SECTION 07729

ROOF SNOW GUARDS

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Copyright 2013 - 2013 ARCAT, Inc. - All rights reserved

PART	GENERAL

SECTION INCLUDES

Metal Roof Snow Guards

Polycarbonate Roof Snow Guards

Fastening devices.

RELATED SECTIONS

Section 05310 - Steel Deck.

Section 05400 - Cold-Formed Metal Framing: Structural framing supporting metal roofing

Section 06112 - Framing and Sheathing: Plywood roof deck substrate.

Section 06150 - Wood Decking.

Section 07220 - Roof and Deck Insulation.

Section 07620 - Sheet Metal Flashing and Trim.

Section 07714 - Gutters and Downspouts

Section 07900 - Joint Sealers

REFERENCES

ASTM A 792 - Standard Specification for Steel Sheet, 55 % Aluminum-Zinc Alloy-Coated by the Hot-Dip Process.

ASTM B 209 - Standard Specification for Aluminum and Aluminum Alloy Sheet and Plate.

DESIGN / PERFORMANCE REQUIREMENTS

Design Requirements for Wall Systems:

Provide to spacing indicated on the Drawings.

System Design: Snow guard system as designed by the manufacturer shall be a complete system. All components of the system shall be supplied by the same manufacturer.

Accessories and Fasteners: Accessories and fasteners shall be capable of resisting the design forces in accordance with local building code.

SUBMITTALS

Submit under provisions of Section 01300.

Product Data: Manufacturer's data sheets on each product to be used, including:

Preparation instructions and recommendations.

Storage and handling requirements and recommendations.

Installation methods.

Shop Drawings: Prepared specifically for this project; showing dimensions of metal roof snow guards and accessories, fastening details and connections and interface with other products.

Selection Samples: For each finish product specified, two complete sets of color chips representing manufacturer's full range of available colors and patterns.

Verification Samples: For each finish product specified, two samples, minimum size 6 inches (150 mm) long, representing actual product, color, and patterns.

Manufacturer's Certificates: Certify products meet or exceed specified requirements.

Closeout Submittals: Provide manufacturer's maintenance instructions that include recommendations for periodic checking and maintenance of installed system.

QUALITY ASSURANCE

Manufacturer Qualifications: Company specializing in production of Metal Roof Snow Guard Products of the type specified with a minimum 5 years documented experience.

Installer Qualifications: Company specializing in installation of Metal Roof Snow Guard Products of the type specified with a minimum 3 years documented experience.

Mock-Up: Provide a mock-up for evaluation of surface preparation techniques and application workmanship.

Finish areas designated by Architect.

Do not proceed with remaining work until workmanship, color, and sheen are approved by Architect.

Refinish mock-up area as required to produce acceptable work.

DELIVERY, STORAGE, AND HANDLING

Deliver components to job site properly packaged to provide protection against transportation damage.

Store products in manufacturer's unopened packaging in a clean, dry location until ready for installation.

Stack all materials to prevent damage and to allow for adequate ventilation.

SEQUENCING

Ensure that products of this section are supplied to affected trades in time to prevent interruption of construction progress.

PROJECT CONDITIONS

Maintain environmental conditions (temperature, humidity, and ventilation) within limits recommended by manufacturer for optimum results. Do not install products under environmental conditions outside manufacturer's absolute limits.

PART	PRODUCTS

MANUFACTURERS

Acceptable Manufacturer: Sno-Gem, Inc., which is located at: 4800 Metalmaster Way ; McHenry, IL 60050; Toll Free Tel: 888-766-4367; Tel: 815-477-GEMS; Fax: 815-455-GEMS; Email: request info (bzayas@snogem.com); Web: www.snogem.com

Substitutions: Not permitted.

Requests for substitutions will be considered in accordance with provisions of Section 01600.

MATERIALS

Steel Sheet: Galvalume Steel Sheet, 55% Aluminum-Zinc Alloy-Coated by the Hot-Dip Process in conformance with ASTM A 792. Available in 22, 24 and 26 gauge sheet.

Aluminum Sheet: Aluminum sheet conforming with ASTM B 209. Available in .032, .040 and .050 gauge sheet.

Factory Finish: Kynar 500 PVDF resin-based coating, applied by the manufacturer on a continuous coil coating line.

Standard top side color coating comprised of a 0.70 - 0.80 mil full strength, 70% Kynar 500/Hylar 5000 fluorocarbon (Polyvinylidene Fluoride PVF2) coating over urethane primer of 0.20 - 0.30 mil on finish side. Total face dry film thickness: 1.0 mil + 0.2 mil.

Reverse side shall be coated with primer and wash coat of 0.30 mil plus or minus 0.05 mil.

Finish shall conform to all tests for adhesion, flexibility, and longevity as specified by the Kynar 500 PVDF resin-based coating supplier.

Color:

As selected from the manufacturer's standard range.

Custom color as selected by the Architect.

Polycarbonate Systems: Lexan 143R Polycarbonate, or equal, UV-stabilized polycarbonate color is injected throughout the product.

APPLICATIONS/SCOPE

Sno Barricade Clamp-On for Standing Seam Metal Roof Systems

1 inch Clamp-On Standard Model: Designed for Standard Profile Standing Seam Metal Roofs.

Dimensions

Height: 3-1/4 inches.

Width: 4-1/2 inches.

Depth: 1-1/2 inches.

Components:

Sno Barricade Clamps:

Zinc Zamack #3 Alloy

Stainless Steel Set Screws: 300 Series stainless steel.

1 inch Square Tubing:

Aluminum 6061-T6

Stainless Steel.

End Caps

Zinc Zamack #3 Alloy

Stainless steel.

Inserts

Barricade Plates:

Aluminum.

Stainless steel.

Finish: Provide with color as selected by the Architect.

Powder Coating

Kynar Coating

Standard mill finish.

1 inch Clamp-On Wide Body Model: Designed for Wide Profile Standing Seam Metal Roofs.

Dimensions

Height: 3-1/4 inches.

Width: 4-1/2 inches.

Depth: 2-1/8 inches.

Components:

Sno Barricade Clamps:

Zinc Zamack #3 Alloy

Stainless Steel Set Screws: 300 Series stainless steel.

1 inch Square Tubing:

Aluminum 6061-T6

Stainless Steel.

1 inch Round Tubing:

Aluminum 6061-T6

Stainless Steel.

End Caps

Zinc Zamack #3 Alloy

Stainless steel.

Inserts

Barricade Plates:

Aluminum.

Stainless steel.

Finish:

Powder Coating

Kynar Coating

Standard mill finish.

2 inch Clamp-On Standard Model: Designed for Standard Profile Standing Seam Metal Roofs.

Dimensions

Height: 4-3/4 inches.

Width: 6-1/2 inches.

Depth: 1-1/4 inches.

Components:

Sno Barricade Clamps:

Zinc Zamack #3 Alloy

Stainless Steel Set Screws: 300 Series stainless steel.

1 inch Square Tubing:

Aluminum 6061-T6

Stainless Steel.

End Caps

Zinc Zamack #3 Alloy

Stainless steel.

Inserts

Barricade Plates:

Aluminum.

Stainless steel.

Finish:

Powder Coating

Kynar Coating

Standard mill finish.

2 inch Clamp-On Wide Body Model: Designed for Wide Profile Standing Seam Metal Roofs.

Dimensions

Height: 4-3/4 inches.

Width: 6-1/2 inches.

Depth: 2-1/8 inches.

Components:

Sno Barricade Clamps:

Zinc Zamack #3 Alloy

Stainless Steel Set Screws: 300 Series stainless steel.

1 inch Square Tubing:

Aluminum 6061-T6

Stainless Steel.

End Caps

Zinc Zamack #3 Alloy

Stainless Steel.

Inserts

Barricade Plates:

Aluminum.

Stainless steel.

Finish:

Powder Coating

Kynar Coating

Standard mill finish.

Deck Mount Bar System with Flat Base for Metal Roofs: Mechanically fastened flat base for metal roofing systems.

1 inch Retention Bar System

Type:

Triple Retention Bar

Double Retention Bar

Single Retention Bar:

Components:

Bracket:

304 Stainless steel.

Brass.

Base Plate

304 Stainless steel.

Brass.

1 inch Square Tubing:

Aluminum 6061-T6

Stainless Steel.

Brass.

Red-Brass.

1 inch Round Tubing:

Aluminum 6061-T6

Stainless Steel.

Brass.

Red-Brass.

Inserts:

Zinc Zamack #3 Alloy

Aluminum.

Brass.

End Caps

Zinc Zamack #3 Alloy.

Aluminum.

Stainless Steel.

Brass.

Barricade Plates:

Aluminum.

Stainless steel.

Brass.

Fasteners: Non-corrosive type compatible with the roofing system

2 inch Retention Bar System

Type:

Triple Retention Bar

Double Retention Bar

Single Retention Bar:

Components:

Bracket:

304 Stainless steel.

Brass.

Base Plate

304 Stainless steel.

Brass.

2 inch Square Tubing:

Aluminum 6061-T6

Stainless Steel.

Brass.

Red Brass.

Inserts:

Zinc Zamack #3 Alloy

Aluminum.

Brass.

End Caps

Zinc Zamack #3 Alloy.

Aluminum.

Stainless Steel.

Brass.

Barricade Plates:

Aluminum.

Stainless steel.

Brass.

Fasteners: Non-corrosive type compatible with the roofing system

Deck Mount Bar System with Curved Base for Metal Roofs: Mechanically fastened curved base for corrugated surface metal roofing systems, available in a 1 inch or 2 inch retention bar, using either a single, double, or triple bar support.

1 inch Retention Bar System

Type:

Triple Retention Bar

Double Retention Bar

Single Retention Bar:

Components:

Bracket:

304 Stainless steel.

Brass.

Base Plate

304 Stainless steel.

Brass.

1 inch Square Tubing:

Aluminum 6061-T6

Stainless Steel.

Brass.

Red Brass.

1 inch Square Tubing:

Aluminum 6061-T6

Stainless Steel.

Brass.

Red Brass.

Inserts:

Zinc Zamack #3 Alloy

Aluminum.

Brass.

End Caps

Zinc Zamack #3 Alloy

Aluminum.

Stainless Steel.

Brass.

Barricade Plates:

Aluminum.

Stainless steel.

Brass

Fasteners: Non-corrosive type compatible with the roofing system

Barricade Plate: Stops melting ice and snow from sliding underneath the bar.

2 inch Retention Bar System

Type:

Triple Retention Bar

Double Retention Bar

Single Retention Bar:

Components:

Bracket:

304 Stainless steel.

Brass.

Base Plate

304 Stainless steel.

Brass.

2 inch Square Tubing:

Aluminum 6061-T6

Stainless Steel.

Brass.

Red Brass.

Inserts:

Zinc Zamack #3 Alloy

Aluminum.

Brass.

End Caps

Zinc Zamack #3 Alloy

Aluminum.

Stainless Steel.

Brass.

Barricade Plates:

Aluminum.

Stainless steel.

Brass.

Fasteners: Non-corrosive type compatible with the r4oofing system

Barricade Plate: Stops melting ice and snow from sliding underneath the bar.

Deck Mount Bar System for Membrane Roofs: Mechanically fastened base plate for membrane roofing systems.

1 inch Retention Bar System

Type:

Triple Retention Bar

Double Retention Bar

Single Retention Bar:

Components:

Bracket:

304 Stainless steel.

Brass.

Base Plate

304 Stainless steel.

Brass.

1 inch Square Tubing:

Aluminum 6061-T6

Stainless Steel.

Brass.

Red Brass.

1 inch Round Tubing:

Aluminum 6061-T6

Stainless Steel.

Brass.

Red Brass.

Inserts:

Zinc Zamack #3 Alloy

Aluminum.

Brass.

End Caps

Zinc Zamack #3 Alloy

Aluminum.

Stainless Steel.

Brass.

Barricade Plates:

Aluminum.

Stainless steel.

Brass.

Fasteners: Non-corrosive type compatible with the roofing system

Barricade Plate: Stops melting ice and snow from sliding underneath the bar.

2 inch Retention Bar System

Type:

Triple Retention Bar

Double Retention Bar

Single Retention Bar:

Components:

Bracket:

304 Stainless steel.

Brass.

Base Plate

304 Stainless steel.

Brass.

2 inch Square Tubing:

Aluminum 6061-T6

Stainless Steel.

Brass.

Red Brass.

Inserts:

Zinc Zamack #3 Alloy

Aluminum.

Brass.

End Caps

Zinc Zamack #3 Alloy

Aluminum.

Stainless Steel.

Brass.

Barricade Plates:

Aluminum.

Stainless steel.

Brass.

Fasteners: Non-corrosive type compatible with the roofing system

Barricade Plate: Stops melting ice and snow from sliding underneath the bar.

Slate, Tile and Shingle Bar System Attachment: Custom base plate for slate, tile, and shingle roofing systems.

1 inch Retention Bar System

Type:

Triple Retention Bar

Double Retention Bar

Single Retention Bar:

Components:

Bracket:

304 Stainless steel.

Brass.

Base Plate

304 Stainless steel.

Brass.

1 inch Square Tubing:

Aluminum 6061-T6

Stainless Steel.

Brass.

Red Brass.

1 inch Round Tubing:

Aluminum 6061-T6

Stainless Steel.

Brass.

Red Brass.

Inserts:

Zinc Zamack #3 Alloy

Aluminum.

Stainless Steel 304 alloy.

End Caps

Zinc Zamack #3 Alloy

Aluminum.

Stainless Steel.

Brass.

Barricade Plates:

Aluminum.

Stainless steel.

Brass.

Fasteners: Non-corrosive type compatible with the roofing system

Barricade Plate: Stops melting ice and snow from sliding underneath the bar.

2 inch Retention Bar System

Type:

Triple Retention Bar

Double Retention Bar

Single Retention Bar:

Components:

Bracket:

304 Stainless steel.

Brass.

Base Plate

304 Stainless steel.

Brass.

2 inch Square Tubing:

Aluminum 6061-T6

Stainless Steel.

Brass.

Red Brass.

Inserts:

Zinc Zamack #3 Alloy

Aluminum.

Brass.

End Caps

Zinc Zamack #3 Alloy

Aluminum.

Stainless Steel.

Brass.

Barricade Plates:

Aluminum.

Stainless steel.

Brass.

Fasteners: Non-corrosive type compatible with the roofing system

Barricade Plate: Stops melting ice and snow from sliding underneath the bar.

Spanish and Clay Tile Bar System Attachment: Custom base plate for Spanish and clay tile roof systems.

1 inch Retention Bar System

Type:

Triple Retention Bar

Double Retention Bar

Single Retention Bar:

Components:

Bracket:

304 Stainless steel.

Brass.

Base Plate

304 Stainless steel.

Brass.

1 inch Square Tubing:

Aluminum 6061-T6

Stainless Steel.

Brass.

Red Brass.

Inserts:

Zinc Zamack #3 Alloy

Aluminum.

Brass.

End Caps

Zinc Zamack #3 Alloy

Aluminum.

Stainless Steel.

Brass.

Barricade Plates:

Aluminum.

Brass.

Fasteners: Non-corrosive type compatible with the r4oofing system

Barricade Plate: Stops melting ice and snow from sliding underneath the bar.

2 inch Retention Bar System

Type:

Triple Retention Bar

Double Retention Bar

Single Retention Bar:

Components:

Bracket:

304 Stainless steel.

Brass.

Base Plate

304 Stainless steel.

Brass.

2 inch Square Tubing:

Aluminum 6061-T6

Stainless Steel.

Brass.

Red Brass.

Inserts:

Zinc Zamack #3 Alloy

Aluminum.

Brass.

End Caps

Zinc Zamack #3 Alloy

Aluminum.

Stainless Steel.

Brass.

Barricade Plates:

Aluminum.

Stainless steel.

Brass.

Fasteners: Non-corrosive type compatible with the r4oofing system

Barricade Plate: Stops melting ice and snow from sliding underneath the bar.

Polycarbonate Models For Metal Roof Systems: UV-stabilized polycarbonate.

Original Polycarbonate: Provided with a larger base with greater holding power.

Dimensions

Height: 3.25 inches.

Width: 5 inches.

Depth: 5 inches.

Base:

Insert in base allows for installation over most stiffening ribs

Texture base for additional holding power.

Color:

Clear.

Mold injected with color as selected by the Architect

Junior Polycarbonate: Provided with 12.5 inches of bonding surface and recommended on panels with intermediate ribs.

Dimensions

Height: 3-1/4 inches.

Width: 2 inches.

Depth: 6-1/4 inches.

PART	EXECUTION

EXAMINATION

Do not begin installation until substrates have been properly prepared.

If substrate preparation is the responsibility of another installer, notify Architect of unsatisfactory preparation before proceeding.

PREPARATION

Clean surfaces thoroughly prior to installation and the approved shop drawings.

Prepare surfaces using the methods recommended by the manufacturer for achieving the best result for the substrate under the project conditions.

INSTALLATION

Install in accordance with snow guard manufacturer's instructions and the approved shop drawings. Coordinate the installation with the manufacturer of the roof substrate to which it is installed.

Sno Barricade Models: Clamp-on to standing seam: Install in accordance with the manufacturer's instructions. Following installation inspect and verify the following:

Inspect each clamp to insure assembly is intact.

Inspect and check each set screw to insure proper fastening has been maintained.

Inspect tubing has bent or shows any other evidence of failure or damage, contact the manufacturer immediately.

Inspect Barricade Plate set screw for tightness.

Deck Mount Bar System Models: Fasten to roof deck in accordance with the manufacturer's instructions. Following installation inspect and verify the following:

Inspect each bracket/base plate to insure assembly is intact.

Inspect all fasteners in to the roof deck.

Inspect any snow guard related waterproofing and replace or repair where necessary.

Inspect tubing has bent or shows any other evidence of failure or damage, contact the manufacturer immediately.

Inspect Barricade Plate set screw for tightness.

Deck Mount Bar System Models: Deck Mount Bar System for Membrane Roofs: Mechanically fasten base plate for membrane roofing systems in accordance with the manufacturer's instructions. Following installation inspect and verify the following:

Inspect each bracket/base plate to insure assembly is intact.

Inspect all fasteners in to the roof deck.

Inspect any snow guard related waterproofing and replace or repair where necessary.

Inspect tubing has bent or shows any other evidence of failure or damage, contact the manufacturer immediately.

Inspect Barricade Plate set screw for tightness.

Deck Mount Bar System Models: Surface Mount Bar System for Shingle and/or Tile Roofs: Adhesive fasten base plate to roofing systems in accordance with the manufacturer's instructions. Following installation inspect and verify the following:

Inspect each bracket/base plate to insure assembly is intact.

Inspect all surfaces and full contact adhesive to the roof deck.

Inspect any snow guard related waterproofing and replace or repair where necessary.

Inspect tubing has bent or shows any other evidence of failure or damage, contact the manufacturer immediately.

Inspect Barricade Plate set screw for tightness.

Polycarbonate and/or Metal Snow Guards: Fasten using mechanical fasteners:

Inspect each snow guard to insure assembly is intact.

Inspect sealant around the perimeter. Re-apply any areas as needed.

Inspect snow guards for slippage or peeling of the tape.

Polycarbonate and/or Metal Snow Guards - Tube Adhesive and/or Tape Mounted:

Inspect each snow guard to insure assembly is intact.

Inspect sealant around the perimeter. Remove and re-apply any areas that are no longer watertight.

Inspect snow guards for slippage or pealing of the tape.

Remove and reinstall these snow guards.

PROTECTION

Protect installed products until completion of project.

Install panels in such a manner that horizontal lines are true and level and vertical lines are plumb.

Remove protective strippable film prior to installation of panels.

Attach panels using manufacturer's fasteners, spaced in accordance with approved shop drawings.

Do not allow panels or trim to come into contact with dissimilar materials.

Remove and replace any panels or components, which are damaged beyond successful repair.

CLEANING

Clean any grease, finger marks or stains from the panels per manufacturer's recommendations.

Touch-up, repair or replace damaged products before Substantial Completion.

SCHEDULES

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END OF SECTION