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	SECTION 08520
	ALUMINUM WINDOWS
	** NOTE TO SPECIFIER ** St. Cloud Window, Inc.; double hung, horizontal rolling, and fixed aluminum windows. . This section is based on the products of St. Cloud Window, 1nc., which is located at:
	P.O. Box 1577 St. Cloud, MN 56302-1577 Tel: (320) 251-9311 Te1: (800) 383-9311 Fax: (320) 255-1513 Email: info@stcloudwindow.com [ Click Here ] for additional information.
	St. Cloud Window Inc. is a manufacturer of high performance architectural aluminum window systems for over 50 years. We provide window solutions for new construction as well as replacement systems for existing structures. SCW products are especially well suited for noise attenuation and coastal storm protection. Typical SCW installations include schools, hotels, high-rise condominiums, college dormitories, military facilities, government office buildings and a variety of other commercial facilities where owners and tenants demand high performance and lasting value.
	PART 1	GENERAL
	1.1	SECTION INCLUDES
	** NOTE TO SPECIFIER ** Delete items below not required for project.
		A.	Aluminum double hung windows.
		B.	Aluminum horizontal rolling windows.
		C.	Aluminum fixed windows.
	1.2	RELATED SECTIONS
	** NOTE TO SPECIFIER ** Delete any sections below not relevant to this project; add others as required.
		A.	Section 07900 - Joint Sealers.
		B.	Section 08800 - Glazing.
	1.3	REFERENCES
	** NOTE TO SPECIFIER ** Delete references from the list below that are not actually required by the text of the edited section.
		A.	AAMA/NWWDA 101/I.S.2 - Voluntary Specifications for Aluminum, Vinyl (PVC), and Wood Windows and Glass Doors.
		B.	AAMA 2603 - Voluntary Specification for Pigmented Organic coatings on Aluminum Extrusions and Panels.
		C.	AAMA 2605 - Voluntary Specification for Superior Performance Organic coatings on Architectural Aluminum Extrusions and Panels.
		D.	AAMA 1503.1 - Voluntary Test Method for Thermal Transmittance and Condensation Resistance of Windows, Doors, and Glazed Wall Sections.
		E.	ASTM E90 - Standard Test Methods for Laboratory Measurement of Airborne Sound Transmission Loss of Building Partitions.
		F.	ASTM E 283 - Standard Test Method for Determining the Rate of Air Leakage Through Exterior Windows, Curtain Walls, and Doors Under Specified Pressure Differences Across the Specimen.
		G.	ASTM E 330 - Standard Test Method for Structural Performance of Exterior Windows, Curtain Walls, and Doors by Uniform Static Air Pressure Difference.
		H.	ASTM E 547 - Standard Test Method for Water Penetration of Exterior Windows, Curtain Walls, and Doors by Cyclic Static Air Pressure Differential.
		I.	ASTM F 588 - Standard Test Methods for Measuring the Forced Entry Resistance of Window Assemblies, Excluding Glazing Impact.
		J.	ASTM E1332 - Standard Classification for Determination of Outdoor-Indoor Transmission Class.
	1.4	SYSTEM DESCRIPTION
		A.	Design Requirements:
	** NOTE TO SPECIFIER ** Select type(s) of units required for the project from the subparagraphs below. Delete paragraphs that are not required..
			1.	Double hung units; thermally broken aluminum dual sash units conforming to, or exceeding, H-DW-HC50 per AAMA/NWWDA 101/I.S.2.
			2.	Horizontal rolling units; thermally broken aluminum dual sash units conforming to, or exceeding, DW-DW-HC50 per AAMA/NWWDA 101/I.S.2.
			3.	Fixed units; thermally broken aluminum fixed sash units conforming to, or exceeding, F-HC60 per AAMA/NWWDA 101/I.S.2.
	** NOTE TO SPECIFIER ** Retain paragraph below for double hung and/or horizontal rolling units. Delete if not required.
		B.	Performance Requirements (Operable Units):
			1.	Air Infiltration: Test window in accordance with ASTM E 283, primary sash closed and locked, secondary sash full open position; meet the following performance requirements:
				a.	Windows with Less than 18 Feet (5.486 m) of Operable Crack Perimeter: Not more than 2.8 cubic feet per minute (1.32 L/second) total when tested in a static pressure drop of 1.57 pounds per square foot (7.66 kg/square m), equivalent to 25 miles per hour (40.2 km/hour) wind velocity, or 6.3 cubic feet per minute (2.97 L/second) total when tested at 6.24 pounds per square foot (30.47 kg/square m), equivalent to 50 miles per hour (80.5 km/hour) wind velocity.
				b.	Windows with 18 Feet (5.486 m) or More of Operable Crack Perimeter: Not more than 0.10 cubic feet per minute (0.47 L/second) per square foot of window area at a static pressure drop of 1.57 pounds per square foot (7.66 kg/square m), or 0.20 cubic feet per minute (0.09 L/second) total when tested at 6.24 pounds per square foot (30.47 kg/square m).
			2.	Water Resistance: Test window in accordance with ASTM E 547, in the winter and summer mode with screen removed, as follows:
				a.	Primary sash closed and locked, secondary sash full open position; subject window to pressure drop of 8.00 pounds per square foot (39.1 kg/square m).
				b.	Both sets of sash closed and latched; subject window to minimum pressure drop of 12.00 pounds per square foot (58.6 kg/square m).
			3.	Uniform Load Structure Test: Test window in accordance with ASTM E 330, primary sash closed, secondary sash full open position.
	** NOTE TO SPECIFIER ** Select one or more of the following three paragraphs as applicable. Delete if not applicable to the project.
				a.	Double Hung Units: Static air pressure difference of 75.0 pounds per square foot (366.2 kg/square m), high pressure applied first on one side of unit and then on the other side.
				b.	Horizontal Rolling Units: Static air pressure difference of 75.0 pounds per square foot (366.2 kg/square m), high pressure applied first on one side of unit and then on the other side.
				c.	Fixed Units: Static air pressure difference of 90.0 pounds per square foot (439.4 kg/square m), high pressure applied first on one side of the unit and then the other side.
				d.	Static air pressure difference of 1.5 times design wind class used in AAMA/NWWDA 101/I.S.2.
				e.	At Conclusion of Test: No glass breakage; no permanent damage to fasteners, hardware parts, support arms, or actuating mechanisms; no other damage which would cause window to be inoperable; permanent deformation of any frame, sash, or ventilator member not exceeding 0.04 percent of its span.
			4.	Thermal Performance ("U" Value): Test window of exactly 4 by 6 foot (1.219 by 1.829 m) size in accordance with AAMA 1503.1.
	** NOTE TO SPECIFIER ** Select one or more of the following two paragraphs as applicable. Delete if not applicable to the project.
				a.	Double Hung Units: Thermal transmittance due to conductance not exceeding 0.56.
				b.	Horizontal Rolling Units: Thermal transmittance due to conductance not exceeding 0.57.
			5.	Condensation Resistance Factor (CRF): Test window of exactly 4 by 6 foot (1.219 by 1.829 m) size in accordance with AAMA 1503.1.
	** NOTE TO SPECIFIER ** Select one or more of the following two paragraphs as applicable. Delete if not applicable to the project.
				a.	Double Hung Units: CRF not less than 61.
				b.	Horizontal Rolling Units: CRF not less than 62.
			6.	Forced Entry Resistance: ASTM F 588.
	** NOTE TO SPECIFIER ** Select one or more of the following two paragraphs as applicable. Delete if not applicable to the project.
				a.	Double Hung Windows: Type A, Grade 40.
				b.	Horizontal Rolling Windows: Type A, Grade 40.
			7.	Sound Attenuation: Test window in accordance with ASTM E90 and ASTM 1332. STC shall not be less than 44; OITC shall not be less than 30.
	** NOTE TO SPECIFIER ** Retain "Performance Requirements" paragraph below for fixed units. Delete if not required.
		C.	Performance Requirements (Fixed Units):
			1.	Air Infiltration: Not more than 0.06 cubic feet per minute (0.028 L/second) per square foot of sash, tested in accordance with ASTM E 283 under a static pressure drop of 6.24 pounds per square foot (30.47 kg/square m), equivalent to 50 miles per hour (80.5 km/hour) wind velocity.
			2.	Water Resistance: No penetration of water into the plane of the innermost face of the window unit during a 15 minute test period under prescribed conditions of water application, tested in accordance with ASTM E 330 at a rate of 5.0 gallons per hour per square foot (204 L/hour/square m) and a static air pressure differential of 15 pounds per square foot (73.24 kg/square m).
			3.	Uniform Load Structure Test: No glass breakage or other damage and no permanent deformation of any member exceeding 0.04 percent of its span; subject separately to an exterior and interior uniform load in accordance with ASTM E 330, static air pressure difference of 90 pounds per square foot (439.4 kg/square m), pressure applied first on one side of unit and then on the other side.
			4.	Thermal Performance ("U" Value): Thermal transmittance not exceeding 0.55, tested in accordance with AAMA 1503.1.
			5.	Condensation Resistance Factor (CRF): CRF not less than 56, tested in accordance with AAMA 1504.
			6.	Sound Attenuation: Test window in accordance with ASTM E90 and ASTM 1332. STC shall not be less than 44; OITC shall not be less than 30.
	1.5	SUBMITTALS
		A.	Submit under provisions of Section 01300.
		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.
		C.	Shop Drawings: Show dimensions of aluminum windows, elevations, details of all window sections, anchorage and installation details, hardware, and interface with other products.
	** NOTE TO SPECIFIER ** Delete selection samples if colors have already been selected.
		D.	Selection Samples: For each finish product specified, two complete sets of color chips representing manufacturer's full range of available colors and patterns.
		E.	Verification Samples: For each finish product specified, two samples, minimum size 6 inches (150 mm) square, representing actual product, color, and patterns.
	1.6	QUALITY ASSURANCE
		A.	Manufacturer Qualifications: Minimum ten (10) years experience producing aluminum windows.
		B.	Installer Qualifications: Use installers that are experienced and skilled in the installation of aluminum windows of the type specified.
	** NOTE TO SPECIFIER ** Include a mock-up if the project size and/or quality warrant taking such a precaution. The following is one example of how a mock-up on a large project might be specified. When deciding on the extent of the mock-up, consider all the major different types of work on the project.
		C.	Mock-Up: Provide a mock-up for evaluation of surface preparation techniques and application workmanship.
			1.	Install in areas designated by Architect.
			2.	Do not proceed with remaining work until workmanship, color, and sheen are approved by Architect.
	1.7	DELIVERY, STORAGE, AND HANDLING
		A.	Deliver windows to project site in undamaged condition; handle windows to prevent damage to components and to finishes.
		B.	Store products in manufacturer's unopened packaging until ready for installation.
	1.8	WARRANTY
		A.	Provide written 10-year warranty signed by manufacturer that products are free of material or manufacturing defects. Defects are defined to include uncontrolled leakage of water, corner or joint failure, and abnormal aging or deterioration.
		B.	Include repair or replacement of defective units for 10 years from date of completion.
	PART 2	PRODUCTS
	2.1	MANUFACTURERS
		A.	Acceptable Manufacturer: St. Cloud Window, Inc., which is located at: P. O. Box 1577 ; St. Cloud, MN 56302-1577; Toll Free Tel: 800-383-9311; Tel: 320-251-9311; Fax: 320-255-1513; Email: request info; Web: www.stcloudwindow.com
	** NOTE TO SPECIFIER ** Delete one of the following two paragraphs; coordinate with requirements of Division 1 section on product options and substitutions.
		B.	Substitutions: Not permitted.
		C.	Requests for substitutions will be considered in accordance with provisions of Section 01600.
	2.2	WINDOWS
	** NOTE TO SPECIFIER ** Select sash required for the project below. Delete sash not required. Note that custom configurations are available. Consult with manufacturer for available options.
		A.	Provide SCW 900 Series aluminum windows in the configurations indicated on the Drawings and as follows:
			1.	Operating Sash:
				a.	Double Hung Windows.
				b.	Horizontal Rolling Windows.
			2.	Fixed Frames:
				a.	Rectangle.
				b.	Trapezoid.
				c.	Arch Top.
	2.3	MATERIALS
		A.	Frame, Sash, and Screen Members: Extruded aluminum alloy 6063-T6; 0.062 inch (1.57 mm) minimum wall thickness.
		B.	Thermal Barrier: Complete metal to metal separation between inner and outer frame members; not less than 1/4 inch (6.3 mm) wide. Poured and debridged polyurethane thermal barrier is not acceptable.
		C.	Weatherstripping: 100 percent woven pile with Mylar center fins.
		D.	Screens: Tubular aluminum frames; screen cloth securely held in place by means of reusable vinyl splines.
	** NOTE TO SPECIFIER ** Select paragraph required and delete paragraph not required.
			1.	Screen Cloth: 18 by 16 aluminum.
			2.	Screen Cloth: 18 by 16 fiberglass.
		E.	Hardware: Spring-loaded metal plunger type or spring-loaded pinch type. Lock to engage automatically as window is closed; locate as follows:
	** NOTE TO SPECIFIER ** Select paragraph(s) required and delete paragraph not required.
			1.	Double Hung Windows: Interior sill rails.
			2.	Horizontal Rolling Windows: Interior meeting rails.
	** NOTE TO SPECIFIER ** Retain paragraph F if specifying double hung windows, retain paragraph G. if specifying horizontal rolling windows.
		F.	Double Hung Window Balances: Block and Tackle zinc die cast metal with nylon rollers, capable of providing positive lifting force through full range of sash travel and holding sash stationary at any open position without the use of auxiliary frictional devices or holding clips; overhead balances, exposed balance cables, or fasteners are not acceptable. Use a minimum of 2 balances per sash.
		G.	Sash Rollers: Delrin lubricated with "Moly B" dry lubricant, operating on stainless steel axles.
	** NOTE TO SPECIFIER ** Retain paragraph below if specifying fixed windows.
		H.	Calking: Grade "A" type calking compound, Pecora, Tremco, Vulkem, or equal approved by architect; color to match color of aluminum unless otherwise approved by architect.
	2.4	GLAZING SCHEDULE
	** NOTE TO SPECIFIER ** Select one or more of the following two paragraphs as applicable. Delete if not applicable to the project.
		A.	Operable Windows:
			1.	Interior Sash: 1/4 inch (6.3 mm) clear glass.
			2.	Interior Sash: 1/4 inch (6.3 mm) clear glass with "hard coat" Low-E coating.
			3.	Exterior Sash: 1/4 inch (6.3 mm) clear glass.
			4.	Exterior Sash: 1/4 inch (6.3 mm) tinted clear glass.
		B.	Fixed Windows:
			1.	One inch (25.4 mm) thick insulating glass.
			2.	One and one quarter inch (31.75 mm) thick insulating glass.
			3.	Insulated panels 1.25 inch (31.75 mm) to 4.25 inch (107.95 mm).
		C.	Specialty Glazing: Provide Tempered, laminated, Obscure, or other specialty glazing as indicated on the Drawings.
	2.5	FABRICATION
		A.	General:
			1.	Fabricate windows as two separate frames permanently interlocked by a rigid thermal barrier.
	** NOTE TO SPECIFIER ** Retain paragraph 2. if specifying operable windows, retain paragraph 3. if specifying fixed windows. Delete paragraph if not required.
			2.	Operable Frame and Sash Joints: Butt type secured by means of thread-cutting type screws anchored into screw ports, ports integral parts of frame members.
			3.	Fixed Frame Joints: Miter or butt type secured by means of thread-cutting type screws anchored into screw ports, ports integral parts of frame members.
			4.	Corners: Joined neatly in a manner to provide watertight connections. All frame corners to be fitted with a neoprene gasket.
			5.	Deburr and make smooth all sharp milled edges and corners.
	** NOTE TO SPECIFIER ** Retain subparagraphs below if specifying operable windows. Delete paragraph if not required.
			6.	Internally seal sash corners.
			7.	Fabricate meeting rails of tubular construction, double weatherstripped and interlocked when in closed position.
			8.	Fabricate window units in a manner to facilitate replacement of worn or damaged parts, hardware, or weatherstripping.
		B.	Sill Frames: Tubular sections, formed from single extrusions (2-pieces joined to form a tube are not acceptable), 5-degree minimum slope with a closed-weep system (including aluminum weep flaps) to prevent accumulation of water in sill and intrusion of insects.
		C.	Thermal Barrier: Interlock both halves of frame, securing them together without inhibiting expansion and contraction of either part; apply bead of sealant to complete perimeter of window to seal joints between frame and thermal barrier.
		D.	Weatherstripping: Double weatherstripped all sash at perimeter of master frame. All weatherstrip to be contained in profiles extruded into the sash pockets of the master frame to prevent movement and excessive wear. Except at meeting stiles, weatherstrip contained in sash rails shall not be accepted. Secure weatherstripping to prevent movement.
	** NOTE TO SPECIFIER ** Retain paragraph E. if specifying double hung windows, retain paragraph F. if specifying horizontal rolling windows.
		E.	Double Hung Windows:
			1.	Fully balance each sash with a minimum of two balances.
			2.	Locate balances inside jamb sash; make removable with the use of take out clips for ease of replacement without the use of special tools.
		F.	Horizontal Rolling Windows: Fabricate sash to operate on rollers in bottom sash rail in a concealed manner, not protruding beyond bottom of sash rail.
	2.6	FINISH
	** NOTE TO SPECIFIER ** Windows can bbe finished the same on both sides or can have different finishes on the inter and the exterior surfaces. Select finish from the following paragraphs and delete those not required for the project.
		A.	Finish exposed surfaces of aluminum windows in two colors as follows:
			1.	Finish exterior exposed surfaces of aluminum windows, panning, and trim as follows:
	** NOTE TO SPECIFIER ** Select finish from the following subparagraphs and delete those not required for the project.
				a.	Natural Anodized: Class II AA-C22A31 204-R1, etched and clear anodized to 0.4 mil (0.010 mm).
				b.	Champagne Anodized: Class I AA-C22A44 204-R1, anodized to 0.7 mil (0.018 mm).
				c.	Light Bronze Anodized: Class I AA-C22A44 204-R1, anodized to 0.7 mil (0.018 mm).
				d.	Medium Bronze Anodized: Class I AA-C22A44 204-R1, anodized to 0.7 mil (0.018 mm).
				e.	Dark Bronze Anodized: Class I AA-C22A44 204-R1, anodized to 0.7 mil (0.018 mm).
				f.	Black Anodized: Class I AA-C22A44 204-R1, anodized to 0.7 mil (0.018 mm).
				g.	Organic Paint Coating: Fluoropolymer organic coating in a color selected by the architect; meet or exceed AAMA 2605 specifications for Superior Performance Organic Coatings on Aluminum Extrusions and Panels.
				h.	Organic Paint Coating: Baked Polyester Enamel or Acrylic coating in a color selected by the architect; meet or exceed AAMA 2603 specifications for Pigmented Organic Coatings on Aluminum Extrusions and Panels.
			2.	Finish interior exposed surfaces of aluminum windows, panning, and trim as follows:
	** NOTE TO SPECIFIER ** Select finish from the following subparagraphs and delete those not required for the project.
				a.	Natural Anodized: Class II AA-C22A31 204-R1, etched and clear anodized to 0.4 mil (0.010 mm).
				b.	Champagne Anodized: Class I AA-C22A44 204-R1, anodized to 0.7 mil (0.018 mm).
				c.	Light Bronze Anodized: Class I AA-C22A44 204-R1, anodized to 0.7 mil (0.018 mm).
				d.	Medium Bronze Anodized: Class I AA-C22A44 204-R1, anodized to 0.7 mil (0.018 mm).
				e.	Dark Bronze Anodized: Class I AA-C22A44 204-R1, anodized to 0.7 mil (0.018 mm).
				f.	Black Anodized: Class I AA-C22A44 204-R1, anodized to 0.7 mil (0.018 mm).
				g.	Organic Paint Coating: Fluoropolymer organic coating in a color selected by the architect; meet or exceed AAMA 2605 specifications for Superior Performance Organic Coatings on Aluminum Extrusions and Panels.
				h.	Organic Paint Coating: Baked Polyester Enamel or Acrylic coating in a color selected by the architect; meet or exceed AAMA 2603 specifications for Pigmented Organic Coatings on Aluminum Extrusions and Panels.
		B.	Finish exposed surfaces of aluminum windows, panning, and trim as follows:
	** NOTE TO SPECIFIER ** Select finish from the following subparagraphs and delete those not required for the project.
			1.	Natural Anodized: Class II AA-C22A31 204-R1, etched and clear anodized to 0.4 mil (0.010 mm).
			2.	Champagne Anodized: Class I AA-C22A44 204-R1, anodized to 0.7 mil (0.018 mm).
			3.	Light Bronze Anodized: Class I AA-C22A44 204-R1, anodized to 0.7 mil (0.018 mm).
			4.	Medium Bronze Anodized: Class I AA-C22A44 204-R1, anodized to 0.7 mil (0.018 mm).
			5.	Dark Bronze Anodized: Class I AA-C22A44 204-R1, anodized to 0.7 mil (0.018 mm).
			6.	Black Anodized: Class I AA-C22A44 204-R1, anodized to 0.7 mil (0.018 mm).
			7.	Organic Paint Coating: Fluoropolymer organic coating in a color selected by the architect; meet or exceed AAMA 2605 specifications for Superior Performance Organic Coatings on Aluminum Extrusions and Panels.
			8.	Organic Paint Coating: Baked Polyester Enamel or Acrylic coating in a color selected by the architect; meet or exceed AAMA 2603 specifications for Pigmented Organic Coatings on Aluminum Extrusions and Panels.
	PART 3	EXECUTION
	3.1	EXAMINATION
		A.	Do not begin installation until openings have been properly prepared.
		B.	If preparation is the responsibility of another installer, notify Architect of unsatisfactory preparation before proceeding.
	3.2	PREPARATION
		A.	Clean surfaces thoroughly prior to installation.
		B.	Prepare surfaces using the methods recommended by the manufacturer for achieving the best result for the project conditions.
	3.3	INSTALLATION
		A.	Install windows and related components in accordance with approved shop drawings and manufacturer's requirements.
		B.	Erect materials plumb, level, and true relative to the building structure, maximum variation from plumb and level not exceeding 1/8 inch in 10 feet (3 mm in 3 m).
		C.	Install approved insulation materials in the frame cavity on the interior portion of the window frame, area adjacent to exterior of window frame remaining uninsulated.
			1.	Exercise caution to avoid overlapping insulation materials across thermal barrier connectors.
			2.	Exercise caution to avoid bridging of the two separated frame members.
		D.	Apply calking at all points between masonry and aluminum outer frame; apply in a manner to ensure airtight and watertight continuous perimeter seal so as to prohibit seepage of cold air into the insulated cavity.
	** NOTE TO SPECIFIER ** Include Field Quality Control if the project size and/or quality warrant taking such a precaution. The following is one example of how field testing on a large project might be specified. Delete if not required.
	3.4	FIELD QUALITY CONTROL
		A.	The Architect retains the option to pay for a certified testing laboratory to conduct on-site tests for air infiltration and water infiltration as specified in "Performance Requirements" above.
		B.	The Architect will select two or more windows to be tested.
		C.	Window manufacturer shall repair or replace window units not meeting specified performance requirements and the cost of re-testing an equal quantity of windows shall be borne by Window Manufacturer.
	3.5	CLEANING
		A.	After installation, remove all sealants, calking, and other misplaced materials from all surfaces, including adjacent work.
		B.	Thoroughly clean window frames, casings, and glass using materials and methods recommended by the window and glass manufacturer that do not cause defacement of work.
	3.6	PROTECTION
		A.	Protect installed products until completion of project.
		B.	Touch-up, repair or replace damaged products before Substantial Completion.
	END OF SECTION