Attachment D Sealants and Caulkings-07920 .pdf

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DIVISION 7 - THERMAL AND MOISTURE PROTECTION

Section 07920 - Sealants & Caulking

1. GENERAL.

1-01. WORK INCLUDES.

A. Base Bid:

1. Contractor: Provide removal of existing sealant and joint fillers and re-installation of sealant moisture protection, joint fillers and accessories, for horizontal joints of varying sizes, herein specified.

2. a. Joints in monument stairway.

1-02. RELATED WORK.

A. Specified Elsewhere:

1. 01010 - Project Summary.

2. 01120 - Remodeling Project Procedures.

3. 01340 - Shop Drawings, Product Data & Samples.

4. 01600 - Material & Equipment.

5. 01620 - Storage & Protection.

6. 03700 - Concrete Restoration & Cleaning.

7. 04500 - Masonry Restoration & Cleaning.

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1-03. QUALITY ASSURANCE.

1. Qualifications of installers: Installer specializing in the work of this Section with minimum ten (10) years documented experience.

1-04. REFERENCES.

A. Standards: Sealant, Waterproofing and Restoration Institute

(SWRI) (*)

B. Manufacturer's catalogs: The acceptable manufacturer's catalogs, current at date of bidding documents, are incorporated by reference to the same force and effect as if repeated herein at length.

1-05. SUBMITTALS.

A. In accord with 01340: (*)

1. Product Data: (*)

a. Materials description.

b. Submit two copies of Manufacturer's current printed specifications and installation instructions for each product required.

2. Samples: Submit manufacturer’s standard colors. Each compound and filler. (*number, size, color)

1-06. DELIVERY, STORAGE & HANDLING.

A. Deliver all products in manufacturer's original containers, with seals unbroken, labels, product and manufacturer's names intact and legible.

B. Store all products in a manner to prevent damage, in a secure place, out of way of construction operations. Provide protection until ready for use.

C. Handle in accord with manufacturer's recommendations.

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1-07. PROJECT/SITE CONDITIONS.

A. Existing conditions: (*)

B. Environmental conditions: (*)

1. Weather: Do not install products during adverse weather conditions.

2. Temperature: Ensure that surface and ambient temperatures are within the range recommended by the manufacturer.

1-08. SEQUENCING/SCHEDULING

1-09. WARRANTY. (*General) Contractors warranty: Two years accord with

General Conditions.

2. PRODUCTS.

2-01. ACCEPTABLE MANUFACTURERS.

A. Use only the specified products of the following manufacturers:

CODE MANUFACTURER

1. DAP DAP, Inc./Schering Plough Corp., Tipp City, OH

2. DOW DOW Chemical Co., Midland, MI

3. MAM Mameco International, Cleveland, OH

4. MEAD W.R. Meadows, Inc., Elgin, IL

5. PECO Pecora Chemical Corp., Harleysville, PA

6. PETE Harry S. Peterson Co., Inc., Pontiac, MI

7. PTI Protective Treatments, Inc., Dayton, OH

8. SIKA Sika Chemical Corp., Lyndhurst, NJ

9. SON Contech, Inc., Sonneborn Building Products

Div., Minneapolis, MN

10. TREM Tremco Manufacturing Co., Cleveland, OH

11. WIL Williams Products, Inc., Troy, MI

12. WDT Woodmont Products, Inc., Huntingdon Valley, PA

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2-02. SEALANTS (Exterior & Interior)

A. Generic description and use:

1. S-1: One component urethane, non-sag, non-staining, gun grade elastomeric sealant. Use in all joints one-inch wide or less wherever movement may occur on interior or exterior, at contraction and expansion joints, masonry to masonry, concrete building construction joints, metal door and window frames to masonry, metal to metal and sheet metal to masonry.

2. S-2: Two component urethane, non-sag, non-staining, gun grade elastomeric sealant. Use in all joints wherever movement may occur in locations indicated for S-1 sealant.

3. S-3: One component urethane, pour grade, self-leveling elastomeric sealant. Use in exterior and interior contraction and expansion joints in sidewalks, pavements, decks and swimming pools.

B. Acceptable Products:

MFG/TYPE S-1 S-2 S-3

1. MAM Vulkem 116 Vulkem 227 Vulkem 45

2. MEAD Dualthane

3. PECO Dynatrol I Dynatrol II Urexpan NR 201

4. PETE Isoflex 881 (horiz.)

Isoflex 2000 (vert.)

5. SIKA Sikaflex 1A Sikaflex 12SL

6. SON Sonalastic NPI Sonalastic NPII Sonalastic SL1

7. TREM Dymonic Dymeric 8.GE Silpruf

9.DOW

10.ARDEX

2-04. JOINT FILLERS. (*)

A. Generic description & use:

1. JF-1: Backer rod for elastomeric sealants. Extruded closed-cell polyethylene foam or polyethylene jacketed polyurethane foam, non-bleeding, non-staining, oversized 30 to 50 percent.

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2. JF-2: Preformed Fiber Joint Filler, asphalt-impregnated.

B. Acceptable Products:

MFG/TYPE JF-1 JF-2

1. DOW Ethafoam

2. MEAD Backer Rod Fiber Expansion

Joint Filler

3. SON Sonofoam Backer Sonoflex Cork

Rod Expansion Joint

4. WIL Expand-O-Foam Cord

2-05. JOINT CLEANER.

Type recommended by the manufacturer of the sealing or caulking compound for the specific joint surface and condition.

2-06. BOND BREAKER.

Polyethylene tape: pressure sensitive recommended by sealant manufacturer to suit application.

2-07. COLOR.

For all exposed materials provide natural gray color as selected by Architect from manufacturer’s standard colors.

3. EXECUTION.

3-01. REMOVE EXISTING CONSTRUCTION (*)

Completely remove all existing sealants, caulking, joint fillers and other accessory items. No mechanical means shall be used for removal of material within joints, unless approved by the Project Manager.

3-02. INSPECTION.

A. Thoroughly inspect all existing construction and the conditions under which the work will be performed. Report to the Project

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Manager in writing all conditions that would adversely affect installation of the work.

B. Verify that all joint dimensions are in accord with manufacturer's recommendations.

C. Start of work constitutes acceptance of construction and conditions.

3-03. PREPARATION.

A. Clean, prepare and size joints in accord with manufacturer's instructions. Remove all loose materials and other foreign matter which might impair adhesion of sealant or caulking.

2. Prime surfaces as required, protecting adjacent exposed surfaces.

3-04. INSTALLATION.

A. Install in conformance with referenced standards, manufacturer’s written directions, as shown, and as specified.

B. Install sealant backer rod for liquid elastomeric sealants. Install using blunt or rounded tools to ensure uniform depth without puncturing material. Use oversize backer rod; minimum of 33% for closed cell type; minimum of 50% for open cell type, unless otherwise required by the manufacturer.

C. Install bond breaker tape wherever recommended by manufacturer to ensure that elastomeric sealants will perform properly.

D. Install sealants and caulking in uniform, continuous ribbons, without gaps or air pockets. Ensure complete "wetting" of the joints. Bond surfaces equally on opposite sides. Fill sealant rabbet to a slightly concave surface, slightly below adjoining surfaces.

E. Install sealants to depths shown; when not shown, within the following limitations:

1. For sidewalks, pavements and similar joints sealed with elastomeric sealants and subject to traffic and other abrasion and indentation exposures, fill joints to a depth equal to 75% of joint width, but not more than 3/4" deep or less than 3/8" deep.

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2. For normal moving joints sealed with elastomeric sealants but not subject to traffic, fill joints to a depth equal to 50% of joint width, but not more than 1/2" deep or less than 1/4" deep.

3. For joints sealed with non-elastomeric sealants and caulking compounds, fill joints to a depth in the range of 75% to 125% of joint width.

F. Spillage:

Do not allow sealants or compounds to overflow or spill onto adjoining surfaces.

1. Use masking tape or other precautionary devices to prevent staining of adjoining surfaces.

3-05. CURING.

A. Cure sealants and caulking compounds in compliance with manufacturer's instructions to obtain high early bond strength, internal cohesive strength and surface durability.

3-06. ADJUST/CLEAN.

A. Upon completion, carefully examine all sealant and caulking work.

Remove all damaged and defective work and replace with new materials.

B. Clean up. Remove all surplus products, containers and rubbish and dispose of off site.

C. Remove all spilled or spattered materials from all surfaces. When adjacent surfaces or other work has been damaged or stained as a result of sealing and caulking work, repair all damage and remove all stains to the satisfaction of the Architect/Engineer.

3-07. PROTECTION.

Protect installed work during remainder of construction period. Ensure that it will be without damage or deterioration (other than normal wear or weathering) at substantial completion.

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3-08. SCHEDULES. (*)

A. Sealants: (*)

B. Caulking: (*)

END 07920.

ASTM Standards4

• C 1518, Specification for Precured

Elas- tomeric Silicone Joint Sealants

• C 1299, Guide for Use in Selection of

Liquid- Applied Sealants

• C 1248, Standard Test Method for Staining of Porous Substrate by Joint Sealants

• C 1193, Guide for Use of Joint Sealants

• C 920, Specification for Elastomeric

Joint Sealants

• C 794, Test Method for Adhesion-in-Peel of Elastomeric Joint Sealants

• C 717, Terminology of Building Seals and Sealants

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