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| | SECTION 07729 |
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| | SNOW GUARDS |
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| | Copyright 2006 - 2009 ARCAT, Inc. - All rights reserved
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| | ** NOTE TO SPECIFIER ** Berger Building Products, Inc.; Snow guards and snow rail products. .
This section is based on the products of Berger Building Products, Inc., which is located at:
805 Pennsylvania Blvd.
Feasterville, PA 19053
Toll Free Tel: 800-523-8852
Tel: 215-355-1200
Fax: 215-355-7738
Email: request info
Web: www.bergerbuildingproducts.com
[ Click Here ] for additional information.
For over 125 years, Berger Building Products has been manufacturing the finest roof drainage products available. Snow Guards are designed for personal and property protection while enhancing the beauty of your home or building design. . With a design tradition going back to 1874, Berger Building Products offers the most extensive selection of snow guards for virtually any type of roof. Berger Building Products Snow Guards are designed to prevent a mass quantity of snow or ice from avalanching all at once off the roof, causing extensive damage to property and pedestrians below. Snow guards are available in aluminum, bronze, clear polycarbonate, and in a wide variety of stamped patterns and ornamental castings and offer the perfect fit to any residential or commercial application. |
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| | PART 1 | GENERAL |
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| | 1.1 | SECTION INCLUDES |
| | ** NOTE TO SPECIFIER ** Delete items below not required for project. |
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| | | A. | Snow guards on standing seam metal roofs. |
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| | | B. | Snow guards on metal roofs. |
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| | | C. | Snow guards on metal roof panels. |
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| | | D. | Snow rail for standing seam metal roofs. |
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| | 1.2 | RELATED SECTIONS |
| | ** NOTE TO SPECIFIER ** Delete any sections below not relevant to this project; add others as required. |
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| | | A. | Section 07410 - Metal Roof Panels. |
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| | | B. | Section 07610 - Sheet Metal Roofing. |
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| | 1.3 | REFERENCES |
| | ** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section. |
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| | | A. | ASTM D 638 - Standard Test Method for Tensile Properties of Plastics; 2002. |
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| | | B. | ASTM D256 - Standard Test Method for Determining the Izod Pendulum Impact Resistance of Plastics, 2000. |
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| | | C. | ASTM D 1238 - Standard Test Method for Melt Flow Rates for Thermoplastics by Extrusion Plastometer, 2001. |
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| | 1.4 | SUBMITTALS |
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| | | A. | Submit under provisions of Section 01300. |
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| | | B. | [ [ Product Data ] ]: Manufacturer's data sheets on each product to be used, including: |
| | | | 1. | Preparation instructions and recommendations. |
| | | | 2. | Storage and handling requirements and recommendations. |
| | | | 3. | Installation methods. |
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| | | C. | Shop Drawings: Snow guard placement layout for pitch and run of roof as required to retain snow in place. |
| | ** NOTE TO SPECIFIER ** Delete selection samples if colors are specified or if custom colors are not used. |
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| | | D. | Color Selection Samples: For each application specified, two complete sets of color chips representing manufacturer's full range of available colors. |
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| | 1.5 | DELIVERY, STORAGE, AND HANDLING |
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| | | A. | Store products in manufacturer's unopened packaging until ready for installation. |
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| | | B. | Store and dispose of solvent-based materials, and materials used with solvent-based materials, in accordance with requirements of local authorities having jurisdiction. |
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| | 1.6 | PROJECT CONDITIONS |
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| | | A. | 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. |
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| | PART 2 | PRODUCTS |
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| | 2.1 | MANUFACTURERS |
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| | | A. | Acceptable Manufacturer: Berger Building Products, Inc., which is located at: 805 Pennsylvania Blvd. ; Feasterville, PA 19053; Toll Free Tel: 800-523-8852; Tel: 215-355-1200; Email: request info; Web: www.bergerbuildingproducts.com |
| | ** NOTE TO SPECIFIER ** Delete one of the following two paragraphs; coordinate with requirements of Division 1 section on product options and substitutions. |
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| | | B. | Substitutions: Not permitted. |
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| | | C. | Requests for substitutions will be considered in accordance with provisions of Section 01600. |
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| | 2.2 | MATERIALS |
| | ** NOTE TO SPECIFIER ** Delete all but one snow guard type for each relevant application. Select product based upon application and roofing system used. Do not use aluminum snow guards on copper roofing materials or bronze snow guards on aluminum because galvanic corrosion will occur when dissimilar metals are in contact.
** NOTE TO SPECIFIER ** AP 400 Snow Guard is designed to accommodate a seam of up to 3/8 inch thick and at least 1-1/2 inch high, including snap-lock interlocking panels. |
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| | | A. | Snow Guards for Seam Mounting: Cast aluminum; Real Tool AP 400 Snow Guard; non-penetrating attachment to standing seams of up to 3/8 inch (9.53 mm) thick and minimum 1-1/2 inch (38.1 mm) high; ALMAG 35 aluminum casting; 0.700 pounds (0.3175 kg) per piece. |
| | ** NOTE TO SPECIFIER ** AP 516 Snow Guard is designed to accommodate a seam of up to 1/2 inch thick and at least 1-1/2 inch high, including snap-lock interlocking panels. |
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| | | B. | Snow Guards for Seam Mounting: Cast aluminum; Real Tool AP 516 Snow Guard; non-penetrating attachment to standing seams of up to 1/2 inch (12.7 mm) thick and minimum 1-1/2 inch (38.1 mm) high; ALMAG 35 aluminum casting; 0.860 pounds (0.39 kg) per piece. |
| | ** NOTE TO SPECIFIER ** RT 200 Snow Guard is designed to accommodate a seam of up to 3/16 inch thick and suited for use with light gauge sheet metals such as 40 pound terne and 26 gauge galvanized roofs. |
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| | | C. | Snow Guards for Seam Mounting: Cast aluminum; Real Tool RT 200 Snow Guard; non-penetrating attachment to standing seams of up to 3/16 inch (4.76 mm); ALMAG 35 aluminum casting; 0.300 pounds (0.1361 kg) per piece. |
| | ** NOTE TO SPECIFIER ** RT 300 Snow Guard is designed to accommodate a seam of up to 9/32 inch thick and suited for use with heavy gauge sheet metals such as 20 ounce copper, 24 gauge prefinished metal and products of similar thickness. |
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| | | D. | Snow Guards for Seam Mounting: Cast aluminum; Real Tool RT 300 Snow Guard; non-penetrating attachment to standing seams of up to 9/32 inch (7.144 mm); ALMAG 35 aluminum casting; 0.290 pounds (0.1315 kg) per piece. |
| | ** NOTE TO SPECIFIER ** RT 200 Snow Guard is designed to accommodate a seam of up to 3/16 inch thick and suited for use with light gauge sheet metals such as 40 pound terne, 26 gauge galvanized, and 16 ounce copper, lead coated copper and TCS roofs. |
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| | | E. | Snow Guards for Seam Mounting: Cast bronze; Real Tool RT 200 Snow Guard; non-penetrating attachment to standing seams of up to 3/16 inch (4.76 mm); 0.600 pounds (0.2722 kg) per piece. |
| | ** NOTE TO SPECIFIER ** RT 300 Snow Guard is designed to accommodate a seam of up to 9/32 inch thick and suited for use with heavy gauge sheet metals such as 20 ounce copper, 24 gauge prefinished metal and products of similar thickness. |
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| | | F. | Snow Guards for Seam Mounting: Cast bronze; Real Tool RT 300 Snow Guard; non-penetrating attachment to standing seams of up to 9/32 inch (7.144 mm); 0.620 pounds (0.2812 kg) per piece. |
| | ** NOTE TO SPECIFIER ** Berger Rail Systems are designed to accommodate a seam of up to 1/2 inch thick and at least 1-1/4 inch high, including snap-lock interlocking panels. |
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| | | G. | Snow Rail for Seam Mounting: Cast aluminum; F-Casting, non-penetrating attachment to standing seams of up to 1/2 inch (12.7 mm) thick and minimum 1-1/2 inch (38.1 mm) high. ALMAG 35 aluminum casting; 1.02 pounds (0. 0.46 kg) per piece. 535 Alloy ASTM B26 QQ-A-601E, 40,000 PSI Ultimate Tensile Strength, 20,000 PSI Yield Strength. |
| | | | 1. | Tubing: tubing is available in Stainless (TBSS20) and Custom Color (TBCR24P). TBSS20 is stainless steel square tubing 1 inch (25 mm) by 1 inch (25 mm) by 20 feet (6.5 m) 16 GA, ASTM A554, type 304. Ultimate tensile strength is 74,000 PSI and yield strength is 29,000 PSI. TBCR24P is hot rolled square tubing, 1 inch (25 mm) by 1 inch (25 mm) by 24 feet (7.5 m) 16 GA, ASTM A516. Ultimate tensile strength is 60,000 PSI and yield strength is 40,000 PSI. |
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| | | H. | Snow Rail for Seam Mounting: Cast aluminum; E-Casting, non-penetrating attachment to standing seams of up to 1/2 inch (12.7 mm) thick and minimum 1-1/2 inch (38.1 mm) high; ALMAG 35 aluminum casting; 0.56 pounds (0.25 kg) per piece. 535 Alloy ASTM B26 QQ-A-601E, 40,000 PSI Ultimate Tensile Strength, 20,000 PSI Yield Strength. |
| | | | 1. | Tubing: tubing is available in Stainless (TBSS20) and Custom Color (TBCR24P). TBSS20 is stainless steel square tubing 1 inch (25 mm) by 1 inch (25 mm) by 20 feet (6.5 m) 16 GA, ASTM A554, type 304. Ultimate tensile strength is 74,000 PSI and yield strength is 29,000 PSI. TBCR24P is hot rolled square tubing, 1 inch (25 mm) by 1 inch (25 mm) by 24 feet (7.5 m) 16 GA, ASTM A516. Ultimate tensile strength is 60,000 PSI and yield strength is 40,000 PSI. |
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| | | I. | Snow Rail for Seam Mounting: Cast aluminum; S-Casting, non-penetrating attachment to standing seams of up to 1/2 inch (12.7 mm) thick and minimum 1-1/2 inch (38.1 mm) high; ALMAG 35 aluminum casting; 0.56 pounds (0.25 kg) per piece. 535 Alloy ASTMB26 QQ-A-601E, 40,000 PSI Ultimate Tensile Strength, 20,000 PSI Yield Strength. |
| | | | 1. | Tubing: tubing is available in Stainless (TBSS20) and Custom Color (TBCR24P). TBSS20 is stainless steel square tubing 1 inch (25 mm) by 1 inch (25 mm) by 20 feet (6.5 m) 16 GA, ASTM A554, type 304. Ultimate tensile strength is 74,000 PSI and yield strength is 29,000 PSI. TBCR24P is hot rolled square tubing, 1 inch (25 mm) by 1 inch (25 mm) by 24 feet (7.5 m) 16 GA, ASTM A516. Ultimate tensile strength is 60,000 PSI and yield strength is 40,000 PSI. |
| | ** NOTE TO SPECIFIER ** SM Snow Guard is designed to be adhered to the pan surface of prefinished metal roofs where there are no suitable seams to fasten a seam mounted device. Can be used in conjunction with the RT 300 Snow Guards. |
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| | | J. | Snow Guards for Surface Mounting: Cast aluminum; Real Tool SM Snow Guard; adhesive or mechanical and adhesive attachment to the pan surface of prefinished metal roof panels; ALMAG 35 aluminum casting; 0.300 pounds (0.1361 kg) per piece. |
| | ** NOTE TO SPECIFIER ** RTMINI Snow Guard is designed to attach to the flat metal panel surface using adhesive or mechanical attachment. |
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| | | K. | Snow Guards for Surface Mounting: Polycarbonate; Real Tool RTMINI Clear Plastic Snow Guards for adhesive or mechanical attachment to flat metal panel surfaces and to fit parapet ribbed roof channels; 1-1/2 inches (38.1 mm) with a 2:1 base-to-blade ratio; 4-1/2 square inch (2903 sq.mm.) holding area and gusseted blade snow pocket for snow retention, clear polycarbonate plastic with UV stabilizers; 0.275 pounds (0.1247 kg) per piece: |
| | | | 1. | Base: Ribbed perimeter for longitudinal reinforcement, with 3 cored screw holes for mechanical attachment. |
| | | | 2. | Blades: Radius corners, with forward position to resist torsional loads |
| | ** NOTE TO SPECIFIER ** RTCLSM Snow Guard is designed to attach to the flat metal panel surface using adhesive or mechanical attachment. |
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| | | L. | Snow Guards for Surface Mounting: Polycarbonate; Real Tool RTCLSM Clear Plastic Snow Guards for adhesive or mechanical attachment to flat metal panel surfaces; 3-1/2 inches (88.9 mm) by 6 inches (152.4 mm) by 2-1/2 inches (63.5 mm) high; clear polycarbonate plastic with UV stabilizers; 0.275 pounds (0.1247 kg) per piece; meeting the following criteria: |
| | | | 1. | Tensile Strength: 730 kg/sq cm, when tested in accordance with ASTM D 638. |
| | | | 2. | Tensile Elongation: 140 percent, when tested in accordance with ASTM D 638. |
| | | | 3. | Impact Strength: 90 Kg.cm/cm, when tested in accordance with ASTM D 256. |
| | | | 4. | Melt Flow Rate: ASTM D1238, 11.2 g/10 minutes, when tested in accordance with ASTM D 1238 under conditions of 300 degrees C by 1.2 kg. |
| | ** NOTE TO SPECIFIER ** RTCLSR Snow Guard is designed to mount over a structural rib no greater than 3/16 inch high and 1-3/4 inch wide using adhesive or mechanical attachment. |
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| | | M. | Snow Guards for Surface Mounting Over Structural Rib: Polycarbonate; Real Tool RTCLSR Clear Plastic Snow Guards for adhesive or mechanical mounting over a structural rib no greater than 3/16 inch (4.76 mm) high and 1-3/4 inch (44.45 mm) wide; 3-1/2 inches (88.9 mm) by 6 inches (152.4 mm) by 2-1/2 inches (63.5 mm) high; clear polycarbonate plastic with UV stabilizers; 0.275 pounds (0.1247 kg) per piece; meeting the following criteria: |
| | | | 1. | Tensile Strength: 730 kg/sq cm, when tested in accordance with ASTM D 638. |
| | | | 2. | Tensile Elongation: 140 percent, when tested in accordance with ASTM D 638. |
| | | | 3. | Impact Strength: 90 Kg.cm/cm, when tested in accordance with ASTM D 256. |
| | | | 4. | Melt Flow Rate: ASTM D1238, 11.2 g/10 minutes, when tested in accordance with ASTM D 1238 under conditions of 300 degrees C by 1.2 kg. |
| | ** NOTE TO SPECIFIER ** Delete all but one of the following three metal finishes. Delete all three if only polycarbonate snow guards are specified. |
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| | | N. | Metal Finish: Natural finish of casting. |
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| | | O. | Metal Finish: E-Coat Primer; the CED epoxy primer, black color with extended shelf life, suitable for coating with a wet or dry paint system. Top coat prior to installation. |
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| | | P. | Metal Finish: Black powder coating with UV stablizers; requiring no additional coating. |
| | ** NOTE TO SPECIFIER ** Delete if custom colors are not required for the project. |
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| | | Q. | Metal Finish: Custom color polyurethane enamel, Imron 326 by Dupont, over primer; color as selected. |
| | ** NOTE TO SPECIFIER ** Delete types of fasteners that are not required. |
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| | | R. | Fasteners for Metal Seam Mounted Units: Stainless steel set-screws with hex bit heads. |
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| | | S. | Fasteners for Surface Mounted Units: Self-tapping screws with neoprene washers; stainless steel or corrosion resistant metal. Use in conjunction with adhesive mounting method. |
| | ** NOTE TO SPECIFIER ** Use the following paragraph if roofing products are copper-based materials. |
| | | | 1. | On copper based roofing materials use only copper, brass or stainless steel fasteners; do not use aluminum or galvanized fasteners. |
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| | | T. | Sealant and Adhesive: SureBond SB-190 Everseal Sealant Caulk. |
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| | | U. | Tape: Acrylic, 2-sided foam type tape for low load requirements. |
| | | | 1. | Acceptable Product: 3M VHB Tape. |
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| | PART 3 | EXECUTION |
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| | 3.1 | EXAMINATION |
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| | | A. | Do not begin installation until the metal roofing system has been completely installed. |
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| | | B. | If metal roof system installation is the responsibility of another installer, notify Architect of unsatisfactory conditions before proceeding. |
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| | 3.2 | PREPARATION |
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| | | A. | Adhesive Mounted Units: Clean all contact surfaces thoroughly with isopropyl alcohol prior to installation. |
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| | | B. | Prepare surfaces using the methods recommended by the manufacturer for achieving the best result for the roofing system installed under the project conditions. |
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| | 3.3 | INSTALLATION |
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| | | A. | Seam Mounting: Place snow guard over roof panel seams in the approved layout pattern. Tighten set-screws with hex bit sockets and 3/8 inch (9.5 mm) drive ratchet until fully engaged. |
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| | | B. | Surface Mounting, Adhesive Attachment: Place snow guards in approved layout pattern. Apply sealant to cover the surface of the unit to be in contact with the roof. After positioning unit on roof surface, apply compression sufficient to squeeze the sealant out around the perimeter of unit base. Point up joint around perimeter of unit base with a bead of sealant as required creating a waterproof joint, free of gaps or air pockets. |
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| | | C. | Surface Mounted, Mechanical Attachment: Pre-drill holes in base of unit before placing in approved layout pattern. Install as specified for adhesive attachment, screw self-tapping screw fasteners with a neoprene washer through the predrilled holes into the surface of the roof panels. Seal fastener heads and base perimeter with sealant. |
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| | | D. | Tape Mounting: Completely apply tape to underside surface of the unit to be in contact with the roof. Compress tape to eliminate air pockets. Position unit on roof and press against roof surface until entire unit surface makes full contact with no gaps. Maintain minimum of 50 degrees F (10 degrees C) for 72 consecutive hours for proper bond curing. |
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| | 3.4 | PROTECTION |
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| | | A. | Protect installed products until completion of project. |
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| | | B. | Touch-up, repair or replace damaged products before Substantial Completion. |
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| | END OF SECTION |