SECTION 07465

PREFORMED METAL SIDING

PART 1 GENERAL

SECTION INCLUDES

Preformed metal siding system for walls [soffits] [and] [________], with [insulation,] [liners,] related flashings and accessory components.

[Building paper back-up over [wood] sheathed walls.]

RELATED SECTIONS

Section [______-____________]:	Substrate surface.

Section 05120: Structural Steel: Structural steel building frame.

Section 05400 - Cold Formed Metal Framing: Stud wall framing system.

[Section [______-____________]: Building paper back-up.]

Section 07190 - Vapor and Air Barriers.

Section 07213 - Batt and Blanket Insulation.

Section 07270 - Firestopping.

Section 07421 - Composite Metal Building Panels.

Section 07620 - Sheet Metal Flashing and Trim.

Section [______-____________]: Metal [cap] [coping] [________] flashings over panels.

[Section [______-____________]: Soffits.]

Section 08520 - Aluminum Windows.

Section 13121 - Pre-Engineered Buildings: Building framing system.

REFERENCES

ANSI/ASTM A153 - Zinc Coating (Hot-Dip) on Iron and Steel Hardware.

ANSI/ASTM A167 - Stainless and Heat-Resisting Chromium Nickel Steel Plate, Sheet, and Strip.

ANSI/ASTM A446 - Steel Sheet, Zinc-Coated (Galvanized) by the Hot-Dip Process, Structural (Physical) Quality.

ASTM A525 - Steel Sheet, Zinc-Coated (Galvanized) by the Hot-Dip Process, General Requirements.

ASTM A606 - Steel Sheet and Strip, Hot-Rolled and Cold-Rolled, High-Strength, Low-Alloy, with Improved Corrosion Resistance.

ASTM A792 - Steel Sheet, Aluminum-Zinc Alloy Coated by the Hot-Dip Process, Structural (Physical) Quality.

ASTM B209 - Aluminum and Aluminum-Alloy Sheet and Plate.

ASTM C665 - Mineral Fiber Blanket Thermal Insulation for Light Frame Construction and Manufactured Housing.

ASTM D226 - Asphalt-Saturated Roofing Felt for use in Waterproofing and in Constructing Built-Up Roofs.

SYSTEM DESCRIPTION

System: Preformed and pre-finished metal siding system of [horizontal] [and] [vertical] [________] profile; site assembled [; with sub-girt framing assembly].

DESIGN REQUIREMENTS

Design and size components to withstand dead and live loads caused by positive and negative wind pressure acting normal to plane of wall [as calculated in accordance with [________] code] [and] [to a design pressure of [____] lb/sq ft ([____] KPa)].

Maximum Allowable Deflection of Panel: [1/90] [1/180] [____].

System to accommodate, without damage to components or deterioration of seals, movement within system; movement between system and perimeter components when subject to seasonal temperature cycling; dynamic loading and release of loads; deflection of structural support framing.

Accommodate positive drainage for moisture entering or condensation occurring within panel system, to exterior.

Products of this section shall provide continuity of thermal barrier at building enclosure elements [in conjunction with thermal insulating materials in Section [________]].

Products of this section shall provide continuity of vapor and air barrier at building enclosure elements [in conjunction with vapor and air barrier materials in Section [07190] [and] [________]].

SUBMITTALS

Submit under provisions of Section [01300.] [________.]

Shop Drawings: Indicate dimensions, layout, joints, construction details, methods of anchorage [and] [________].

Samples:	Submit [two] [_______] samples of [siding] [siding finish], [____x____] inch ([____x____] mm) in size illustrating finish color, sheen and texture.

QUALIFICATIONS

Manufacturer: Company specializing in manufacturing the products specified in this section with minimum [three] [_______] years [documented] experience.

Installer: Company specializing in performing the Work of this section [with minimum [__________] years [documented] experience.] [approved by manufacturer.]

MOCKUP

Provide mockup of wall [and soffit] system under provisions of Section [01400.] [________.]

Assembly to illustrate component assembly including panel [and glazing] materials, weep drainage system, attachments, anchors and perimeter sealant.

Mockup may [not] remain as part of the Work.

PRE-INSTALLATION CONFERENCE

Convene [one] [_____] week prior to commencing Work of this section, under provisions of Section [01039.] [________.]

DELIVERY, STORAGE, AND HANDLING

Deliver, store, protect and handle products to site under provisions of Section [01600.] [________.]

Protect panels from accelerated weathering by removing or venting sheet plastic shipping wrap.

Stack pre-finished material to prevent twisting, bending, or abrasion, and to provide ventilation. Slope metal sheets to ensure drainage.

Prevent contact with materials which may cause discoloration or staining.

FIELD MEASUREMENTS

Verify that field measurements are as indicated on [shop drawings.] [Drawings.]

****** [OR] ******

Verify that field measurements are as instructed by the manufacturer.

COORDINATION

Coordinate work under provisions of Section [01039.] [________.]

Coordinate the work of Section [07190] [________] for installation of vapor and air barrier seals.

WARRANTY

Provide [ten] [____] year warranty under provisions of Section [01700.] [________.]

Warranty: Include coverage for degradation of panel finish including color fading caused by exposure to weather.

PART 2 PRODUCTS

MANUFACTURERS

[__________________________________] Product [_________].

[__________________________________] Product [_________].

[__________________________________] Product [_________].

Substitutions: Under provisions of Section [01600.] [________.]

EXTERIOR SHEET MATERIALS

Pre-coated Galvanized Steel:	ANSI/ASTM A446, Grade [C] [D] [____], [G90] [____] zinc coating; shop pre-coated with [silicone polyester] [fluorocarbon] [polyvinyl fluoride (PVF)] [________] coating.

****** [OR] ******

Pre-coated Aluminum-Zinc Alloy Coated Steel:	ASTM A792, [Commercial] [Structural] [________] Quality, [AZ150] [AZ180] [AZ210] aluminum-zinc alloy coating; shop pre-coated with [silicone polyester] [fluorocarbon] [polyvinyl fluoride (PVF)] [________] coating.

****** [OR] ******

Pre-coated Aluminum:	ASTM B209, [3105] [____] alloy, [H174] [____] temper; [mill] [plain] [stucco embossed]; [[shop pre-coated with [modified silicone] [______________] coating.] [anodized to [0.0008] [________] inch ([0.02] [____] mm) thick.]

OTHER SHEET MATERIALS

Galvanized Steel: ASTM A446, Grade [C] [D] [____], [G90] [____] zinc coating.

****** [OR] ******

Aluminum-Zinc Alloy Coated Steel: ASTM A792, [Commercial] [Structural] [________] Quality, [AZ150] [AZ180] [AZ210] aluminum-zinc alloy coating.

****** [OR] ******

Aluminum: ASTM B209, [3105] [____] alloy, [H174] [____] temper; [mill] [plain] [________] finish.

ACCESSORIES

Insulation: [Glass fiber type specified in Section 07213;] [[Polyurethane] [Polystyrene] type specified in Section 07212;] [[____] inch ([____] mm) thick.] [thermal resistance R of [____] (RSI of [____]).]

****** [OR] ******

Insulation: [ASTM C665 Type [I] [II] [III] Class [A] [B] [C],] glass fiber blanket; [[____] inch ([____] mm) thick.] [thermal resistance R of [____] (RSI of [____]).]

****** [OR] ******

Insulation: [Polyurethane] [Polystyrene] [________]; [flame/smoke classification of [____/____] in accordance with ASTM E84;] [____] inch ([____] mm) thick.

Gaskets:	Manufacturer's standard type suitable for use with system, permanently resilient; [ultraviolet and ozone resistant;] [________] color [as selected].

Sealants: [Specified in Section 07900] [Manufacturer's standard type suitable for use with installation of system; [non-staining,] [[skinning] [non-skinning],] [non-shrinking] [and] [non-sagging]; [ultra-violet and ozone resistant];] [________] color [as selected].

Fasteners: Manufacturer's standard type to suit application; [with soft neoprene washers,] [steel, hot dip galvanized in accordance with ANSI/ASTM A153] [stainless steel]; fastener cap same color as exterior panel.

Field Touch-up Paint: As recommended by panel manufacturer.

Bituminous Paint: [Asphalt base] [________________].

Building Paper: [Cellulose fiber building paper, water repellent breather type.] [ASTM D226, 15 pound (73 kg/sq m) unperforated asphalt felt.]

COMPONENTS

Exterior Sheet: Minimum [[22] [20] [18] [____] gage ([0.8] [0.9] [1.2] [____] mm) thick pre-coated steel stock] [[0.032] [0.040] [0.050] [____] inch ([0.8] [1] [1.27] [____] mm) thick pre-coated aluminum stock]; [________] profile [as indicated]; [____] inches ([____] mm) wide panel; [interlocking] [lapped] [________] edges, [fitted with continuous gaskets] [filled with sealant].

Liner: Minimum [[22] [20] [18] [____] gage ([0.8] [0.9] [1.2] [____] mm) thick steel stock] [[0.032] [0.040] [0.050] [____] inch ([0.8] [1] [1.27] [____] mm) thick aluminum stock]; [________] profile in [____] inch ([____] mm) wide panels; [interlocking] [lapped] [________] edges, [fitted with continuous gaskets.] [filled with sealant.]

Soffit Panels: [[____] gage ([____] mm) thick pre-coated steel,] [[____] inch ([____] mm) thick pre-coated aluminum alloy,] [________] profile in [____] inch ([____] mm) wide panels; lapped edges [fitted with continuous gaskets.] [filled with sealant.]

Sub Girts: [[____] gage ([____] mm) thick steel,] [[____] inch ([____] mm) thick aluminum alloy,] [________] profile [as indicated]; to attach panel system to [building] structural frame [________].

Internal and External Corners: Same material, thickness and finish as exterior sheets; [________] profile to suit system; [shop cut and factory mitered] [brake formed] to required angles. [Mitered internal corners to be back braced with [[____] gage] [[____] inch] ([____] mm) thick pre-coated sheet stock, to maintain continuity of profile.]

Expansion Joints: Same material, thickness and finish as exterior sheets; [[____] gage] [[____] inch] ([____] mm) thick; [manufacturer's standard brake formed] [infill] [________] type, of profile [to suit system.] [as detailed.] [Exposed fasteners same finish as panel system.]

Trim, Closure Pieces, Caps, Flashings, [Facias] [Infills], [and] [________]: Same material, thickness and finish as exterior sheets; brake formed to required profiles.

Anchors:	[Galvanized steel.] [Aluminum.] [Stainless steel.]

FABRICATION

Form sections true to shape, accurate in size, square, and free from distortion or defects.

Form pieces in longest practical lengths.

Form panels for [standing] [batten] [________] seams.

****** [OR] ******

Panel Profile:	[________].

Fabricate corners in one continuous piece with minimum [18] [____] inch ([450] [____] mm) returns and seal.

FINISH

Exposed Exterior Surfaces: [________] color [as selected] [from manufacturer's standard range].

Exposed Interior Surfaces: [________] color [as selected] [from manufacturer's standard range].

PART 3 EXECUTION

EXAMINATION

Verify substrate framing under provisions of Section [01039.] [________.]

Verify that [building] framing members are ready to receive panel system.

INSTALLATION - BUILDING PAPER

Install [1] [2] layers building paper horizontally on walls to receive metal siding.

Weather lap edges [6] [____] inches ([150] [____] mm) and ends minimum [6] [____] inches ([150] [____] mm), minimum.

Stagger vertical joints of each layer.

Securely [staple] [nail] [________] in place.

INSTALLATION

Install metal siding system on walls [and soffits] in accordance with manufacturer's instructions.

Protect surfaces in contact with [cementitious materials] [and] [dissimilar metals] with bituminous paint. Allow to dry prior to installation.

Fasten siding to structural supports; aligned, level, and plumb.

Locate joints over supports.	[End lap minimum [2] [____] inches ([50] [____] mm).]

Provide [expansion] [control] joints where indicated.

Use concealed fasteners unless otherwise approved by Architect/Engineer.

Seal and place gaskets to prevent weather penetration. Maintain neat appearance.

TOLERANCES

Maximum Offset From True Alignment Between Adjacent Members Butting or In Line: [1/16] [____] inch ([1.6] [____] mm).

Maximum Variation from Plane or Location Indicated on Drawings: [1/4] [1/8] [____] inch ([3] [6] [____] mm).

CLEANING

Clean work under provisions of [01700.] [________.]

Remove site cuttings from finish surfaces.

Clean and wash pre-finished surfaces with mild soap and water, rinse with clean water.

SCHEDULES

Front Entry Elevation: Box profile, aluminum anodized clear color, 24 inch wide panels.

All Other Elevations: Ribbed profile, Red pre-coated color, 18 inch wide panels.

END OF SECTION