Attachment_1_Specifications.pdf

SECTION TABLE OF CONTENTS

DIVISION 07 - THERMAL AND MOISTURE PROTECTION

SECTION 07 24 00

EXTERIOR INSULATION AND FINISH SYSTEMS

22 March 2017

PART 1 GENERAL

1.1 REFERENCES

1.2 SYSTEM DESCRIPTION AND REQUIREMENTS

1.2.1 System Requirements and Tests

1.2.1.1 Water Penetration

1.2.1.2 Wind Load

1.2.1.3 Full scale or intermediate scale fire test

1.2.1.4 Mock-Up Installation of EIFS

1.2.2 Component Requirements and Tests

1.2.2.1 Surface Burning Characteristics

1.2.2.2 Radiant Heat

1.2.2.3 Impact Resistance

1.2.3 Sub-Component Requirements and Tests

1.2.3.1 Abrasion Resistance

1.2.3.2 Accelerated Weathering

1.2.3.3 Mildew Resistance

1.2.3.4 Salt Spray Resistance

1.2.3.5 Water Resistance

1.2.3.6 Absorption-Freeze/Thaw

1.2.3.7 Sample Boards

1.2.4 Moisture Analysis

1.3 SUBMITTALS

1.4 QUALITY ASSURANCE

1.4.1 Qualifications of EIFS Manufacturer

1.4.2 Qualification of EIFS Installer

1.4.3 Qualification of Sealant Applicator

1.4.4 Qualifications of Third Party Inspector

1.4.5 Insulation Board-

1.4.6 Pre-Installation Conference

1.5 DELIVERY AND STORAGE

1.6 ENVIRONMENTAL CONDITIONS

1.7 WARRANTY

PART 2 PRODUCTS

Attachment 1

FA301017R0006

2.1 PRODUCT SUSTAINABILITY CRITERIA

2.1.1 Recycled Content for Insulation Materials

2.1.2 Recycled Content for Metal System Accessories

2.2 COMPATIBILITY

2.3 SHEATHING BOARD

2.3.1 Fiber Reinforced Cement Sheathing Board

2.3.2 Glass Mat Gypsum Sheathing Board

2.4 ADHESIVE

2.5 LATHING AND FURRING

2.6 MECHANICAL FASTENERS

2.7 THERMAL INSULATION

2.7.1 Manufacturer's Recommendations

2.7.2 Insulation Board

2.8 BASE COAT

2.9 PORTLAND CEMENT

2.10 REINFORCING FABRIC

2.11 FINISH COAT

2.12 SEALANT PRIMER

2.13 ACCESSORIES

2.14 JOINT SEALANT

2.15 BOND BREAKER

2.16 BACKER ROD

PART 3 EXECUTION

3.1 EXAMINATION

3.2 SURFACE PREPARATION

3.3 INSTALLATION

3.3.1 Sheathing Board

3.3.2 Insulation Board

3.3.2.1 Mechanically Fastened Insulation Boards

3.3.2.2 Adhesively Fastened Insulation Boards

3.3.3 Base Coat and Reinforcing Fabric Mesh,

3.3.3.1 Class PB Systems

3.3.3.2 Class PM Systems

3.3.4 Finish Coat

3.4 JOINT SEALING

3.4.1 Surface Preparation, Backer Rod, and Primer

3.4.2 Sealant

3.5 FIELD QUALITY CONTROL

3.5.1 Third Party Inspection

3.5.2 Inspection Check List

3.6 CLEANUP

-- End of Section Table of Contents --

SECTION 07 24 00

EXTERIOR INSULATION AND FINISH SYSTEMS

05/11

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

ASTM INTERNATIONAL (ASTM)

ASTM B117 (2016) Standard Practice for Operating Salt Spray (Fog) Apparatus

ASTM C1177/C1177M (2013) Standard Specification for Glass Mat Gypsum Substrate for Use as Sheathing

ASTM C1186 (2008; R 2012) Standard Specification for Flat Non-Asbestos Fiber Cement Sheets

ASTM C1278/C1278M (2007a; R 2015) Standard Specification for Fiber-Reinforced Gypsum Panel

ASTM C1325 (2014) Standard Specification for Non-Asbestos Fiber-Mat Reinforced Cement Substrate Sheets

ASTM C150/C150M (2016; E 2016) Standard Specification for Portland Cement

ASTM C473 (2016) Standard Test Methods for Physical Testing of Gypsum Panel Products

ASTM C578 (2016) Standard Specification for Rigid, Cellular Polystyrene Thermal Insulation

ASTM C67 (2016) Standard Test Methods for Sampling and Testing Brick and Structural Clay Tile

ASTM C847 (2014a) Standard Specification for Metal Lath

ASTM C920 (2014a) Standard Specification for Elastomeric Joint Sealants

ASTM D2247 (2015) Testing Water Resistance of Coatings in 100% Relative Humidity

ASTM D3273 (2016) Standard Test Method for Resistance to Growth of Mold on the Surface of Interior Coatings in an Environmental Chamber

ASTM D968 (2015) Abrasion Resistance of Organic Coatings by Falling Abrasive

ASTM E136 (2016) Behavior of Materials in a Vertical Tube Furnace at 750 Degrees C

ASTM E2098/E2098M (2013) Determining Tensile Breaking Strength of Glass Fiber Reinforcing Mesh for Use in Class PB Exterior Insulation and Finish Systems (EIFS) after Exposure to a Sodium Hydroxide Solution

ASTM E2486 (2006) Standard Test Method for Impact Resistance of Class PB and PI Exterior Insulation and Finish Systems (EIFS)

ASTM E2570/E2570M (2007; R 2014; E 2014) Standard Test Methods for Evaluating Water-Resistive Barrier (WRB) Coatings Used under Exterior Insulation and Finish Systems (EIFS) or EIFS with Drainage

ASTM E330/E330M (2014) Structural Performance of Exterior Windows, Doors, Skylights and Curtain Walls by Uniform Static Air Pressure Difference

ASTM E331 (2000; R 2016) Standard Test Method for Water Penetration of Exterior Windows, Skylights, Doors, and Curtain Walls by Uniform Static Air Pressure Difference

ASTM E695 (2003; R 2015; E 2015) Measuring Relative Resistance of Wall, Floor, and Roof Construction to Impact Loading

ASTM E84 (2016) Standard Test Method for Surface

Burning Characteristics of Building Materials

ASTM G153 (2013) Operating Enclosed Carbon Arc Light

Apparatus for Exposure of Nonmetallic Materials

INTERNATIONAL CODE COUNCIL (ICC)

ICC IBC (2015) International Building Code

NATIONAL FIRE PROTECTION ASSOCIATION (NFPA)

NFPA 268 (2012) Standard Test Method for Determining Ignitibility of Exterior Wall Assemblies Using a Radiant Heat Energy Source

NFPA 285 (2012) Standard Fire Test Method for

Evaluation of Fire Propagation Characteristics of Exterior Non-Load-Bearing Wall Assemblies Containing Combustible Components

1.2 SYSTEM DESCRIPTION AND REQUIREMENTS

The exterior insulation and finish system (EIFS) must be a job-fabricated, drainable, exterior wall covering consisting of sheathing, insulation board, reinforcing fabric, base coat, finish coat, adhesive and mechanical fasteners as applicable. The system components must be compatible with each other and with the substrate as recommended or approved by, and the products of, a single manufacturer regularly engaged in furnishing Exterior Insulation and Finish Systems. All materials must be installed by an applicator approved by the system manufacturer. EIFS must be Class PB as and must match the existing finish.

1.2.1 System Requirements and Tests

The system must meet the performance requirements as verified by the tests listed below. Where a wall system of similar type, size, and design as specified for this project has been previously tested under the condition specified herein, the resulting test reports may be submitted in lieu of job specific tests.

1.2.1.1 Water Penetration

Test the system for water penetration by uniform static air pressure in accordance with ASTM E331. There must be no penetration of water beyond the plane of the base coat/EPS board interface after 15 minutes at 300 Pa

6.4 psf, or 20 percent of positive design wind pressure, whichever is greater.

1.2.1.2 Wind Load

Test the system for wind load by uniform static air pressure in accordance with ASTM E330/E330M (procedure A) to a minimum pressure of 80 psf. There must be no permanent deformation, delamination, or other deterioration.

1.2.1.3 Full scale or intermediate scale fire test

Conduct wall fire test using apparatus, specimen, performance criteria, and procedure in accordance with NFPA 285 when required by ICC IBC 2603.5.5.

The following requirements must be met:

a. No vertical spread of flame within core of panel from one story to the next.

b. No flame spread over the exterior surface.

c. No vertical flame spread over the interior surface from one story to the next.

d. No significant lateral spread of flame from compartment of fire origin to adjacent spaces.

1.2.2 Component Requirements and Tests

The components of the system must meet the performance requirements as verified by the tests listed below.

1.2.2.1 Surface Burning Characteristics

Conduct ASTM E84 test on samples consisting of base coat, reinforcing fabric, and finish coat. Cure for 28 days. The flame spread index must be 25 or less and the smoke developed index must be 450 or less.

1.2.2.2 Radiant Heat

The system must be tested in accordance with NFPA 268 on both the minimum and maximum thickness of insulation intended for use with no ignition during the 20-minute period.

1.2.2.3 Impact Resistance

Standard impact resistance:

3 to 6 J 25 to 49 inch-lbs

a. Class PB Systems: Hemispherical Head Test; 28 day cured specimen of

PB EIFS in accordance with ASTM E2486. The test specimen must exhibit no broken reinforcing fabric per ASTM E2486 at an impact of 5.6 J 49 in/lb.

1.2.3 Sub-Component Requirements and Tests

Unless otherwise stated, the test specimen must consist of reinforcing mesh, base coat, and finish coat applied in accordance with manufacturer's printed recommendations to the insulation board to be used on the building. For mildew resistance, only the finish coat is applied onto glass slides for testing. These specimen must be suitably sized for the apparatus used and be allowed to cure for a minimum of 28 days prior to testing.

Abrasion Resistance

Test in accordance with ASTM D968, Method A. Test a minimum of two specimens. After testing, the specimens must show only very slight smoothing, with no loss of film integrity after 500 liters 132 gallons of sand.

1.2.3.1 Accelerated Weathering

Test in accordance with ASTM G153, Cycle 1. After 2000 hours specimens must exhibit no visible cracking, flaking, peeling, blistering, yellowing, fading, or other such deterioration.

1.2.3.2 Mildew Resistance

Test in accordance with ASTM D3273. The specimen shall consist of the finish coat material, applied to clean 75 mm by 100 mm 3 inch by 4 inch glass slides and must be allowed to cure for 28 days. After 28 days of exposure, the specimen must not show any growth.

1.2.3.3 Salt Spray Resistance

Test in accordance with ASTM B117. The specimen must be a minimum of 100 mm by 150 mm 4 inch by 6 inch and must be tested for a minimum of 300 hours. After exposure, the specimen must exhibit no observable deterioration, such as chalking, fading , or rust staining.

1.2.3.4 Water Resistance

Test in accordance with ASTM D2247. The specimen must be a minimum of 100 mm by 150 mm 4 inch by 6 inch. After 14 days, the specimen must exhibit no cracking, checking, crazing, erosion, blistering, peeling, or delamination.

1.2.3.5 Absorption-Freeze/Thaw

Class PB systems must be tested in accordance with ASTM E2570/E2570M for 60 cycles of freezing and thawing. After testing, the specimen must exhibit no cracking, checking, or splitting, and negligible weight gain. Class PM systems must be tested in accordance with ASTM C67 for 50 cycles of freezing and thawing. After testing, the specimens must exhibit no cracking or checking and have negligible weight gain.

1.2.3.6 Sample Boards

Unless otherwise stated, provide sample EIFS Component 300 by 600 mm 12 by 24 inches, on sheathing board, including finish color and texture, typical joints and sealant. If more than one color, finish, or pattern is used, provide one sample for each. The test specimen must consist of reinforcing mesh, base coat, and finish coat applied in accordance with manufacturer's printed recommendations to the insulation board to be used on the building.

1.2.4 Moisture Analysis

Perform a job specific vapor transmission analysis based on project specific climate and specified wall components and materials. Indicate the temperatures and relative humidities for the inside and outside of the building; a complete listing of the building components, their thickness, thermal resistance and permeance, as well as building location and use.

If a mathematical model was used for the analysis, include the name of the model and the supplier/developer.

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are [for Contractor Quality Control approval.][for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government.] Submittals with an "S" are for inclusion in the Sustainability Notebook, in conformance to Section 01 33 29 SUSTAINABILITY REPORTING. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

Shop Drawings;

Show wall layout, construction and expansion joints, decorative grooves, layout of sheathing board, thermal insulation board, and reinforcing mesh and strip reinforcing fabric; joint and flashing details; details at wall penetrations; types and location of fasteners;

SD-03 Product Data

Sheathing Board

Thermal Insulation

Adhesive

Mechanical Fasteners

Accessories

Base Coat

Portland Cement

Reinforcing Fabric

Finish Coat

Joint Sealant

Sealant Primer

Bond Breaker

Backer Rod

Insulation Board

Warranty

Include joint and other details, such as end conditions, corners, windows, and parapet. Include shelf life and recommended cleaning solvents in data for sealants. Include material safety data sheets (SDS)for all components of the EIFS. The SDS shall be available at the job site.

SD-04 Samples

Sample Boards;

Color and Texture

SD-05 Design Data

Wind Load Calculations

Moisture Analysis Calculations

SD-06 Test Reports

Abrasion Resistance

Accelerated Weathering

Impact Resistance

Mildew Resistance

Salt Spray Resistance

Water Vapor Transmission

Absorption-Freeze-Thaw

Wall Fire Test

Water Penetration

Water Resistance

Full Scale or Intermediate Scale Fire Test

Surface Burning Characteristics

Radiant Heat

Substrate

Wind Load

SD-07 Certificates

Qualifications of EIFS Manufacturer

Qualification of EIFS Installer

Qualification of Sealant Applicator

Certify that EIFS installer meets requirements specified under paragraph "Qualification of Installer," and that sealant applicator is approved by the EIFS Manufacturer.

SD-08 Manufacturer's Instructions

Installation

Manufacturer's standard printed instructions for the installation of the EIFS. Include requirements for condition and preparation of substrate, installation of EIFS, and requirements for sealants and sealing.

SD-10 Operation and Maintenance Data

EIFS

Include detailed finish repair procedures and information regarding compatibility of sealants with base and finish coatings.

]1.4 QUALITY ASSURANCE

1.4.1 Qualifications of EIFS Manufacturer

The EIFS must be the product of a manufacturer who has been in the practice of manufacturing and designing EIFS for a period of not less than 3 years, and has been involved in at least five projects similar to this project in size, scope, and complexity, in the same or a similar climate as this project.

1.4.2 Qualification of EIFS Installer

The EIFS Installer must be trained by the EIFS manufacturer to perform the installation of the System and must have successfully installed at least five projects at or near the size and complexity of this project. The contractor must employ qualified workers trained and experienced in installing the manufacturer's EIFS.

1.4.3 Qualification of Sealant Applicator

The sealant applicator must be experienced and competent in the installation of high performance industrial and commercial sealants and must have successfully installed at least five projects at or near the size and complexity of this project.

1.4.4 Qualifications of Third Party Inspector

Submit evidence that third party inspector has current certification from the Exterior Design Institute or equal inspector certification as inspector for the installation of EIFS.

1.4.5 Insulation Board-

Insulation Board must be approved and labeled under third party quality program as required by applicable building code.

1.4.6 Pre-Installation Conference

After approval of submittals and before commencing any work on the EIFS, including installation of any sheathing board, insulation, and associated work, the Contracting Officer will hold a pre-installation conference to review:

a. Drawings, specifications, and samples;

b. Procedure for on-site inspection and acceptance of EIFS substrate and pertinent details (for example, mock-up installation);

c. Contractor's plan for coordination of work of the various trades involved in providing EIF system and other components;

d. Inspection procedures; and

e. Safety requirements.

Pre-installation conference must be attended by the Contractor, [EIFS Q.C.

Specialist, and all personnel directly responsible for installation of the EIF system, including sealant applicator, and personnel responsible for related work, such as flashing and sheet metal, windows and doors, and a representative of the EIFS manufacturer. Before beginning EIFS work, the contractor must confirm in writing the resolution of conflicts among those attending the pre-installation conference.

1.5 DELIVERY AND STORAGE

Deliver materials to job site in original unopened packages, marked with manufacturer's name, brand name, and description of contents. Store materials off the ground and in accordance with the manufacturer's recommendations in a clean, dry, well-ventilated area. Protect stored materials from rain, sunlight, and excessive heat. Keep coating materials which would be damaged by freezing at a temperature not less than 4 degrees C 40 degrees F. Do not expose insulation board to flame or other ignition sources.

1.6 ENVIRONMENTAL CONDITIONS

a. Do not prepare materials or apply EIFS during inclement weather unless appropriate protection is provided. Protect installed materials from inclement weather until they are dry.

b. Apply sealants and wet materials only at ambient temperatures of 4 degrees C 40 degrees F or above and rising, unless supplemental heat is provided. The system must be protected from inclement weather and maintain this temperature for a minimum of 24 hours after installation.

c. Do not leave insulation board exposed to sunlight after installation.

1.7 WARRANTY

Furnish manufacturer's standard warranty for the EIFS. Warranty must run directly to Government and cover a period of not less than 5 years from date Government accepted the work.

PART 2 PRODUCTS

2.2 COMPATIBILITY

Provide all materials compatible with each other and with the substrate, and as recommended by EIFS manufacturer.

]2.4 ADHESIVE

Manufacturer's standard product, including primer as required, must be compatible with substrate and insulation board to which the system is applied.

2.6 THERMAL INSULATION

2.6.1 Manufacturer's Recommendations

Provide only thermal insulation recommended by the EIFS manufacturer for the type of application intended.

2.6.2 Insulation Board

Insulation board must be standard product of manufacturer and must be compatible with other systems components. Boards must be factory marked individually with the manufacturer's name or trade mark, the material specification number, the R-value at 24 degree C 75 degree F, and thickness. No layer of insulation shall be less than 20 mm 3/4 inch thick. The maximum thickness of all layers must not exceed 100 mm 4 inches.

Insulation Board must be certified as aged, in block form, prior to cutting and shipping, a minimum of 6 weeks by air drying, or equivalent.

a. Thermal resistance: As indicated on drawings.

b. Insulating material: [ASTM C578] Type I as recommended by the EIFS manufacturer and treated to be compatible with other EIFS components.

Age insulation by air drying a minimum of 6 weeks prior to cutting and shipping.

c. Drainage: Preform channels into the interior face of insulation board or provide polypropylene drainage lath spacer to provide water drainage system.

2.7 BASE COAT

Manufacturer's standard product and compatible with other systems components.

2.8 PORTLAND CEMENT

Conform to ASTM C150/C150M, Type I or II as required, fresh and free of lumps, and approved by the systems manufacturer.

2.9 REINFORCING FABRIC

Reinforcing fabric mesh must be alkali-resistant, balanced, open weave , glass fiber fabric made from twisted multi-end strands specifically treated for compatibility with the other system materials, and comply with ASTM E2098/E2098M and as recommended by EIFS manufacturer.

2.10 FINISH COAT

Manufacturer's standard product conforming to the requirements in the paragraph on Sub-Component Requirements and Tests. For color consistency, use materials from the same batch or lot number.

2.11 SEALANT PRIMER

Non-staining, quick-drying type recommended by sealant manufacturer and EIFS manufacturer.

2.12 ACCESSORIES

Conform to recommendations of EIFS manufacturer, including trim, edging, anchors, and expansion joints. All metal items and fasteners to be corrosion resistant.

2.13 JOINT SEALANT

Non-staining, quick-drying type meeting ASTM C920, as Type S or M, minimum Grade NS, minimum Class 25 and compatible with the finish system type and grade, and recommended by both the sealant manufacturer and EIFS manufacturer.

2.14 BOND BREAKER

As required by EIFS manufacturer and recommended by sealant manufacturer and EIFS manufacturer.

2.15 BACKER ROD

Closed cell polyethylene free from oil or other staining elements and as recommended by sealant manufacturer and EIFS manufacturer. Do not use absorptive materials as backer rod. The backer rod should be sized 25 percent larger than the width of the joint.

PART 3 EXECUTION

3.1 EXAMINATION

Examine substrate and existing conditions to determine that the EIFS can be installed as required by the EIFS manufacturer and that all work related to the EIFS is properly coordinated. Surface must be sound and free of oil, loose materials or protrusions which will interfere with the system installation. If deficiencies are found, notify the Contracting Officer and do not proceed with installation until the deficiencies are corrected. The substrate must be plane, with no deviation greater than 6 mm 1/4 inch when tested with a 3 m 10 foot straightedge. Determine flatness, plumbness, and any other conditions for conformance to manufacturer's instructions.

3.2 SURFACE PREPARATION

Prepare existing surfaces for application of the EIFS to meet flatness tolerances and surface preparation according to manufacturer's installation instructions. Provide clean surfaces free of oil and loose material without protrusions adversely affecting the installation of the insulation board.

For adhesively attached EIFS, existing deteriorated paint must be removed.

Due to substrate conditions or as recommended by the system manufacturer, a primer may be required. Apply the primer to existing surfaces as recommended by the manufacturer. Use masking tape to protect areas adjacent to the EIFS to prevent base or finish coat to be applied to areas not intended to be covered with the EIFS. The contractor must not proceed with the installation until all noted deficiencies of the substrate are corrected.

3.3 INSTALLATION

Install EIFS as indicated, comply with manufacturer's instructions except as otherwise specified, and in accordance with the shop drawings. EIFS must be installed only by an applicator trained by the EIFS manufacturer.

Specifically, include all manufacturer recommended provisions regarding flashing and treatment of wall penetrations. Any materials that show visual evidence of biological growth due to the presence of moisture must not be installed on the building project.

[3.3.1 Sheathing Board

Edges and ends of boards must be butted snugly with vertical joints staggered to provide full and even support for the insulation. Do not align sheathing board joints with wall openings. Provide support at both vertical and horizontal joints. Attach sheathing board to metal studs with self-tapping drywall screws. Place fasteners sufficiently close to support imposed loads, but not more than:

a. Maximum of 200 mm 8 inches apart on each supporting stud

Space fasteners more closely when required for negative wind load resistance.

3.3.2 Insulation Board

Unless otherwise specified by the system manufacturer, place the long edge horizontally from level base line. Stagger vertical joints and interlock at corners. Butt joints tightly. Provide flush surfaces at joints.

Offset insulation board joints from joints in sheathing by at least 200 mm 8 inches. Align drainage channels of integral drainage system or provide polypropylene drainage lath space to provide a path for any water weeped from behind the insulation to escape wall construction. Use L-shaped insulation board pieces at corners of openings. Joints of insulation must be butted tightly. Surfaces of adjacent insulation boards must be flush at joints. Gaps greater than 1.6 mm 1/16 inch between the insulation boards must be filled with slivers of insulation. Uneven board surfaces with irregularities projecting more than 1.6 mm 1/16 inch must be rasped in accordance with the manufacturer's instructions to produce an even surface.

Attach insulation board as recommended by manufacturer. The adhered insulation board must be allowed to remain undisturbed for 24 hours prior to proceeding with the installation of the base coat/reinforcing mesh, or longer if necessary for the adhesive to dry. However, do not leave insulation board exposed longer than recommended by insulation manufacturer.

3.3.2.2 Adhesively Fastened Insulation Boards

Apply insulation board using adhesive spread with a notched trowel to the back of the insulation boards in accordance with the manufacturer’s instructions.

3.3.3 Base Coat and Reinforcing Fabric Mesh,

3.3.3.1 Class PB Systems

Allow the adhered insulation board to dry for 24 hours, or longer if necessary, prior to proceeding with the installation of the base coat/reinforcing fabric mesh. Install reinforcing fabric in accordance with manufacturer's instructions. Mix base coat in accordance with the manufacturer's instructions and apply to insulated wall surfaces to the thickness specified by the system manufacturer and provide any other reinforcement recommended by EIFS manufacturer. Trowel the reinforcing fabric mesh into the wet base coat material. Fully embed the mesh in the base coat. When properly worked-in, the pattern of the reinforcing fabric mesh must not be visible. Provide diagonal reinforcement at opening corners. Back-wrap or edge wrap all terminations of the EIFS. Overlap the reinforcing fabric mesh a minimum of 60 mm 2.5 inches on previously installed mesh, or butted, in accordance with the manufacturer’s instructions.

]3.3.4 Finish Coat

The base coat/reinforcing mesh must be allowed to dry a minimum of 24 hours prior to application of the finish coat. Surface irregularities in the base coat, such as trowel marks, board lines, reinforcing mesh laps, etc., must be corrected prior to the application of the finish coat. Apply and level finish coat in one operation. Obtain final texture by trowels, floats, or by spray application as necessary to achieve the required finish matching the existing installation. Apply the finish coat to the dry base coat maintaining a wet edge at all times to obtain a uniform appearance.

The thickness of the finish coat must be in accordance with the system manufacturer’s current published instructions. Apply finish coat so that it does not cover surfaces to which joint sealants are to be applied.

3.4 JOINT SEALING

Seal EIFS at openings as recommended by the system manufacturer. Apply sealant only to the base coat or base coat with EIFS Manufacturer's color coating. Do not apply sealant to the finish coat.

3.4.1 Surface Preparation, Backer Rod, and Primer

Immediately prior to application, remove loose matter from joint. Ensure that joint is dry and free of finish coat, or other foreign matter.

Install backer rod. Apply primer as required by sealant and EIFS manufacturer. Check that joint width is as shown on drawings but in no case shall it be less than 13 mm 0.5 inch for perimeter seals and 20 mm

0.75 inch for expansion joints. The width must not be less than 4 times the anticipated movement. Check sealant manufacturer's recommendations regarding proper width to depth ratio.

3.4.2 Sealant

Do not apply sealant until all EIFS coatings are fully dry. Apply sealant in accordance with sealant manufacturer's instructions with gun having nozzle that fits joint width. Do not use sealant that has exceeded shelf life or cannot be discharged in a continuous flow. Completely fill the joint solidly with sealant without air pockets so that full contact is made with both sides of the joint. Tool sealant with a round instrument that provides a concave profile and a uniformly smooth and wrinkle free sealant surface. Do not wet tool the joint with soap, water, or any other liquid tooling aid. During inclement weather, protect the joints until sealant application. Use particular caution in sealing joints between window and door frames and the EIFS wall and at all other wall penetrations. Clean all surfaces to remove excess sealant.

3.5 FIELD QUALITY CONTROL

Throughout the installation, the contractor must establish and maintain an inspection procedure to assure compliance of the installed EIFS with contract requirements. Work not in compliance must be removed and replaced or corrected in an approved manner. The inspection procedures, from acceptance of deliveries through installation of sealants and final acceptance must be performed by qualified inspector trained by the manufacturer. No work on the EIFS is allowed unless the inspector is present at the job site.

]3.5.2 Inspection Check List

During the installation and at the completion of installation, perform inspections covering at the minimum all applicable items enumerated on the attached check list. The inspector must initial and date all applicable items, sign the check list, and submit it to the Contracting Officer at the completion of the EIFS erection.

CHECK LIST

Item Description Appr'd/Date_

a. Materials are handled and stored correctly. _

b. Environmental conditions are within specified limits, _ including temperature not below 4 degrees C (40 degrees F), c.

and the work is protected from the elements as required.

Preparation and installation is performed by qualified personnel using the correct tools.

d. Adjacent areas to which EIFS is not to be applied (such as on window and door frames) are protected with masking tape, plastic films, drop cloths, etc.

to prevent accidental application of EIFS materials.

e. Control, expansion and aesthetic joints are installed as indicated or recommended. Accessories are properly installed.

f. Substrate is in-plane, properly attached, clean, dry, and free of contaminants. Concrete substrate is free of efflorescence.

g. Materials are mixed thoroughly and in proper proportions. _

h. Adhesive is applied in sufficient quantity with proper-size notched trowel.

i. Mechanical attachments have proper spacing, layout and fastener depth.

j. Insulation boards are tightly abutted, in running bond pattern, with joints staggered with the sheathing, board corners interlocked, L-shaped boards around openings, edges free of adhesive, and provision for joints. Gaps

CHECK LIST

Item Description Appr'd/Date_ are filled and surfaces rasped.

k. Insulation adhesive must be allowed to dry (a minimum of _ 24-hours) prior to the application of the base coat.

l. Reinforcing fabric mesh is properly back-wrapped at _ terminations.

m. Reinforcing fabric mesh is fully embedded and properly _ placed. Corners are reinforced. Openings are diagonally reinforced. Mesh overlaps minimum 65 mm (2- 1/2 inches).

n. Base coat thickness is within specified limits. _

o. The base coat/reinforcing fabric mesh must be allowed to _ dry (a minimum of 24-hours) prior to the application of the finish coat.

p. Finish coat is applied with sufficient number of _ personnel and stopped at suitable points. Floats and methods of texturing are uniform.

q. All flashings are properly installed. _

r. All joints are properly sealed in their entire length _ at time and under environmental conditions as specified by the manufacturer.

s. All scaffolding, equipment, materials, debris _ and temporary protection are removed from site upon completion.

Name of Inspector: Signed: Date:

3.6 CLEANUP

Upon completion, remove all scaffolding, equipment, materials and debris from site. Remove all temporary protection installed to facilitate installation of EIFS.

-- End of Section --

DIVISION 07 - THERMAL AND MOISTURE PROTECTION

SECTION 07 60 00

FLASHING AND SHEET METAL

22 March 2017

PART 1 GENERAL

1.1 REFERENCES

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.

AMERICAN WELDING SOCIETY (AWS)

AWS D1.2/D1.2M (2014) Structural Welding Code - Aluminum

ASTM INTERNATIONAL (ASTM)

ASTM A308/A308M (2010) Standard Specification for Steel Sheet, Terne (Lead-Tin Alloy) Coated by the Hot Dip Process

ASTM A480/A480M (2016) Standard Specification for General

Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and Strip

ASTM A653/A653M (2015; E 2016) Standard Specification for

Steel Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Galvannealed) by the Hot-Dip Process

ASTM B101 (2012) Standard Specification for

Lead-Coated Copper Sheet and Strip for

Building Construction

ASTM B209 (2014) Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate

ASTM B209M (2014) Standard Specification for Aluminum and Aluminum-Alloy Sheet and Plate (Metric)

ASTM B221 (2014) Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes

ASTM B221M (2013) Standard Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, and Tubes (Metric)

ASTM B32 (2008; R 2014) Standard Specification for

Solder Metal

ASTM B370 (2012) Standard Specification for Copper Sheet and Strip for Building Construction

ASTM B69 (2013) Standard Specification for Rolled

Zinc

ASTM D1784 (2011) Standard Specification for Rigid Poly(Vinyl Chloride) (PVC) Compounds and Chlorinated Poly(Vinyl Chloride) (CPVC) Compounds

ASTM D226/D226M (2009) Standard Specification for

Asphalt-Saturated Organic Felt Used in Roofing and Waterproofing

ASTM D41/D41M (2011; R 2016) Standard Specification for

Asphalt Primer Used in Roofing, Dampproofing, and Waterproofing

ASTM D4586/D4586M (2007; E 2012; R 2012) Asphalt Roof

Cement, Asbestos-Free

SHEET METAL AND AIR CONDITIONING CONTRACTORS' NATIONAL ASSOCIATION

(SMACNA)

SMACNA 1793 (2012) Architectural Sheet Metal Manual, 7th Edition

SINGLE PLY ROOFING INDUSTRY (SPRI)

ANSI/SPRI RD-1 (2009) Performance Standard for Retrofit Drains

1.2 GENERAL REQUIREMENTS

Finished sheet metalwork will form a weathertight construction without waves, warps, buckles, fastening stresses or distortion, which allows for expansion and contraction. Sheet metal mechanic is responsible for cutting, fitting, drilling, and other operations in connection with sheet metal required to accommodate the work of other trades. Coordinate installation of sheet metal items used in conjunction with roofing with roofing work to permit continuous roofing operations.

1.3 SUBMITTALS

Government approval is required for submittals with a "G" designation;

submittals not having a "G" designation are [for Contractor Quality Control approval.][for information only. When used, a designation following the "G" designation identifies the office that will review the submittal for the Government.] Submittals with an "S" are for inclusion in the Sustainability Notebook, in conformance to Section 01 33 29 SUSTAINABILITY REPORTING. Submit the following in accordance with Section 01 33 00 SUBMITTAL PROCEDURES:

SD-02 Shop Drawings

Gutters; G

Copings; G

Indicate thicknesses, dimensions, fastenings and anchoring methods, expansion joints, and other provisions necessary for thermal expansion and contraction. Scaled manufacturer's catalog data may be submitted for factory fabricated items.

SD-11 Closeout Submittals

Quality Control Plan

Submit for sheet metal work in accordance with paragraph entitled "Field Quality Control."

1.4 DELIVERY, HANDLING, AND STORAGE

Package and protect materials during shipment. Uncrate and inspect materials for damage, dampness, and wet-storage stains upon delivery to the job site. Remove from the site and replace damaged materials that cannot be restored to like-new condition.

Handle sheet metal items to avoid damage to surfaces, edges, and ends. Store materials in dry, weather-tight, ventilated areas until immediately before installation.

2.1 MATERIALS

Furnish sheet metal items in 2400 to 3000 mm 8 to 10 foot lengths. Single pieces less than 2400 mm 8 feet long may be used to connect to factory-fabricated inside and outside corners, and at ends of runs.

Factory fabricate corner pieces with minimum 300 mm 12 inch legs. Provide accessories and other items essential to complete the sheet metal installation. Provide accessories made of the same or compatible materials as the items to which they are applied. Fabricate sheet metal items of the materials specified below and to the gage, thickness, or weight shown in Table I at the end of this section. Provide sheet metal items with mill finish unless specified otherwise. Where more than one material is listed for a particular item in Table I, each is acceptable and may be used except as follows:

2.1.1 Exposed Sheet Metal Items

Must be of the same material. Consider the following as exposed sheet metal: gutters, including hangers; downspouts; gravel stops and fascias;

cap, valley, steeped, base, and eave flashings and related accessories.

2.1.8.1 Alclad

When fabricated of aluminum, fabricate the items Alclad 3003, Alclad 3004, Alclad 3005, clad on one side unless otherwise indicated.

a. Gutters, downspouts, and hangers

b. Gravel stops and fascias

c. Flashing

]2.1.10.2 Finish

Exposed exterior sheet metal items of aluminum must have a baked-on, factory-applied color coating of polyvinylidene fluoride (PVF2) or other equivalent fluorocarbon coating applied after metal substrates have been cleaned and pretreated. Provide finish coating dry-film thickness of 0.020 to 0.033 mm 0.8 to 1.3 mils and color of Bronze.

3.1.1 Metal Roofing

]3.1.2 Workmanship

Make lines and angles sharp and true. Free exposed surfaces from visible wave, warp, buckle, and tool marks. Fold back exposed edges neatly to form a 13 mm 1/2 inch hem on the concealed side. Make sheet metal exposed to the weather watertight with provisions for expansion and contraction.

Make surfaces to receive sheet metal plumb and true, clean, even, smooth, dry, and free of defects and projections. For installation of items not shown in detail or not covered by specifications conform to the applicable requirements of SMACNA 1793, Architectural Sheet Metal Manual.

Provide sheet metal flashing in the angles formed where roof decks abut walls, curbs, ventilators, pipes, or other vertical surfaces and wherever indicated and necessary to make the work watertight. Join sheet metal items together as shown in Table II.

3.1.3 Nailing

Confine nailing of sheet metal generally to sheet metal having a maximum width of 450 mm 18 inch. Confine nailing of flashing to one edge only.

Space nails evenly not over 75 mm 3 inch on center and approximately 13 mm 1/2 inch from edge unless otherwise specified or indicated. Face nailing will not be permitted. Where sheet metal is applied to other than wood surfaces, include in shop drawings, the locations for sleepers and nailing strips required to secure the work.

3.1.4 Cleats

Provide cleats for sheet metal 450 mm 18 inch and over in width. Space cleats evenly not over 300 mm 12 inch on center unless otherwise specified or indicated. Unless otherwise specified, provide cleats of 50 mm wide by 75 mm long 2 inch wide by 3 inch long and of the same material and thickness as the sheet metal being installed. Secure one end of the cleat with two nails and the cleat folded back over the nailheads. Lock the other end into the seam. [Where the fastening is to be made to concrete or masonry, use screws and drive in expansion shields set in concrete or masonry. ]Pretin cleats for soldered seams.

3.1.5 Bolts, Rivets, and Screws

Install bolts, rivets, and screws where indicated or required. Provide compatible washers where required to protect surface of sheet metal and to provide a watertight connection. Provide mechanically formed joints in aluminum sheets 1.0 mm 0.040 inch or less in thickness.

3.1.6 Seams

Straight and uniform in width and height with no solder showing on the face.

3.1.6.1 Flat-lock Seams

Finish not less than 20 mm 3/4 inch wide.

3.1.6.2 Lap Seams

Finish soldered seams not less than 25 mm one inch wide. Overlap seams not soldered, not less than 75 mm 3 inch.

3.1.6.3 Loose-Lock Expansion Seams

Not less than 75 mm 3 inch wide; provide minimum 25 mm one inch movement within the joint. Completely fill the joints with the specified sealant, applied at not less than 3 mm 1/8 inch thick bed.

3.1.7 Welding and Mechanical Fastening

Use welding for aluminum of thickness greater than one mm 0.040 inch.

Aluminum one mm 0.040 inch or less in thickness must be butted and the space backed with formed flashing plate; or lock joined, mechanically fastened, and filled with sealant as recommended by the aluminum manufacturer.

3.1.7.1 Mechanical Fastening of Aluminum

Use No. 12, aluminum alloy, sheet metal screws or other suitable aluminum alloy or stainless steel fasteners. Drive fasteners in holes made with a No. 26 drill in securing side laps, end laps, and flashings. Space fasteners 300 mm 12 inch maximum on center. Where end lap fasteners are required to improve closure, locate the end lap fasteners not more than 50 mm 2 inch from the end of the overlapping sheet.

3.1.9 Protection from Contact with Dissimilar Materials

3.1.9.1 Aluminum

Do not allow aluminum surfaces in direct contact with other metals except stainless steel, zinc, or zinc coating. Where aluminum contacts another metal, paint the dissimilar metal with a primer followed by two coats of aluminum paint. Where drainage from a dissimilar metal passes over aluminum, paint the dissimilar metal with a non-lead pigmented paint.

3.1.10 Expansion and Contraction

Provide expansion and contraction joints at not more than 9750 mm 32 foot intervals for aluminum and at not more than 12 meter 40 foot intervals for other metals. Provide an additional joint where the distance between the last expansion joint and the end of the continuous run is more than half the required interval. Space joints evenly. Join extruded aluminum gravel stops and fascias by expansion and contraction joints spaced not more than 3600 mm 12 feet apart.

3.1.14.1 Joints

Leave open the section ends of gravel stops and fascias 6 mm 1/4 inch and backed with a formed flashing plate, mechanically fastened in place and lapping each section end a minimum of 100 mm 4 inch set laps in plastic cement. Face nailing will not be permitted. Install prefabricated aluminum gravel stops and fascias in accordance with the manufacturer's printed instructions and details.

3.1.16 Gutters

The hung type of shape indicated and supported on underside by brackets that permit free thermal movement of the gutter. Provide gutters in sizes indicated complete with mitered corners, end caps, outlets, brackets, and other accessories necessary for installation. Bead with hemmed edge or reinforce the outer edge of gutter with a stiffening bar not less than 20 by 5 mm 3/4 by 3/16 inch of material compatible with gutter. Fabricate gutters in sections not less than 2400 mm 8 feet. Lap the sections a minimum of 25 mm one inch in the direction of flow or provide with concealed splice plate 150 mm 6 inch minimum. Join the gutters, other than aluminum, by riveted and soldered joints. Join aluminum gutters with riveted sealed joints. Provide expansion-type slip joints midway between outlets. Adjust gutters to slope uniformly to outlets, with high points occurring midway between outlets. Fabricate hangers and fastenings from metals.

3.1.27 Copings

Provide coping 8 or 10 feet long joined by a 20 mm 3/4 inch locked seam.

Terminate outer edges in edge strips. Install with sealed lap joints as indicated.

]3.3 CLEANING

Clean exposed sheet metal work at completion of installation. Remove grease and oil films, handling marks, contamination from steel wool, fittings and drilling debris, and scrub-clean. Free the exposed metal surfaces of dents, creases, waves, scratch marks, and solder or weld marks.

3.4 REPAIRS TO FINISH

Scratches, abrasions, and minor surface defects of finish may be repaired in accordance with the manufacturer's printed instructions and as approved.

Repair damaged surfaces caused by scratches, blemishes, and variations of color and surface texture. Replace items which cannot be repaired.

3.5 FIELD QUALITY CONTROL

Establish and maintain a Quality Control Plan for sheet metal used in conjunction with roofing to assure compliance of the installed sheet metalwork with the contract requirements. Remove work that is not in compliance with the contract and replace or correct. Include quality control, but not be limited to, the following:

a. Observation of environmental conditions; number and skill level of sheet metal workers; condition of substrate.

b. Verification that specified material is provided and installed.

c. Inspection of sheet metalwork, for proper size(s) and thickness(es), fastening and joining, and proper installation.

3.5.1 Procedure

Submit for approval prior to start of roofing work. Include a checklist of points to be observed. Document the actual quality control observations and inspections. Furnish a copy of the documentation to the Contracting Officer at the end of each day.

TABLE I. SHEET METAL WEIGHTS, THICKNESSES, AND GAGES

Sheet Metal Items [Copper kilograms per square meter]

[Aluminum, mm]

[Stainless Steel, mm]

[Terne-Coated Stainless Steel, mm]

[Zinc-Coated Steel, mm]

[Building Expansion Joints]

[Cover] 4.9 0.81 0.38 0.38 0.6

[Waterstop-bellows or flanged, U-type.]

4.9 - 0.38 0.38 -

[Covering on minor flat, pitched or curved surfaces]

6.125 1.02 0.46 0.46 -

[Downspouts and leaders]

4.9 0.81 0.38 0.38 0.6

[Downspout clips and anchors]

- 1.02 clip 3.175 anchor

[Downspout straps, 50 mm]

14.7 (a) 1.52 1.27 - -

[Conductor heads] 4.9 0.81 0.38 0.38 -

[Scupper lining] 6.125 0.81 0.38 0.38 -

[Strainers, wire diameter or gage]

4.0 gage 3.66 diameter

2.77 diameter

[Flashings:]

[Base] 6.125 1.02 0.46 0.46 0.6

[Cap (Counter-flashing)]

4.9 0.81 0.38 0.38 0.5

[Eave] 4.9 - 0.38 0.38 0.6

[Spandrel beam] 3.1 - 0.25 0.25 -

[Bond barrier] 4.9 - 0.38 0.38 -kilograms per square meter]

[Aluminum, mm]

[Stainless Steel, mm]

[Terne-Coated Stainless Steel, mm]

[Zinc-Coated Steel, mm]

[Stepped] 4.9 0.81 0.38 0.38 -

[Valley] 4.9 0.81 0.38 0.38 -

[Roof drain] 4.9 (b)

[Pipe vent sleave (d)]

[Coping] 4.9 - - - -

[Gravel stops and fascias:]

[Extrusions] - 1.91 - - -

[Sheets, corrugated]

4.9 0.81 0.38 0.38 -

[Sheets, smooth] 6.125 1.27 0.46 0.46 0.6

[Edge strip] 7.35 1.27 0.635 - -

[Gutters:]

[Gutter section] 4.9 0.81 0.38 0.38 0.6

[Continuous cleat] 4.9 0.81 0.38 0.38 0.6

[Hangers, dimensions]

25 mm by 3 mm (a)

25 mm by 2 mm (c)

25 mm by 1 mm

[Joint Cover plates (See Table

II)]

4.9 0.81 0.38 0.38 0.6

[Reglets (c)] 3.1 - 0.25 0.25 -

[Splash pans] 4.9 1.02 0.46 0.46 -

(a) Brass.

(b) May be lead weighing 19.6 kilograms per square meter.

(c) May be polyvinyl chloride.

(d) 12.25 kilogram minimum lead sleeve with 100 mm flange. Where lead sleeve is impractical, refer to paragraph entitled "Single Pipe Vents" for optional material.

kilograms per square foot]

[Aluminum, inch]

[Stainless Steel, inch]

[Terne-Coated Stainless Steel, inch]

[Zinc-Coated Steel, U.S.

Std. Gage]

[Building Expansion Joints]

[Cover] 16 .032 .015 .015 24

[Waterstop-bellows or flanged, U-type.]

16 - .015 .015 -

[Covering on minor flat, pitched or curved surfaces]

20 .040 .018 .018 -

[Downspouts and leaders]

16 .032 .015 .015 24

[Downspout clips and anchors]

- .040 clip .125 anchor

[Downspout straps, 2-inch]

48 (a) .060 .050 - -

[Conductor heads] 16 .032 .015 .015 -

[Scupper lining] 20 .032 .015 .015 -

[Strainers, wire diameter or gage]

No. 9 gage .144 diameter

.109 diameter

[Flashings:]

[Base] 20 .040 .018 .018 24

[Cap (Counter-flashing)]

16 .032 .015 .015 26

[Eave] 16 - .015 .015 24

[Spandrel beam] 10 - .010 .010 -

[Bond barrier] 16 - .015 .015 -kilograms per square foot]

[Aluminum, inch]

[Stainless Steel, inch]

[Terne-Coated Stainless Steel, inch]

[Zinc-Coated Steel, U.S.

Std. Gage]

[Stepped] 16 .032 .015 .015 -

[Valley] 16 .032 .015 .015 -

[Roof drain] 16 (b)

[Pipe vent sleave (d)]

[Coping] 16 - - - -

[Gravel stops and fascias:]

[Extrusions] - .075 - - -

[Sheets, corrugated]

16 .032 .015 .015 -

[Sheets, smooth] 20 .050 .018 .018 24

[Edge strip] 24 .050 .025 - -

[Gutters:]

[Gutter section] 16 .032 .015 .015 24

[Continuous cleat] 16 .032 .015 .015 24

[Hangers, dimensions]

1 inch by 1/8 inch (a)

1 inch by .

inch (c)

1 inch by .0 inch

[Joint Cover plates (See Table

II)]

16 .032 .015 .015 24

[Reglets (c)] 10 - .010 .010 -

[Splash pans] 16 .040 .018 .018 -

(a) Brass.

(b) May be lead weighing 4 pounds per square foot.

(c) May be polyvinyl chloride.

kilograms per square foot]

[Aluminum, inch]

[Stainless Steel, inch]

[Terne-Coated Stainless Steel, inch]

[Zinc-Coated Steel, U.S.

Std. Gage]

(d) 2.5 pound minimum lead sleeve with 4 inch flange. Where lead sleeve is impractical, refer to paragraph entitled "Single Pipe Vents" for optional material.

TABLE II. SHEET METAL JOINTS

TYPE OF JOINT

Item Designation Copper, Terne-Coated Stainless Steel, Zinc-Coated Steel and Stainless Steel

Aluminum Remarks

Joint cap for building expansion seam, cleated joint at roof

30 mm single lock, standing seam, cleated

30 mm single lock, standing

Flashings

Base 25 mm 75 mm lap for expansion joint

25 mm flat locked, soldered; sealed;

75 mm lap for expansion joint

Aluminum producer's recommended hard setting sealant for locked aluminum joints. Fill each metal expansion joint with a joint sealing compound compound.

Cap-in reglet 75 mm lap 75 mm lap Seal groove with joint sealing compound.

Reglets Butt joint -- Seal reglet groove with joint sealing compound.

Item Designation Copper, Terne-Coated Stainless Steel, Zinc-Coated Steel and Stainless Steel

Aluminum Remarks

Eave 25 mm flat locked, cleated. 25 mm loose locked, sealed expansion joint, cleated.

25 mm flat locked, locked, cleated 25 mm loose locked, sealed expansion joints, cleated

Same as base flashing.

Stepped 75 mm lap 75 mm lap --

Valley 150 mm lap cleated 150 mm lap cleated --

Edge strip Butt Butt --

Gravel stops:

Extrusions -- Butt with 13 mm space

Use sheet flashing beneath and a cover plate

Sheet, smooth Butt with 6 mm space Butt with 6 mm space Use sheet flashing backup plate.

Sheet, corrugated Butt with 6 mm space Butt with 6 mm space Use sheet flashing beneath and a cover…