(Specifier Note: The purpose of this guide specification is to assist the specifier in correctly specifying seamless sheet metal gutter and downspout products and execution.
The specifier needs to edit the guide specifications to fit the needs of specific projects.
Contact Garrety Manufacturing to assist in appropriate product selections. Throughout
the guide specification, there are Specifier Notes to assist in the editing of the file.
Specifier Notes should be deleted after editing has been completed.
References have been made within the text of the specification to MasterFormat Section numbers and titles, specifier needs to coordinate these numbers and titles with sections included for the specific project. Brackets [ ]; “AND”; and “OR” have been used
to indicate when a selection is required.
Garrety Manufacturing, Inc. currently provides seamless gutter products in the states of
Pennsylvania, New York, New Jersey and Delaware. Gutter and downspout products
can be shipped throughout the United States; product length is limited based on method of shipping. Contact Garrety Manufacturing, Inc. to confirm shipping availability.
SECTION 07 62 13
SHEET METAL GUTTERS AND DOWNSPOUTS
Gutters and Downspouts by Garrety Manufacturing, Inc.
PART 1 - GENERAL
1.1
SECTION INCLUDES
A.
Gutters and downspouts
B.
Accessories
(Specifier Note: COORDINATE References Article and delete reference standards that
are deleted in the body of the spec during editing.)
1.2
A.
REFERENCES
American Society for Testing and Materials (ASTM):
1.
2.
3.
4.
ASTM A653:
Standard Specification for Steel Sheet, Zinc Coated
(Galvanized) or Zinc Iron Alloy Coated (Galvannealed by the Hot Dip
Process.
ASTM A792: Standard Specification for Steel Sheet, 55 percent Aluminum
Zinc Alloy Coated by the Hot Dip Process.
ASTM A924: Standard Specification for General Requirements for Steel
Sheet, Metallic Coated by the Hot Dip Process.
ASTM B370: Standard Specification for Copper Sheet and Strip for Building
Construction.
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B.
Leadership in Energy and Environmental Design (LEED)
C.
National Green Building System (NGBS)
1.3
SUBMITTALS
(Specifier Note: DELETE Submittal Procedures paragraph when not required. Coordinate
requirements with Division 01, Section 01 33 00 – Submittal Procedures.)
A.
Refer to Section [01 33 00 Submittal Procedures] [insert section number and
title].
B.
Product Data: Submit manufacturer current technical literature for each type
of product.
C.
Samples: Provide nominal 3 x 5 inch sample of each color indicated for gutters,
downspouts and accessories.
(Specifier Note: DELETE LEED submittal requirements when project is not pursuing LEED
certification. LEED for Homes is 2009 version; LEED-NC v2.2 credits are in red LEED-NC v3
credits are in red bold.)
D.
LEED Submittals:
1.
LEED for Homes, Material and Resources (MR):
a.
2.
Credit MR 2.2: Product Certificates for Environmentally Preferable
Products having recycled content, documentation indicating
percentages by weight of postconsumer and pre-consumer
recycled content.
LEED for New Construction, Materials and Resources (MR):
a.
b.
Product Certificates for Credit [MR 4] [MR 4.1[and Credit MR 4.2]]: For
products having recycled content, documentation indicating
percentages by weight of postconsumer and preconsumer recycled
content.
Product Certificates for Credit [MR 5] [MR 5.1[and Credit MR 5.2]]:
For products and materials required to comply with requirements for
regionally manufactured materials. Include statement indicating
cost, location of manufacturer, and distance to Project for each
regionally manufactured material.
(Specifier Note: DELETE NGBS submittal requirements when project is not a residential
project or project is not pursuing National Association of Home Builders certification.
Credits are for NGBS for New Construction version 2008.)
A.
NGBS Submittals:
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Garrety Manufacturing, Inc
1.
Practice 601 – Quality of Construction Materials and Waste
a.
2.
Practice 601.7: Provide a list of building materials that do not
require additional site applied finishes. Include manufacturer’s
product literature showing type of finish applied to building
materials.
Practice 604 – Recycled-Content Building Materials
(Specifier Note: Recycled content of products must contain a minimum of 25 percent
recycled content when pursuing Practice 604.1.)
a.
(Specifier Note:
Practice 608.1.)
3.
Practice 608 – Indigenous Materials
Practice
608.1:
Provide
documentation indicating
manufacturing location of indigenous materials that are
extracted, processed, and manufactured within 500 miles of
project site.
Practice 1001 – Building Owners’ Manual for One- and Two-Family
Dwellings
a.
1.4
indicating
Verify location of Garrety Manufacturing facility when pursuing
a.
4.
Practice
604.1:
Provide
documentation
percentages, by weight, of recycled content.
Practice 1001.1(20): Provide documentation indicating how to
maintain and care for material.
QUALITY ASSURANCE
A.
Manufacturer Qualifications: Manufacturer shall have a minimum of five (5)
years experience in the production of sheet metal gutters and downspouts.
B.
Fabricator Qualifications: Shall be approved by manufacturer for fabrication of
gutters and downspouts.
1.5
DELIVERY, STORAGE AND HANDLING
(Specifier Note: DELETE Product Requirement paragraph when not required. Coordinate
requirements with Division 01, Section 01 60 00 – Product Requirements.)
A.
Refer to Section [01 60 00 Product Requirements] [insert section number and
title].
B.
Store materials on dry, level, firm, and clean surface.
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1.6
WARRANTY
(Specifier Note: 20 year warranty is only for Kynar Coatings, no warranty for silicone
modified polyester coating, galvanized, galvalume or aluminum mill finishes.)
A.
Finish Warranty:
1.
2.
Manufacturing Defects: Standard form in which manufacturer agrees to
repair or replace items that fail by blistering, checks, crazes, flakes, peels or
weathers unevenly due to a defect in manufacturing within warranty
period from date of original installation.
Warranty Period: 20 years.
PART 2 - PRODUCTS
(Specifier Note: Garrety Manufacturing, Inc. currently provides seamless gutter
products in the states of Pennsylvania, New York, New Jersey and Delaware. Gutter
and downspout products can be shipped throughout the United States; product length
is limited based on method of shipping. Contact Garrety Manufacturing, Inc. to
confirm shipping availability.)
2.1
A.
MANUFACTURER
Garrety Manufacturing, Inc. (800-628-5849) (www.garretymfg.com).
(Specifier Note: DELETE or COORDINATE Substitution Limitations paragraph if
substitutions, are addressed in Section 01 25 00 – Substitution Procedures.)
B.
[OR]
Substitutions:
1.
[Not Permitted.]
2.
[Requests for substitutions will be considered in accordance with provisions
of [Section 01 60 00 – Product Requirements] [insert section number and
title].]
(Specifier Note: It is the Design Professional’s responsibility to verify gutter and
downspouts are sized in accordance with local building codes for rainfall intensities
based on project specific roof areas.)
2.2
A.
GUTTERS
Materials:
1.
Aluminum Coil Stock: Formed and coated aluminum coil stock; 3105 H24
aluminum.
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Garrety Manufacturing, Inc
(Specifier Note: Aluminum-Zinc Alloy Coated Steel is standard; G90 galvanized steel is
used when Galvanized Steel is selected as the exposed gutter finish.)
[OR]
2.
Steel Coil Stock: [Aluminum-Zinc Alloy-Coated Steel Sheet: ASTM A792,
Class AZ50 coating designation] [G90 galvanized steel in accordance with
ASTM A653 and A924].
3.
Copper Coil Stock: Sheet stock meeting ASTM B370, cold-rolled, H00 or H01
temper.
[OR]
(Specifier Note: Select appropriate profile and size to meet project requirements.)
B.
Box Gutter Fabrication [, with roof flange]:
1.
2.
Gutter Size: 7 inches.
Length: Continuous.
(Specifier Note: 0.050 aluminum thickness only available in box gutter without roof
flange.)
3.
[Aluminum Thickness: [0.032] [0.040] [0.050] inch.]
4.
[Steel Thickness: [0.028 (24 gauge)] [0.034 (22 gauge)] inch.]
5.
[Copper Weight: [20] [16] ounce per square foot.]
[OR]
[OR]
(Specifier Note: DELETE roof flange length if Box Gutter with roof flange is not profile
selected.)
6.
C.
[Roof Flange Length: 4 inches wide.]
K-Style Gutter Fabrication:
1.
2.
3.
Gutter Size: [5] [6] inches.
Length: Continuous.
[Aluminum Thickness: [0.032] [0.040] inch.]
4.
[Steel Thickness: 0.028 (24 gauge)]
[OR]
[OR]
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5.
D.
[Copper Weight: [20] [16] ounce per square foot.]
Half-Round Gutter Fabrication:
1.
2.
Gutter Size: [5] [6] [7] [8] [9] inches.
Length: 10 feet.
(Specifier Note: 5 inch half round gutter size is not available in 0.050 inch thick
aluminum.)
3.
[Aluminum Thickness: [0.032] [0.040] [0.050] inch.]
4.
[Steel Thickness: [0.019 (28 gauge)] [0.028 (24 gauge)] [0.034 (22 gauge)]
inch.]
5.
[Copper Weight: [24] [20] [16] ounce per square foot.]
[OR]
[OR]
(Specifier Note: COORDINATE; Steel and aluminum gutter corners are typically lapped,
sealed and riveted. Option for steel and aluminum gutter corners can be welded.
Only copper gutter corners are soldered.)
E.
Gutter Corner Fabrication:
(Specifier Note: Welded corners are not available in Half-Round Gutters.)
1.
2.
2.3
A.
Provide mitered corners, [lapped, sealed and riveted] [welded and sealed]
[soldered]. Corners shall extend a minimum of 12 inches from the corner in
each direction. Lap joint and sealant where connecting to continuous
gutter.
Match material, shape and finish of gutter.
DOWNSPOUTS
Rectangular downspout fabrication:
1.
2.
3.
4.
Size: [3 by 4 inches] [4 by 5 inches].
Length: [Standard 10 foot length] [Custom length].
Texture: Corrugated.
Material thickness:
(Specifier Note: COORDINATE; 3 by 4 inch aluminum downspout not available in 0.025
inch thick material.)
a.
[Aluminum Thickness: [0.025] [0.032] [0.040] inch.]
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[OR]
b.
[Steel Thickness: [0.019 (28 gauge)] [0.022 (26 gauge)] [0.028 (24
gauge)] [0.034 (22 gauge)] inch.]
c.
[Stainless Steel Thickness:
inch.]
d.
[Copper Weight: [20] [16] ounce per square foot.]
[OR]
[0.016 (28 gauge)] [0.019 (26 gauge)]
[OR]
B.
Round downspout fabrication:
1.
2.
3.
Size: [3] [4] [5] [6] [7] [8] inch diameter.
Length: 10 feet.
Texture: Smooth.
(Specifier Note: 3 and 4 inch diameter aluminum downspouts not available in 0.050
inch thick material.)
4.
[Aluminum Thickness: [0.032] [0.040] [0.050] inch.]
[OR]
(Specifier Note: 3 and 4 inch diameter steel downspouts not available in 0.034 inch
thick material.)
5.
[Steel Thickness: [0.028 (24 gauge)] [0.034 (22 gauge)] inch.]
6.
[Copper Weight: [24] [20] [16] ounce per square foot.]
[OR]
2.4
A.
ACCESSORIES
Gutters:
1.
2.
3.
End Caps: Match material, shape and finish of gutter.
Outlet Tubes: Match material and shape of downspout.
Gutter Support:
a.
Hidden Gutter Hanger: Manufacturer’s standard [steel] [aluminum]
[stainless steel] hidden hanger.
[OR]
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Garrety Manufacturing, Inc
(Specifier Note: Gutter Fascia Hanger is only used with Box Gutters and is used in
addition to the hidden hanger.)
b.
Gutter Fascia Hanger:
Manufacturer’s standard steel bracket
wrapped in metal to match gutters.
[OR]
(Specifier Note: Rod and Nut Hanger is only used with the K-Style Gutters.)
c.
B.
Downspouts:
1.
Downspout Support:
a.
b.
2.
C.
Rod and Nut Hanger: Manufacturer’s standard aluminum hanger,
gutter spacer and nuts.
Exposed strap.
Color: [As selected from manufacturer’s full color line] [Insert Color
selection] [Match Downspout] [As indicated on Drawings].
Miscellaneous downspout components: Provide all necessary elbows,
downspout offset sections, and pop rivets as required for a complete
installation. All miscellaneous components shall match downspouts.
Fasteners:
1.
[Galvanized steel] [Aluminum] [Stainless steel] fasteners of sufficient length
to penetrate minimum 1 inch into substrate.
(Specifier Note: COORDINATE; when flashing associated with gutters is provided in this
guide spec list material thickness and make color selection as indicated below, if
flashing is to be provided under another section select second option and indicate
section number and name where flashing is located.)
D.
Flashing: Provide [insert material thickness] [0.032 inch thick aluminum] [0.022
inch thick steel] [16 ounce per square foot copper] roof edge flashing; color [to
match gutters] [shall be [insert color]] [As selected from manufacturer’s full
color line]
[OR]
E.
Flashing: Provide flashing complying with Section [07 62 00 Sheet Metal Flashing
and Trim] [insert section number and title] at roof apron, fascia apron, and
where indicated.
F.
Sealants:
Tripolymer, single component sealant as recommended by
manufacturer at gutter joints.
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G.
Downspout Strainer: [Aluminum] [Steel] [Copper] wire-ball downspout strainer.
H.
Splash Pans: Fabricate from the following. Size and shape as indicated on
Drawings.
1.
Copper: [16 ounce per square foot] [insert weight]
2.
Aluminum: [0.040 inch] [insert thickness] thick.
3.
Stainless Steel: [0.019 inch] [insert thickness] thick.
4.
Pre-cast Concrete: Profile as selected by Architect. Concrete shall be
3,000 psi at 28 days with minimum of 5 percent air entrainment.
[OR]
[OR]
[OR]
2.5
A.
FINISH
Exterior Coating:
1.
Standard Coating; Kynar 500 or Hylar 5000 applied to exposed side.
2.
Silicone Modified Polyester (SMP) Coating:
applied to exposed side.
3.
Color: [As selected from manufacturer’s standard color line] [As selected
from manufacturer’s premium color line] [Insert Color selection] [As
indicated on Drawings].
[OR]
Silicone modified polyester;
[AND]
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B.
Interior coating: Manufacturer’s standard primer wash coat.
(Specifier Note: Exterior/Interior finishes are optional exposed finishes for gutters and
downspouts.)
C.
Exterior/Interior Finish: [Galvanized steel] [Galvalume steel] [Mill finish aluminum]
[Natural Copper].
PART 3 - EXECUTION
3.1
A.
PREPARATION
Verify that substrates are in place and ready for installation of gutters and
downspouts.
(Specifier Note: EDIT installation article deleting specific installation paragraphs not
used on Project.)
3.2
A.
INSTALLATION
General: Install Work securely in place and provide for expansion and
contraction of components using lapped and sealed joints
1.
2.
3.
4.
5.
Do not install damaged components.
Separate dissimilar metals to prevent galvanic action through the use of
bituminous coating or other permanent separation recommended by
SMACNA.
Space expansion joints in gutters [at a maximum of 70 foot centers] [as
recommended by manufacturer].
Rivet joints where required for strength, exposed rivet shall match gutter or
downspout color.
Torch cutting of components is not allowed.
(Specifier Note: DELETE roof edge flashing paragraph if flashings are provided under
the roofing section.)
B.
Install roof edge flashings at roof edge conditions as indicated on Drawings.
C.
Gutters:
1.
2.
3.
Install gutter supports at no more than [24 inches] [insert spacing] on
center.
Slope gutters evenly to downspouts; provide end caps at gutter ends and
seal watertight per manufacturer’s instructions.
Install outlet tubes at all downspout locations, seal watertight.
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4.
D.
Apply joint sealants at gutter joints per manufacturer’s installation
instructions and to meet the requirements of Section [07 92 00 – Joint
Sealants] [Insert section number and title].
Downspouts:
1.
2.
Install downspouts, provide elbows and offsets, and secure downspouts to
wall construction using downspout supports spaced no more than [10 feet]
[insert spacing] on center. Maximum distance of downspout support from
top or bottom of downspout shall be 2 feet. Provide 45 degree elbow at
bottom of downspout to direct water away from wall surface or
foundation.
Where downspout connects to building perimeter drainage system, lap
downspout and perimeter drainage pipe a minimum of 3 inches.
(Specifier Note: Install splash pans under downspouts draining onto other roof surfaces.)
3.
3.3
Install [formed metal] [pre-cast concrete] splash pans under downspouts.
CLEANING AND PROTECTION
A.
Remove damaged, defective or improperly installed materials. Replace with
new materials installed per requirements of this section.
B.
Clean finished surfaces according to manufacturer’s written instructions;
maintain clean condition until Final Completion.
END OF SECTION
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