DIV 7 Master.pdf

FEDERAL AVIATION ADMINISTRATION January, 2014

FAA-TYS-1003480

SECTION 07 19 00 – WATER REPELLENTS

PART 1 - GENERAL

1.1 SUMMARY

A. Section Includes:

1. Exterior water repellent coatings for:

a. Concrete Unit Masonry.

2. Preparatory repointing, quantity not to exceed 100 S.F.

1.2 SUBMITTALS

A. Product Data: Manufacturer’s specifications and technical data including the following:

1. Detailed specification of construction and fabrication.

2. Manufacturer’s installation instructions.

3. Certified test reports indicating compliance with performance requirements specified herein.

B. Quality Control Submittals:

1. Statement of qualifications.

2. Statement of compliance with Regulatory Requirements.

3. Field Quality Control Submittals as specified in Part 3.

4. Manufacturer’s field reports.

1.3 QUALITY ASSURANCE

A. Manufacturer’s Qualification: Not less than 5 years experience in the actual production of specified products.

B. Installer’s Qualifications: Firm experienced in installation or application of systems similar in complexity to those required for this Project, plus the following:

1. Acceptable to or licensed by manufacturer.

2. Not less than 3 years experience with systems.

3. Successfully completed not less than 5 comparable scale projects using this system.

C. Product Qualifications:

1. Comply with the provisions of the following standards for concrete masonry.

a. No change in surface texture, no blotchy appearance

b. ASTM E514 “Water Permeance of Masonry”

- 100% reduction in leakage rate over the control wall

- Control wall must have a leakage rate of at least 6.0 liters/hours

c. ASTM C140 “Concrete Masonry Units” 24 hour water soak

- 99.6% reduction in water absorption

- Control should absorb at least 5% water

d. Penetration - 0.25 inches average

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SECTION 07 92 00 - JOINT SEALANTS

GENERAL

DESCRIPTION

This section covers exterior weatherproofing silicone sealant material and application.

The manufacturers’ application instructions for each product used are considered part of this specification and should be followed at all times.

This Section includes joint sealants for the following locations:

Exterior joints in vertical surfaces.

Joints on all flashing and parapet caps.

Perimeter joints between exterior concrete surfaces and frames of exterior doors.

Perimeter joints between existing exterior metal siding, and louver and window unit systems.

Perimeter joints between two adjacent exterior concrete surfaces.

Other joints as indicated.

1.2 SYSTEM PERFORMANCE REQUIREMENTS

Provide elastomeric joint sealants that have been produced and installed to establish and to maintain watertight and airtight continuous seals without causing staining or deterioration of joint substrates.

Provide joint sealants for interior applications that have been produced and installed to establish and maintain airtight continuous seals that are water resistant and cause no staining or deterioration of joint substrates.

Provide products that will not produce off-gassing of VOC’s after product is installed and properly cured.

1.3 SUBMITTALS

A. Product data from manufacturers for each joint sealant product required.

Certification by joint sealant manufacturer that sealants plus the primers and cleaners required for sealant installation comply with local regulations controlling use of volatile organic compounds.

Provide Material Safety Data Sheets (MSDS) for the following:

Elastomeric joint sealants Primer.

Cleaners for nonporous surfaces.

Samples for initial selection purposes in form of manufacturer's standard bead samples, consisting of strips of actual products showing full range of colors available, for each product exposed to view.

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Certificates from manufacturers of joint sealants attesting that their products comply with specification requirements and are suitable for the use indicated.

Qualification data complying with requirements specified in "Quality Assurance" article. Include list of completed projects with project names addresses, names of architects and owners, plus other information specified.

Compatibility and adhesion test reports from elastomeric sealant manufacturer indicating that materials forming joint substrates and joint sealant backings have been tested for compatibility and adhesion with joint sealants. Include sealant manufacturer's interpretation of test results relative to sealant performance and recommendations for primers and substrate preparation needed to obtain adhesion.

Compatibility test reports from elastomeric sealant manufacturer indicating that materials forming joint sealants have been tested for compatibility with Silicone Coating.

Product test reports for each type of joint sealants indicated, evidencing compliance with requirements specified.

Preconstruction field test reports, indicating which products and joint preparation methods demonstrate acceptable adhesion to joint substrates.

Refer to Section 01 78 23, “Operation and Maintenance Manual Data.”

1.4 QUALITY ASSURANCE

A. Installer Qualifications: Engage an experienced Installer who has completed joint sealant applications similar in material, design, and extent to that indicated for Project that have resulted in construction with a record of successful in-service performance.

Single Source Responsibility for Joint Sealant Materials: Obtain joint sealants and joint backer materials from a single manufacturer for each different product required.

Conduct Testing: Provide comprehensive test data for each type of joint sealant based on tests conducted by a qualified independent testing laboratory on current product formulations within a 24-month period preceding date of Contractor's submittal of test results to COTR.

Test elastomeric sealants for compliance with requirements specified by reference to ASTM C920.

Include test results for hardness, stain resistance, adhesion and cohesion under cyclic movement (per ASTM C719), low-temperature flexibility, modulus of elasticity at 100 percent strain, effects of heat aging, and effects of accelerated weathering.

Include test results performed on joint sealants after they have cured for 1 year.

1.5 DELIVERY, STORAGE, AND HANDLING

A. Deliver materials to Project site in original unopened containers or bundles with labels indicating manufacturer, product name and designation, color, expiration period for use, pot life, curing time, and mixing instructions for multi-component materials.

Store and handle materials in compliance with manufacturer's recommendations to prevent their deterioration or damage due to moisture, high or low temperatures, contaminants, or other causes.

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1.6 PROJECT CONDITIONS

A. Environmental Conditions: Do not proceed with installation of joint sealants under the following conditions:

When ambient and substrate temperature conditions are outside the limits permitted by joint sealant manufacturer or below 40 deg F.

When joint substrates are wet.

Joint Width Conditions: Do not proceed with installation of joint sealants where joint widths are less than allowed by joint sealant manufacturer for application indicated.

Joint Substrate Conditions: Do not proceed with installation of joint sealants until contaminants capable of interfering with their adhesion are removed from joint substrates.

1.7 SEQUENCING AND SCHEDULING

B. Sequence installation of joint sealants to occur not less than 21 nor more than 30 calendar days after completion of waterproofing, unless otherwise indicated.

PART 2 - PRODUCTS

2.1 ELASTOMERIC JOINT SEALANTS

A. Silicone Sealant shall be GE SilPruf SCS2000 or meeting the following characteristics:

1. Description: One-component, medium-modulus, high strength, neutral-cure, 100% sili-cone polymer sealant.

2. Compliance:

a. ASTM C 920, Type S, Grade NS, Class 25.

b. Federal Specification TT-S-001543B.

c. Federal Specification TT-S-00230C.

3. Properties: After 21 days @ 70° F and 50% relative humidity.

a. Dynamic Movement Capability, ASTM C 719: +/-50%.

4. Application: Field applied as indicated on the drawings.

5. Compatible with GE SilShield SEC2400 coating.

6. Compatible with GE SS4044P sealant primer.

B. Compatibility: Provide joint sealants, joint fillers, and other related materials that are compatible with one another and with joint substrates under conditions of service and application, as demonstrated by sealant manufacturer based on testing and field experience.

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C. Colors: Provide custom colors for each individual application to match existing surfaces subject to approval of COR.

D. Provide VOC-compliant sealants. Products must not produce off-gassing after proper curing is achieved.

2.3 JOINT SEALANT BACKING

A. General: Provide sealant backings of material and type that are non-staining; are compatible with joint substrates, sealants, primers and other joint fillers; and are approved for applications indicated by sealant manufacturer based on field experience and laboratory testing. Provide backing and filler material by sealant manufacturer to greatest extent possible, or products recommended by sealant manufacturer.

Plastic Foam Joint Fillers: Preformed, compressible, resilient, non-staining, non-waxing, non-extruding strips of flexible plastic foam of material indicated below and of size, shape, and density to control sealant depth and otherwise contribute to producing optimum sealant performance:

Open-cell polyurethane foam.

Closed-cell polyethylene foam, nonabsorbent to liquid water and gas, non-outgassing in unruptured state.

Bond-Breaker Tape: Polyethylene tape or other plastic tape as recommended by sealant manufacturer for preventing sealant from adhering to rigid, inflexible joint filler materials or joint surfaces at back of joint where such adhesion would result in sealant failure. Provide self-adhesive tape where applicable.

2.4 MISCELLANEOUS MATERIALS

A. Primer: Material recommended by joint sealant manufacturer where required for adhesion of sealant to joint substrates indicated, as determined from preconstruction joint sealant-substrate tests and field tests.

Cleaners for Nonporous Surfaces: Chemical cleaners acceptable to manufacturers of sealants and sealant backing materials, free of oily residues or other substances capable of staining or harming in any way joint substrates and adjacent nonporous surfaces, and formulated to promote optimum adhesion of sealants with joint substrates.

Masking Tape: Non-staining, nonabsorbent material compatible with joint sealants and surfaces adjacent to joints.

PART 3 - EXECUTION

3.1 EXAMINATION

A. Examine joints indicated to receive joint sealants, with Installer present, for compliance with requirements for joint configuration, installation tolerances, and other conditions affecting joint sealant performance. Do not proceed with installation of joint sealants until unsatisfactory conditions have been corrected.

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3.2 PREPARATION

A. Surface Cleaning of Joints: Clean out joints immediately before installing joint sealants to comply with recommendations of joint sealant manufacturer and the following requirements:

Remove all foreign material from joint substrates that could interfere with adhesion of joint sealant, including dust, paints (except for permanent, protective coatings tested and approved for sealant adhesion and compatibility by sealant manufacturer), old joint sealants, oil, grease, waterproofing, water repellents, water, surface dirt, and frost.

Clean concrete, masonry, unglazed surfaces of ceramic tile, and similar porous joint substrate surfaces by brushing, grinding, blast cleaning, mechanical abrading, or a combination of these methods to produce a clean, sound substrate capable of developing optimum bond with joint sealants. Remove loose particles remaining from above cleaning operations by vacuuming or blowing out joints with oil-free compressed air.

Clean metal, glass and other nonporous surfaces with chemical cleaners or other means that do not stain, harm substrates, or leave residues capable of interfering with adhesion of joint sealants.

Joint Priming: Prime joint substrates where indicated or where recommended by joint sealant manufacturer based on preconstruction joint sealant-substrate tests or prior experience. Apply primer to comply with joint sealant manufacturer's recommendations. Confine primers to areas of joint sealant bond; do not allow spillage or migration onto adjoining surfaces.

Masking Tape: Use masking tape where required to prevent contact of sealant with adjoining surfaces that otherwise would be permanently stained or damaged by such contact or by cleaning methods required to remove sealant smears. Remove tape immediately after tooling without disturbing joint seal.

3.3 INSTALLATION OF JOINT SEALANTS

A. General: Comply with joint sealant manufacturer's printed installation instructions applicable to products and applications indicated, except where more stringent requirements apply.

Sealant Installation Standard: Comply with recommendations of ASTM C 1193 for use of joint sealants as applicable to materials, applications, and conditions indicated.

Installation of Sealant Backings: Install sealant backings to comply with the following requirements:

Install joint fillers of type indicated to provide support of sealants during application and at position required to produce the cross-sectional shapes and depths of installed sealants relative to joint widths that allow optimum sealant movement capability.

Do not leave gaps between ends of joint fillers.

Do not stretch, twist, puncture, or tear joint fillers.

Remove absorbent joint fillers that have become wet prior to sealant application and replace with dry material.

Install bond breaker tape between sealants where backer rods are not used between sealants and joint fillers or back of joints.

Installation of Sealants: Install sealants by proven techniques that result in sealants directly contacting and fully wetting joint substrates, completely filling recesses provided for each joint configuration, and

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providing uniform, cross-sectional shapes and depths relative to joint widths that allow optimum sealant movement capability. Install sealants at the same time sealant backings are installed.

Tooling of Non-sag Sealants: Immediately after sealant application and prior to time skinning or curing begins, tool sealants to form smooth, uniform beads of configuration indicated, to eliminate air pockets, and to ensure contact and adhesion of sealant with sides of joint. Remove excess sealants from surfaces adjacent to joint. Do not use tooling agents that discolor sealants or adjacent surfaces or are not approved by sealant manufacturer.

Provide concave joint configuration per Figure 5A in ASTM C1193, unless otherwise indicated.

Use masking tape to protect adjacent surfaces of recessed tooled joints.

3.4 CLEANING

A. Clean off excess sealants or sealant smears adjacent to joints as work progresses by methods and with cleaning materials approved by manufacturers of joint sealants and of products in which joints occur.

3.5 PROTECTION

A. Protect joint sealants during and after curing period from contact with contaminating substances or from damage resulting from construction operations or other causes so that they are without deterioration or damage at time of Substantial Completion. If, despite such protection, damage or deterioration occurs, cut out and remove damaged or deteriorated joint sealants immediately so that and installations with repaired areas are indistinguishable from original work.

END OF SECTION 07 92 00

JOINT SEALANTS 07 92 00 - 6

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D. Regulatory Requirements: Products shall comply with State and local regulations concerning AIM (Architectural, Industrial and Maintenance) coatings regarding Volatile Organic Content

(VOC).

1. The use of 1,1,1 trichloroethane shall not be allowed.

1.4 DELIVERY STORAGE AND HANDLING

A. Packing and Shipping: Deliver products in original unopened packaging with legible manufacturer’s identification.

B. Storage and Protection:Comply with manufacturer’s recommendations.

1.5 PROJECT CONDITIONS

A. Environmental Requirements:

1. Maintain ambient temperature above 20 degrees F during and 24 hours after installation.

2. Do not proceed with application on materials if ice or frost is covering the substrate.

3. Do not proceed with application if ambient temperature of surface exceeds 100 degree F.

4. Do not proceed with the application of materials in rainy conditions or if heavy rain is anticipated with 4 hours after application.

B. Sealer Coordination:

1. Verify compatibility with curing compounds, patching materials, repair mortar, paints, sealants, etc. to be used on masonry surfaces to ensure compatibility with the water repellent.

1.6 WARRANTY

A. Manufacturer shall stand behind installed system for period of 20 years from Date of Completion against all the conditions indicated below. When notified in writing from Owner, Manufacturer shall, promptly and without inconvenience and cost to Owner correct said deficiencies.

1. Loss of water repellency:

a. Concrete Masonry: 20 minutes or greater (60 mph wind driven rain equivalent).

1.7 TOXIC MATERIALS

A. To protect personnel from overexposure to toxic materials, conform to the most stringent guidance of:

1. The coating manufacturer when using solvents or other chemicals. Use impermeable gloves, chemical goggles or face shield, and other recommended protective clothing and equipment to avoid exposure of skin, eyes, and respiratory system. Conduct work in a manner to minimize exposure of building occupants and the general public.

2. 29 CFR 1910.1000.

3. Threshold Limit Values (R) of the American Conference of Governmental Industrial

Hygienists.

4. Manufacturer's material safety data sheets.

1.8 REGULATORY REQUIREMENTS

A. Provide coating materials that conform to the restrictions of the Local Air Pollution Control jurisdiction and local Air Pollution Control District regional jurisdiction. Notify the Contracting

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Officer of any water repellent coating specified herein which fails to conform to the local Air Quality Management District Rules at the location of the Project. In localities where the specified coating is prohibited, the Contracting Officer may direct the substitution of an acceptable coating.

PART 2 - PRODUCTS

2.1 MATERIALS

A. Water repellent solution shall be a clear or of a color indicated by the facility representative, non-yellowing, deep-penetrating, VOC compliant solution. Material shall not stain or discolor and shall produce a mechanical and chemical interlocking bond with the substrate to the depth of the penetration.

B. Silane, 100 Percent Solids Penetrating water repellent. A monomeric compound containing 100 percent alkyltrialkoxysilanes.

1. Composition: Pure Silane.

2. Active alkylalkoxysilane content: ASTM D 2369 100 percent by weight.

3. Appearance: Clear liquid.

4. Average depth of penetration: Up to 3/8 inch depending on substrate.

5. VOC content: Less than 375 grams per liter.

6. Flash point, 122 degrees F, ASTM D 3278.

7. Density: 7.3 to 8.1 pounds per gallon.

C. Acceptable manufacturers and products for Concrete Masonry, minimum 100% solids:

1. Protectosil® CHEM-TRETE® PB 100 – Degussa A&S Division 1-800-828-0919.

2. GE SilShield SEC 2400 – Momentive Performance Materials 1-887-943-7325

PART 3 - EXECUTION

3.1 EXAMINATION

A. Verification of Conditions: Examine areas and conditions under which Work is to be performed and identify conditions that may be detrimental to proper or timely completion.

1. Do not proceed until unsatisfactory conditions have been corrected.

3.2 PREPARATION

A. Protection: Install coverings to protect adjacent surfaces. Protect landscape materials with breathing type drop cloths: plastic covers are not acceptable.

B. Surface Preparation:

1. Masonry joints found to be unsound, hollow, or otherwise defective, must be raked out to a depth of 1/2 inch and pointed with mortar.

2. Cracks that exceed 1/64 inch wide must be filled with pointing mortar.

3. All repointing must be completed and allowed to cure.

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4. Remove dirt, dust and materials that will interfere with the proper and effective application of the penetrating sealer. It is the responsibility of the Contractor to prepare the surfaces of the concrete as recommended by the Water Repellent Manufacturer and acceptable to the Engineer.

5. Contractor shall powerwash all surfaces prior to sealing with water repellent materials.

6. Sealants, patching materials, and expansion joints shall have been installed and approved by the Engineer.

3.3 FIELD QUALITY CONTROL

A. Spray Test: After water repellent has dried, spray coated surfaces with water.

1. After surfaces have adequately dried, recoat surfaces that show water absorption.

B. Manufacturer’s Field Services:

1. Furnish written certification that surface preparation method and final condition has manufacturer’s approval and comply with the warranty.

3.4 APPLICATION

A. Product shall be applied as supplied by the manufacturer without dilution or alteration.

C. Apply with a low-pressure (15 psi) airless spray equipment with a fan spray coarse nozzle, flooding the surface to obtain uniform coverage unless otherwise recommended by the manufacturer.

D. Apply at a rate of not less than 60 square foot/gallon unless the field tests (as outlined in 3.3) determine that a heavier rate of application is necessary to meet the performance requirements.

E. Apply at temperature and weather conditions recommended by the manufacturer or written in this specification.

F. Follow manufacturers’ recommendations concerning protection of glass, metal and other non-porous substrates. Contractor will be responsible to clean all surfaces that are contaminated by the water repellent.

G. Follow manufacturer’s recommendation concerning protection of plants, grass and other vegetation. Contractor will be responsible for replacing all plants, grass or vegetation damaged by the water repellent.

H. Apply water repellent by brush only at locations where overspray would affect adjacent materials and where not practicable for spray application.

3.5 CLEANING

A. While Work Progresses: Clean spillage and overspray from adjacent surfaces using materials and methods as recommended by water repellent manufacturer.

B. Remove protective coverings from adjacent surfaces when no longer needed.

3.6 COMPLETION

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A. Work that does not conform to specified requirements shall be corrected and/or replaced as directed by the Owners Representative at contractor’s expense without extension of time.

B. Execute all necessary action to process the manufacturer’s warranty, including but not limited to, scheduling a field quality test, obtaining and filling out documentation, postage, etc.

END OF SECTION

WATER REPELLENTS 07 19 00 - 5

Install bond breaker tape between sealants where backer rods are not used between sealants and joint fillers or back of joints.