced By: ASTM C1481-11 - Standard Guide for Use of Joint Sealants with Exterior Insulation and Finish Systems (EIFS)
• Effective Date: 01-Jul-2011
• Referred By: ASTM C1535-05(2023) - Standard Practice for Application of Exterior Insulation and Finish Systems Class PI
• Effective Date: 01-Jan-2006
• Referred By: ASTM C1193-16(2023) - Standard Guide for Use of Joint Sealants
• Effective Date: 01-Jan-2006
• Referred By: ASTM C1472-16(2022) - Standard Guide for Calculating Movement and Other Effects When Establishing Sealant Joint Width
• Effective Date: 01-Jan-2006
• Referred By: ASTM C1397-13(2019) - Standard Practice for Application of Class PB Exterior Insulation and Finish Systems (EIFS) and EIFS with Drainage
• Effective Date: 01-Jan-2006

Standards Content (Sample)

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
Contact ASTM International (www.astm.org) for the latest information
Designation:C1481–00 (Reapproved 2006)
Standard Guide for
Use of Joint Sealants with Exterior Insulation and Finish
Systems (EIFS)
This standard is issued under the fixed designation C1481; 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 C1299 Guide for Use in Selection of Liquid-Applied Seal-
ants
1.1 This guide describes the use of single and multi-
C1311 Specification for Solvent Release Sealants
component, cold-applied joint sealants, or precured sealant
C1382 Test Method for Determining Tensile Adhesion
systems for joint sealing applications, or both, in buildings
Properties of Sealants When Used in Exterior Insulation
using exterior insulation and finish systems (EIFS) on one or
and Finish Systems (EIFS) Joints
both sides of the joint. Refer to 10.1 for joint seal geometries.
C1397 Practice for Application of Class PB Exterior Insu-
1.2 The elastomeric sealants described by this guide meet
lation and Finish Systems (EIFS) and EIFS with Drainage
the requirements of Specifications C834, C920,or C1311.
C1472 Guide for Calculating Movement and Other Effects
1.3 The values stated in SI units are to be regarded as the
When Establishing Sealant Joint Width
standard. The values given in parentheses are provided for
2.2 ANSI Standard:
information only.
American National Standard for Exterior Insulation and
1.4 This standard does not purport to address all of the
Finish Systems (EIFS)
safety concerns, if any, associated with its use. It is the
responsibility of the user of this standard to establish appro-
3. Terminology
priate safety and health practices and determine the applica-
3.1 Definitions:
bility of regulatory limitations prior to use. For specific hazard
3.1.1 Refer to Terminology C717 for definitions of the
statements, see Notes 1 and 2.
following terms used in this guide: bicellular sealant backing,
1.5 There are no ISO standards similar or equivalent to this
bond breaker, bridge sealant joint, butt sealant joint, chemi-
ASTM standard.
cally curing sealant, closed cell sealant backing, compatibility,
2. Referenced Documents compatible materials, cure, elastomeric, elongation, fillet seal-
2 ant joint, joint, lap sealant joint, latex sealant, modulus,
2.1 ASTM Standards:
non-sag sealant, open cell sealant backing, primer, seal,
C717 Terminology of Building Seals and Sealants
sealant, sealant backing, shelf-life, solvent-release sealant,
C719 Test Method for Adhesion and Cohesion of Elasto-
shrinkage, substrate, tooling, tooling time, working life (pot
meric Joint Sealants Under Cyclic Movement (Hockman
life).
Cycle)
3.1.2 Refer to Terminology C1397 for definitions of the
C794 Test Method for Adhesion-in-Peel of Elastomeric
following terms used in this guide: accessories, base coat,
Joint Sealants
cure, dry, durability, embed, expansion joint, exterior insula-
C834 Specification for Latex Sealants
tion and finish system (EIFS), finish coat, lamina, nonmetallic
C920 Specification for Elastomeric Joint Sealants
reinforcing mesh, primers, reinforced base coat, substrate,
C1193 Guide for Use of Joint Sealants
texture, thermal insulation board, wrap, wrapping.
4. Significance and Use
ThisguideisunderthejurisdictionofASTMCommitteeC24onBuildingSeals
and Sealants and is the direct responsibility of Subcommittee C24.10 on Specifi-
4.1 The intent of this guide is to provide information and
cations, Guides and Practices.
guidelines for the selection of materials for joint seals in, or
Current edition approved Jan. 1, 2006. Published January 2006. Originally
approved in 2000. Last previous edition approved in 2000 as C1481-00. DOI: adjacent to, EIFS.
10.1520/C1481-00R06.
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 Available from American National Standards Institute (ANSI), 25 W. 43rd St.,
the ASTM website. 4th Floor, New York, NY 10036.
Copyright © ASTM International, 100 Barr Harbor Drive, PO Box C700, West Conshohocken, PA 19428-2959, United States.
C1481–00 (2006)
4.2 Joints need to be designed for the expected movements
and construction tolerances so an appropriate joint width can
be established.
DESIGN CONSIDERATIONS
5. General
5.1 The major components of a joint seal in, or adjacent to,
EIFS that should be considered when selecting or using
sealants are as follows: EIFS substrate, primer, sealant backing
or bond-breaker, and sealant (see Figs. 1-11).
6. EIFS Substrate
6.1 Joint Location and Configuration—In an EIFS-clad
building, sealant joints typically are required at the following
locations:
Legend
6.1.1 At the floor line of multi-level wood frame construc-
A. Sealant
B. Sealant Backing
tion;
C. Bond Breaker
6.1.2 At an existing building expansion joint;
D. Joint
6.1.3 Where dissimilar substrates are bridged;
E. Textured Finish
F. Reinforcing Mesh Embedded in Base
6.1.4 When an EIFS abuts dissimilar building construction;
Coat
6.1.5 Some EIFS manufacturers may require joints in long
G. Backwrap Mesh Around Insulation
continuous elevations;
Board
H. Insulation Board
6.1.6 The size and location of joints is the responsibility of
I. Adhesive (If Applicable)
the design professional and shall be consistent with the project
FIG. 2 Sealant Butt Joint Seal (EIFS to Dissimilar Substrates)
conditions and guidelines of the EIFS manufacturer.
6.1.7 Joint Configuration—Industry accepted minimum
joint width is 19 mm ( ⁄4 in.) with sufficient depth to accom-
modate the sealant backing and sealant material. Lesser joint
widths may be allowable where EIFS abuts adjacent materials.
Consider the sealant manufacturer’s published sealant move-
Legend
A. Sealant
B. Sealant Backing
C. Bond Breaker
D. Joint
E. Textured Finish
F. Reinforcing Mesh Embedded in Base
Coat
Legend
G. Backwrap Mesh Around Insulation
A. Sealant
Board
B. Sealant Backing
H. Insulation Board
C. Bond Breaker
I. Adhesive (If Applicable)
D. Joint
FIG. 3 Recessed Sealant Butt Joint Seal (EIFS to EIFS)
E. Textured Finish
F. Reinforcing Mesh Embedded in Base
Coat
G. Backwrap Mesh Around Insulation
ment capability when determining the appropriate joint width.
Board
Refer to Guide C1472. Good architectural practice calls for
H. Insulation Board
I. Adhesive (If Applicable)
jointdesignsthatallowforconstructiontolerancesandmaterial
FIG. 1 Sealant Butt Joint Seal (EIFS to EIFS) variations.
C1481–00 (2006)
Legend
Legend
A. Sealant
A. Sealant
B. Sealant Backing
B. Sealant Backing
C. Bond Breaker
C. Bond Breaker
D. Joint
D. Joint
E. Textured Finish
E. Textured Finish
F. Reinforcing Mesh Embedded in Base
F. Reinforcing Mesh Embedded in Base
Coat
Coat
G. Backwrap Mesh Around Insulation
G. Backwrap Mesh Around Insulation
Board
Board
H. Insulation Board
H. Insulation Board
I. Adhesive (If Applicable)
I. Adhesive (If Applicable)
J. Trim Accessory
FIG. 6 Sealant Bridge Joint Seal Using Liquid—Applied Sealant
and Bond Breaker
FIG. 4 Sealant Butt Joint Seal (Accessory to Accessory)
Legend
A. Sealant Legend
B. Sealant Backing A. Sealant
B. Sealant Backing
C. Bond Breaker
D. Joint C. Bond Breaker
D. Joint
E. Textured Finish
F. Reinforcing Mesh Embedded in Base E. Textured Finish
F. Reinforcing Mesh Embedded in Base
Coat
G. Backwrap Mesh Around Insulation Coat
G. Backwrap Mesh Around Insulation
Board
H. Insulation Board Board
H. Insulation Board
I. Adhesive (If Applicable)
J. Trim Accessory I. Adhesive (If Applicable)
FIG. 7 Sealant Bridge Joint Seal Using Precured Sealant
FIG. 5 Sealant Butt Joint Seal (Accessory to Dissimilar
Substrate)
6.2 EIFS Installation—The EIFS manufacturer’s recom- 6.2.1 Practice C1397 provides a minimum requirement for
mended installation procedures should be followed at all times. the application of Class PB EIFS.
C1481–00 (2006)
Legend
Legend
A. Sealant
A. Sealant
B. Sealant Backing
B. Sealant Backing
C. Bond Breaker
C. Bond Breaker
D. Joint
D. Joint
E. Textured Finish
E. Textured Finish
F. Reinforcing Mesh Embedded in Base
F. Reinforcing Mesh Embedded in Base
Coat
Coat
G. Backwrap Mesh Around Insulation
G. Backwrap Mesh Around Insulation
Board
Board
H. Insulation Board
H. Insulation Board
I. Adhesive (If Applicable)
I. Adhesive (If Applicable)
J. Sealant Bead
J. Sealant Bead
FIG. 10 Sealant Fillet Joint Seal Using Precured Sealant
FIG. 8 Sealant Fillet Joint Seal With Bond Breaker
manufacturer’s nonmetallic reinforcing mesh fully embedded
in their base coat. This procedure is referred to as wrapping.
There shall be no exposed mesh at joint locations or elsewhere.
6.2.3 EIFS manufacturers may require the use of an acces-
sory to terminate a joint (see Figs. 4 and 5). Where an EIFS
manufacturer’s approved accessory is used as a termination
and sealant substrate, wrapping may not be requ
...