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SECTION 07 19 19 - Dow Corning Silicones - Dow Corning

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Depending on size, complexity, and other conditions of the project, certain quality control measures may be appropriate. These include field samples,

DOW CORNING PRODUCT SPECIFICATIONS AUGUST 2005

    Dow Corning Corporation, P.O. Box 994, Midland, MI 48686-0994

    Tel: (800) 248-2481; Fax: (989) 496-8909; Website: www.dowcorning.com/construction

     SECTION 07 19 19

     SILICONE WATER REPELLENT

***** Dow Corning Corporation provides a broad range of high-performance silicone sealants,

    preformed silicone seals, primers, and water-repellent silicone elastomeric coatings for the

    construction industry for both new and renovation projects.

     ? AllGuard Silicone This guide can be used to prepare a specification for Dow CorningElastomeric Coating, a water-based, silicone elastomer waterproofing, for a competitively bid

    construction project. *****

PART 1 - GENERAL

1.1 SUMMARY

***** Edit the following paragraph to indicate scope of the specification section and specific

    project requirements. *****

     A. Section includes fluid applied, water-based, breathable, silicone one-component elastomer

    waterproofing for above-grade application to [cast concrete] [precast concrete] [clay brick

    masonry] [concrete unit masonry] [synthetic stucco] [exterior insulation and finish systems

    (EIFS)] [cement plaster (stucco)] [synthetic stucco] [_____] exterior surfaces.

     B. Related sections:

***** List other specification sections dealing with work directly related to this section such as

    the following. *****

     1. Section 03 30 00 - Cast-in-Place Concrete: Concrete walls to receive waterproofing.

     2. Section 03 40 00 - Precast Concrete: Concrete walls to receive waterproofing.

     3. Section 04 21 00 - Clay Unit Masonry: Brick walls to receive waterproofing.

     4. Section 04 22 00 - Concrete Masonry Units: Concrete block walls to receive

    waterproofing.

     5. Section 07 24 00 - Exterior Insulation and Finish System: Exterior finish system to

    receive waterproofing.

     6. Section 09 24 00 - Portland Cement Plastering: Cement plaster wall finish to receive

    waterproofing.

______________________________________________________________________________

    SILICONE WATER REPELLENT 07 19 19 1

DOW CORNING PRODUCT SPECIFICATIONS AUGUST 2005

    Dow Corning Corporation, P.O. Box 994, Midland, MI 48686-0994

    Tel: (800) 248-2481; Fax: (989) 496-8909; Website: www.dowcorning.com/construction

     7. Section 09 25 10 - Synthetic Stucco Plastering - Synthetic plaster finish to receive

    waterproofing.

1.2 REFERENCES

     A. American Society for Testing and Materials (ASTM):

     1. ASTM D412 - Standard Test Method for Vulcanized Rubber and Thermoplastic

    Rubbers and Thermoplastic Elastomers - Tension.

     2. ASTM D1653 - Standard Test Method for Water Vapor Transmission of Organic

    Coatings.

     3. D1737 - Method of Test for Elongation of Attached Organic Coatings with Cylindrical

    Mandrel Apparatus.

     4. ASTM D2240 - Rubber Property Durometer Hardness.

     5. ASTM D3273 - Standard Test Method for Resistance to Growth of Mold on the

    Surface of Interior Coatings in an Environmental Chamber.

     6. ASTM D3274 - Standard Test Method for Evaluating Degree of Surface

    Disfigurement of Paint Films by Microbial (Fungal or Algal) Growth of Soil and Dirt.

1.3 SUBMITTALS

     A. Provide in accordance with Section 01 33 00 - Submittal Procedures:

     1. Product data for silicone waterproofing, primer, and accessories. Include material

    safety data sheets (MSDSs) and certifications showing compliance with specified

    standards.

     2. Manufacturer’s color chart for selections by Architect.

     3. Manufacturer’s instructions for installation and maintenance.

     4. Copy of warranty specified in Paragraph 1.10 for review by Architect.

    1.4 QUALITY ASSURANCE

     A. Installer qualifications: 3 years successful experience applying waterproofing and

    acceptable to manufacturer for installing their products.

***** Depending on size, complexity, and other conditions of the project, certain quality control

    measures may be appropriate. These include field samples, mock-ups, and pre-installation

______________________________________________________________________________

    SILICONE WATER REPELLENT 07 19 19 2

DOW CORNING PRODUCT SPECIFICATIONS AUGUST 2005

    Dow Corning Corporation, P.O. Box 994, Midland, MI 48686-0994

    Tel: (800) 248-2481; Fax: (989) 496-8909; Website: www.dowcorning.com/construction

conferences. A field sample is part of the actual construction. A mock-up is not part of the

    construction. Based on specific project, include or delete each of the following three articles.

    *****

    1.5 FIELD SAMPLE

***** A field sample is a small portion of the actual construction completed first, tested, and

    evaluated and, if approved, allowed to remain and is used as a standard of quality for the

    reminder of repellent work. Include this article if a field sample is an appropriate quality control

    measure for project. *****

     A. In accordance with Section 01 40 00 - Quality Requirements, apply silicone elastomeric

    coating to [__substrate__] of [__location__] to demonstrate performance and appearance.

     1. Minimum size: [6 by 6 feet] [2 by 2 meters] [_____].

     2. After 7 days, test sample for water penetration.

     3. Accepted sample may remain as part of work and will be used as basis for acceptance

    of remaining sealant work. Unacceptable samples shall be removed.

     B. Do not proceed with application of water repellent until test panel has been successfully

    tested and approved.

    1.6 MOCK-UP

***** A mock-up is a sample constructed separately from the project structure. When tested,

    evaluated, and approved, the mock-up is used as a quality standard for the actual work. When

    the project is completed, the mock-up is removed. Typically, a mock-up is used to evaluate more

    than the sealant joint. For instance, a wall mock-up might be used to evaluate precast concrete

    panels, a window unit, insulation, interior finish system, and the silicone waterproofing. Include

    this article if a mock-up is an appropriate quality control measure for project. *****

     A. In accordance with Section 01 40 00 - Quality Requirements, construct mock-up of

    exterior wall element to illustrate workmanship, performance, and appearance.

     1. Mock-up shall consist of:

     a. [_____] specified in Section [_____].

     b. [_____] specified in Section [_____].

     c. Waterproofing specified in this Section.

     2. Approximate size: [_____].

______________________________________________________________________________

    SILICONE WATER REPELLENT 07 19 19 3

DOW CORNING PRODUCT SPECIFICATIONS AUGUST 2005

    Dow Corning Corporation, P.O. Box 994, Midland, MI 48686-0994

    Tel: (800) 248-2481; Fax: (989) 496-8909; Website: www.dowcorning.com/construction

     3. After 7 days, test sample for water penetration.

     4. Retain accepted mock-up during construction as quality standard. Completely remove

    at Project completion.

    1.7 PRE-INSTALLATION CONFERENCE

***** Include this article if a pre-installation conference is an appropriate quality control

    measure for project. *****

     A. In accordance with Section 01 31 00 - Project Management and Coordination, convene a

    pre-installation conference at the site prior to applying water repellent.

     B. Require attendance of entities directly concerned with exterior wall substrate and

    waterproofing.

     C. Review:

     1. Schedule for applying waterproofing.

     2. Environmental regulations.

     3. Substrate preparation and application of primer.

     4. Protection of surrounding surfaces.

     5. Approved [field sample] [mock-up] to be used as a measure of acceptance.

     6. Weather conditions forecast.

     7. Other items related to successful execution of work.

1.8 PRODUCT HANDLING

     A. Deliver products in manufacturer’s original containers clearly labeled with product

    identification, date of manufacture, and shelf life.

     B. Store materials in clean, cool, dry area at temperatures between [34 and 90 degrees F] [1

    and 32 degrees C].

     C. Do not use water repellent and primer after manufacturer’s stated shelf life.

    1.9 PROJECT CONDITIONS

______________________________________________________________________________

    SILICONE WATER REPELLENT 07 19 19 4

DOW CORNING PRODUCT SPECIFICATIONS AUGUST 2005

    Dow Corning Corporation, P.O. Box 994, Midland, MI 48686-0994

    Tel: (800) 248-2481; Fax: (989) 496-8909; Website: www.dowcorning.com/construction

     A. Do not install water repellent during inclement weather, strong winds, or when such

    conditions are expected. Allow wet surfaces to dry.

     B. Do not apply when temperature is expected to fall below [40 degrees F] [5 degrees C] or

    humidity is expected to exceed 90 percent within next 24 hours.

1.10 WARRANTY

***** Warranty is not available for single-family residences. *****

     A. For applications other than single-family residences, provide under provisions of Section

    01 78 00 - Closeout Submittals:

     1. Manufacturer’s 10-year material warranty to cover water penetration for properly

    applied water repellent.

PART 2 - PRODUCTS

    2.1 ACCEPTABLE MANUFACTURERS

     A. Dow Corning Corporation, P.O. Box 994, Midland, MI 48686-0994; (800) 248-2481;

    www.dowcorning.com/construction.

     B. Requests to use equivalent products of other manufacturers shall be submitted in

    accordance with Section 01 63 00 - Product Substitution Procedures.

2.2 SILICONE ELASTOMERIC COATING

     A. Type: One-component, liquid, water-based, breathable, colored, silicone one-component

    elastomer waterproofing for above-grade to exterior concrete, clay and concrete masonry,

    cement and synthetic stucco, and exterior insulation and finish systems (EIFS) exterior ? AllGuard Silicone Elastomeric Coating, as walls and surfaces; Dow Corning

    manufactured by Dow Corning Corporation.

     B. Composition: Pigmented, water-based, silicone elastomer.

     C. Shelf life: 12 months.

     ? ***** Dow CorningAllGuard Silicone Elastomeric Coating is available in 55 standard colors as

    well as custom colors. *****

     D. Color: [[_____] No. [_____], as manufactured by Dow Corning Corporation.] [Custom

    color as designated by Architect.]

     E. Solids content: 58.6 percent by weight, tested in Accordance with ASTM D2369.

______________________________________________________________________________

    SILICONE WATER REPELLENT 07 19 19 5

DOW CORNING PRODUCT SPECIFICATIONS AUGUST 2005

    Dow Corning Corporation, P.O. Box 994, Midland, MI 48686-0994

    Tel: (800) 248-2481; Fax: (989) 496-8909; Website: www.dowcorning.com/construction

     F. Viscosity: [60,000 cps] [60 Pa-s], tested in accordance with D2196.

     G. High-temperature stability with no change in viscosity: 28 days minimum, tested in

    accordance D1849.

     H. Volatile organic compound (VOC) content: 55 grams/liter.

     I. Cured properties after:

     1. Hardness: 38-durometer hardness, Shore A, tested in accordance with ASTM D2240.

     2. Tensile strength: [145 psi] [1.0 MPa], tested in accordance with ASTM D412.

     3. Elongation: 600 percent, tested in accordance with ASTM D412.

     4. Permeance: 43.2 perms, tested in accordance with ASTM D1653.

     5. Room temperature flexibility: Passes 1/8-inch mandrel test, in accordance with ASTM

    D1737.

     6. Low temperature flexibility: Passes ?-inch mandrel test, in accordance with ASTM

    D1737.

     7. Fungus resistance: Passes testing, in accordance with ASTM D3274.

     8. Mold resistance: Passes testing, in accordance with ASTM D3273.

2.3 PRIMER FOR WATER REPELLENT

     A. Substrate primer: Water-based silicone primer designed to promote adhesion of silicone ? AllGuard Primer, as manufactured by Dow Corning elastomeric coating; Dow Corning

    Corporation.

     1. Solids by weight: 20 percent.

     2. Color: Milky white liquid appearance, which is transparent when cured but darkens

    substrate, and if not coated with water repellent, will develop yellow tint and haze.

     3. Volatile organic compound (VOC) content: 30 grams per liter.

     4. Shelf life: 18 months.

    PART 3 - EXECUTION

______________________________________________________________________________

    SILICONE WATER REPELLENT 07 19 19 6

DOW CORNING PRODUCT SPECIFICATIONS AUGUST 2005

    Dow Corning Corporation, P.O. Box 994, Midland, MI 48686-0994

    Tel: (800) 248-2481; Fax: (989) 496-8909; Website: www.dowcorning.com/construction

3.1 GENERAL

     A. Prepare substrates and apply silicone sealant to surfaces indicated on drawings in

    accordance with manufacturer’s instructions.

     B. Handle, store, and apply materials in compliance with applicable Environmental Protection

    Agency (EPA), Occupational Safety and Health Administration (OSHA), volatile organic

    compound (VOC), and other regulations and manufacturer’s material safety data sheets

    (MSDSs).

     C. Do not apply silicone elastomeric coating to:

     1. Below-grade applications.

     2. Metal, wood, plastic, asphaltic materials, and tar-contaminated masonry.

3.2 PREPARATION

     A. Inspect substrates to receive silicone sealant. Ensure surfaces are clean, dry, and free of

    frost, dust, dirt, grease, oil, curing compounds, form release agents, laitance, efflorescence,

    mildew, and other foreign material.

     B. Clean substrates as required to remove contaminates and foreign material by pressure

    cleaning, wire brushing, grinding or other method recommended by manufacturer.

     C. Repair deteriorated or damaged substrates, repair masonry joints, and fill cracks, voids,

    honeycomb, and other defects using materials as recommended by manufacturer. Allow

    patching materials to cure.

     D. Protect adjacent surfaces not designated to receive water repellent. Provide protection for

    pedestrians, vehicles, landscaping, and surrounding areas to prevent contact with

    repellent.materials.

     ? AllGuard Silicone Elastomeric Coating was developed to obtain good ***** Dow Corning

    adhesion without primer. Depending on substrate, primer may be required to promote adhesion.

    Testing should be conducted to determine if primer is required. Field adhesion test is required

    for manufacturer’s water repellent warranty. *****

     E. Field adhesion test: Prior application of repellent, test each application condition to

    determine if primer is required to satisfactorily adhere repellent to substrate.

     F. Primer: Apply primer to substrates determined by field adhesion test.

     1. Use nap roller, nylon bristle brush, or airless sprayer.

______________________________________________________________________________

    SILICONE WATER REPELLENT 07 19 19 7

DOW CORNING PRODUCT SPECIFICATIONS AUGUST 2005

    Dow Corning Corporation, P.O. Box 994, Midland, MI 48686-0994

    Tel: (800) 248-2481; Fax: (989) 496-8909; Website: www.dowcorning.com/construction

     2. Application rate: [300 square feet per gallon] [7.4 square meters per liter].

     3. Allow to dry 30 to 120 minutes so surface is dry to touch.

3.3 APPLICATION

     A. Apply water repellent at approximate rate [of [_____] [square feet per gallon.] [square

    meter per liter.]] [as recommended by repellent manufacturer.] Do not dilute.

     B. Use nap roller, nylon bristle brush, or airless sprayer.

     C. Apply from top to bottom. Work down vertical surface and cover rundown in process.

    Avoid excessive overlapping.

     D. Inspect application. Verify that results compare with approved [field sample.] [mock-up.]

    Ensure substrates are adequately protected from water penetration.

     E. Remove temporary coverings and protection. Clean and repair adjacent surfaces damaged

    by water repellent application.

    END OF SECTION

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    SILICONE WATER REPELLENT 07 19 19 8

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