NOTE ** Naturalite skylights with acrylic and polycarbonate glazing.
NOTE **
NOTE ** This section is based on products manufactured by Naturalite Skylight Systems, Butler Manufacturing Company, which is located at:
NOTE ** 803 Airport Road
NOTE ** P.O.Box 629
NOTE ** Terrell, TX 75160
NOTE ** Tel: (800) 259-7941
NOTE ** Fax: (972) 551-6129
NOTE **
NOTE ** Naturalite makes square domed and pyramid units, circular, ridge type and barrel vaulted units, with and without integral curbs. Some models are available with thermal break and sealed domes.
NOTE **
NOTE ** SECTION 08620 - PLASTIC UNIT SKYLIGHTS, Copyright 1997, The Architect's Catalog, Inc.
NOTE ** PRODUCT SELECTION CONSIDERATIONS: In addition to options noted in the text, the following are some important considerations in selection of unit skylights:
NOTE **
NOTE ** ENERGY CONSERVATION: Double glazing or double domes are recommended.
NOTE **
NOTE ** CONDENSATION: Under certain conditions of high humidity and/or large inside to outside temperature differentials, condensation may occur on the aluminum framing and plastic glazing material. Double glazing will usually reduce the occurrence of condensation on the glazing, but will not totally eliminate it. Since plastic glazing cannot be hermetically sealed, condensation can form between the double layers of plastic but it will normally dissipate as the air space is heated by the sun. Sealed domes, where the flanges are sealed together ("bed" sealed), are more resistant to the formation of condensation and will reduce accumulation of dust and foreign matter. Sealed domes are available for most dome glazed unit skylights at additional cost.
NOTE ** PLASTIC GLAZING: Acrylic plastic is the standard glazing type, in clear and 3 standard colors. A full range of custom translucent and transparent tints is also available. Polycarbonate sheet may be requried for greater impact resistance or to meet some fire code requirements. Refer to your local building code for acceptable types and possible square foot area restrictions. Do not use abrasion resistant plastic materials for domes, since they should not be thermoformed.
PART 1 GENERAL
1.1 SECTION INCLUDES
NOTE ** Delete any products not required for this project.
A. Individual unit skylights.
B. Interior ceiling domes.
C. Extra replacement domes.
1.2 RELATED SECTIONS
NOTE ** Delete any sections below not relevant to this project; add others as required.
A. Section 06100 - Rough Carpentry: Wood curbs for skylights.
B. Section 07510 - Built-Up Bituminous Roofing: Base flashing at skylight curbs.
C. Section 07530 - Elastomeric Membrane Roofing: Base flashing at skylight curbs.
D. Section 07550 - Modified Bituminous Sheet Roofing: Base flashing at skylight curbs.
E. Section 07620 - Sheet Metal Flashing and Trim.
F. Section 07610 - Sheet Metal Roofing: Metal flashing at skylight curbs.
1.3 REFERENCES
NOTE ** Delete references from the list below that are not actually required by the text of the edited section.
A. AA - Aluminum Design Manual; The Aluminum Association.
B. AAMA 603.8 - Voluntary Performance Requirements and Test Procedures for Pigmented Organic Coatings on Extruded Aluminum; American Architectural Manufacturers Association.
C. AAMA 605.2 - Specification for High Performance Organic Coatings on Architectural Extrusions and Panels; American Architectural Manufacturers Association.
D. AAMA 606.1 - Voluntary Guide Specifications and Inspection Methods for Integral Color Anodic Finishes for Architectural Aluminum; American Architectural Manufacturers Association.
E. AAMA 607.1 - Voluntary Guide Specification and Inspection Methods for Clear Anodic Finishes for Architectural Aluminum; American Architectural Manufacturers Association.
F. AAMA 1605.1 - Voluntary Standard Uniform Load Test Procedure for Plastic Glazed Skylights by Uniform Static Air Pressure Difference; American Architectural Manufacturers Association.
G. ASTM D 4802 - Standard Specification for Poly(Methyl Methacrylate) Acrylic Plastic Sheet.
H. ASTM E 330 - Standard Test Method for Structural Performance of Exterior Windows, Curtain Walls, and Doors By Uniform Static Air Pressure Difference.
I. ASTM E 331 - Standard Test Method for Water Penetration of Exterior Windows, Curtain Walls and Doors by Uniform Static Air Pressure Difference.
1.4 SUBMITTALS
A. Submit under provisions of Section 01300.
B. Product Data: Manufacturer's descriptive literature, specifications, use limitations and recommendations.
C. Shop Drawings: Prepared specifically for this project, include:
1. Detailed plans and elevations, details of framing members, materials, sealants, fasteners, and anchors.
2. Type and thickness of formed flashing and closures.
3. Details of interface with adjacent materials.
NOTE ** Delete the following paragraph if colors are completely specified or indicated on the drawings.
D. Selection Samples: Two sets of color charts or samples, for selection of colors.
E. Glazing Samples: Two pieces of plastic glazing material in specified color, for verification.
NOTE ** Delete the following paragraph if only mill finish aluminum is specified.
F. Metal Finish Samples: Two pieces of aluminum with specified finish and color, for verification; it is not necessary to submit mill finish samples.
1.5 QUALITY ASSURANCE
A. Manufacturer Qualifications: Minimum of 10 years experience in the fabrication and installation of similar products.
B. Installer Qualifications: Minimum of 2 years experience in installation of similar units.
1.6 DELIVERY, STORAGE, AND HANDLING
A. Arrange deliveries to avoid delays but to minimize on-site storage.
B. Deliver products in labelled packages.
C. Deliver, handle, and store in strict compliance with manufacturer's instructions and recommendations.
1.7 WARRANTY
A. Skylight Warranty: Provide written warranty signed by manufacturer that products are free of defects in material and workmanship. Include repair or replacement of work for five years from date of completion. Defects are defined to include uncontrolled leakage of water and abnormal aging or deterioration.
NOTE ** Delete the following paragraph if fluoropolymer finish is not specified. Anodized and baked enamel finishes are normally covered by the standard one-year warranty, but additional coverage may be available pending manufacturer review of geographic location and at additional cost.
B. Fluoropolymer Finish Warranty: Provide written warranty signed by manufacturer and finisher that finish is free of defects in material and workmanship. Include repair or replacement of work which exhibits defects for five years from date of completion. Defects are defined to include peeling, chipping, chalking, fading, abnormal aging or deterioration, and failure to perform as required.
PART 2 PRODUCTS
2.1 MANUFACTURERS
A. Provide products made by Naturalite Skylight Systems, Butler Manufacturing Company, P.O. Box 629, 750 Airport Road, Terrell, TX 75160. ASD. Tel: (800) 527-4018. Fax: (972) 551-6420.
NOTE ** Delete one of the two following paragraphs; coordinate with Division 1 requirements. If other manufacturers must be listed, Plasteco and Wasco Products Inc. may manufacture products of equivalent performance.
B. Requests for substitution will be considered in accordance with provisions of Section 01600.
C. Substitutions: Not permitted.
D. For manufacturers not listed, submit evidence of ability to provide products that meet both performance and product requirements, including list of projects of similar design and complexity completed within the last 5 years.
E. Provide primary materials that are made by a single manufacturer.
2.2 SKYLIGHTS
A. Skylights - Performance Requirements: Design to withstand the following loads:
NOTE ** Enter the required performance values in the paragraphs below. Unit skylights used in low-rise construction where the roof elevation is 60 feet or less above grade should be designed to support a snow load of 20 psf and negative wind pressure of 20 psf, minimum. Greater capacity may be required depending on code requirements or project location. Most Naturalite unit skylights are designed for 40 psf snow load.
1. Snow load: ___ psf (___ kPa).
2. Wind load: ___ psf (___ kPa) negative.
3. Seismic loads: As required by applicable code.
4. Dead loads.
NOTE ** Delete the following paragraph if Vertex(tm) skylights are not specified.
5. Impact resistance: No breakage or disengagement of dome from frame upon impact of 775 pounds-force.
NOTE ** Delete either of the following two paragraphs if not required.
6. Show compliance with wind load requirements by testing in accordance with ASTM E 330.
7. Show compliance with wind load requirements by testing in accordance with AAMA 1605.1.
B. Skylights: Factory-assembled, aluminum frame with plastic dome.
NOTE ** Delete either of the following two paragraphs if not required.
1. ICBO-approved as evidenced by current ICBO-ES report; submit report number.
2. Plastic Glazing: Comply with requirements of UBC 1994, Chapter 2603.7.
NOTE ** Plastic glazing materials are not designed to support live loads or impact loads. The "risk of fall" label is applied to warn of potential danger.
3. Provide with label warning of the risk of falling, indicating that plastic glazing is not designed to support live loads.
4. Design aluminum members in accordance with AA Aluminum Design Manual.
NOTE ** Delete the following paragraph if all skylights specified are of standard sizes -- field measurements are of no use in that case.
5. When practical, take accurate field measurements before fabrication. Do not delay job progress; allow for field adjustment.
6. Clear Anodized Finish: Comply with AAMA 607.1, A31.
7. Color Anodized Finish: Comply with AAMA 606.1, A44.
8. Baked Enamel Finish: Comply with AAMA 603.8; color to be selected from manufacturer's standard selection.
9. Fluoropolymer Finish: 70 percent Kynar 500(R)/ Hylar 500(R), complying with AAMA 605.2; color to be selected from manufacturer's standard selection.
10. Finish only exposed aluminum members.
NOTE ** In the paragraphs that follow, "Type" numbers may be entered to identify different skylight types on the drawings. If only one skylight type is required, delete the words "Type ___".
NOTE **
NOTE ** There are options for each skylight -- delete all of the paragraphs that do not apply. When complete, there should be only one selection for "type", glazing type, glazing color, frame finish, and size.
C. Skylight Type ___: For mounting on separate curb.
1. Frame: 0.078 inch (2.0 mm) extruded aluminum, with integral condensate gutter.
2. Dome Retaining Angle: 0.062 inch (1.6 mm) extruded aluminum.
NOTE ** Delete one of the following two paragraphs. The first is for the "non-thermalized" type (Models L, LDD, PL, and PLDD); the second is for the "thermalized type" (Models TL, PTL, and PTLP), which is available only in double dome types.
3. Provide sufficient drainage slots to carry all moisture to the outside.
4. Provide poured and debridged polyurethane thermal break frame without weep holes, with factory sealed corners; seal domes to frame with neoprene gaskets and between domes with isobutylene/isoprene gaskets.
5. Type: Single dome.
6. Type: Double dome.
7. Type: Pyramid single dome.
8. Type: Pyramid double dome.
NOTE ** Delete one of the following two paragraphs. Polycarbonate glazing is available only in pyramids.
9. Domes: Acrylic plastic glazing.
10. Domes: Polycarbonate plastic glazing.
11. Outer Dome Color: Colorless.
12. Outer Dome Color: White.
13. Outer Dome Color: Bronze.
14. Outer Dome Color: Grey.
NOTE ** Delete the following two paragraphs if single dome skylight has been specified. Otherwise, delete one of the two paragraphs.
1. Frame: 0.062 inch (1.6 mm) extruded aluminum, with integral condensate gutter.
2. Dome Retaining Angle: 0.062 inch (1.6 mm) extruded aluminum.
3. Curb: Double aluminum wall, 9 inches (229 mm) high, with 3 inch (75 mm) roof flange, and 1 inch (25 mm) layer of fiberglass insulation.
NOTE ** Delete one of the following two paragraphs. The first is for the "non-thermalized" type (Models A, PA, ADD, PADD, AMR, and ADDMR); the second is for the "thermalized type" (Models TLA, PTLA, and PTLAP), which is available only in double dome types.
4. Provide sufficient drainage slots to carry all moisture to the outside.
5. Provide poured and debridged polyurethane thermal break frame without weep holes, with factory sealed corners; seal domes to frame with neoprene gaskets and between domes with isobutylene/isoprene gaskets.
6. Type: Single dome.
7. Type: Double dome.
8. Type: Pyramid single dome.
9. Type: Pyramid double dome.
NOTE ** Delete the following paragraph if not required. Available only in domes (not pyramids).
10. Style: For installation on metal roof.
NOTE ** Delete one of the following two paragraphs. Polycarbonate glazing is available only in pyramids.
11. Domes: Acrylic plastic glazing.
12. Domes: Polycarbonate plastic glazing.
13. Outer Dome Color: Colorless.
14. Outer Dome Color: White.
15. Outer Dome Color: Bronze.
16. Outer Dome Color: Grey.
NOTE ** Delete the following two paragraphs if single dome skylight has been specified. Otherwise, delete one of the two paragraphs.
E. Skylight Type ___: Self-flashing type, for single-ply roofing.
1. Curb and Frame: Two-piece, 0.078 inch (2.0 mm) extruded aluminum, 9 inches (230 mm) high, with 3 inch (75 mm) roof flange, with condensate gutter and sufficient drainage slots to carry all moisture to the outside, wood nailer and 3/4 inch (19 mm) thick polyisocyanurate insulation.
2. Removable 0.062 inch (1.6 mm) extruded aluminum cap flashing with snap-in corner covers.
3. Dome Retaining Angle: 0.050 inch (1.3 mm) extruded aluminum.
4. Type: Single dome.
5. Type: Double dome.
NOTE ** Delete one of the following two paragraphs. Polycarbonate glazing is available only in pyramids.
6. Domes: Acrylic plastic glazing.
7. Domes: Polycarbonate plastic glazing.
8. Outer Dome Color: Colorless.
9. Outer Dome Color: White.
10. Outer Dome Color: Bronze.
11. Outer Dome Color: Grey.
NOTE ** Delete the following two paragraphs if single dome skylight has been specified. Otherwise, delete one of the two paragraphs.
NOTE ** STRUCTURAL NOTE: Continuous vault type skylights exert horizontal thrust on their supports, as well as dead loads. Their curbs must be designed to resist this horizontal movement -- coordinate with your structural engineer.
G. Skylight Type ___: Continuous vaulted type, aluminum framed, for mounting on separate curb.
1. Rafters: Curved extruded aluminum, with compression-type glazing retainers using continuous black EPDM glazing gaskets above and below glazing.
NOTE ** Rafter members need to be spaced at 4 feet on center for snow load up to 30 psf and at 3 feet on center for snow load up to 40 psf. Standard spacing means that the manufacturer will select the spacing. If custom spacing is selected, be sure that the spacing is shown on the drawings and that it will be acceptable to the manufacturer.
NOTE **
NOTE ** Delete one of the following two paragraphs.
2. Rafter Spacing: Standard.
3. Rafter Spacing: Custom.
4. Sill Members: Collect and weep water infiltration and condensation to the exterior; factory-slot sill members at anchor locations to allow for thermal movement.
NOTE ** Delete the following paragraph if only single-glazed models are specified.
5. Performance: No uncontrolled water leakage when tested in accordance with ASTM E 331, at 6.24 psf static pressure differential; submit test reports.
6. Type: Single glazed.
7. Type: Double glazed.
8. Ends: Vertical.
9. Ends: Domed.
10. Ends: Open.
11. Ends: Abutting walls.
12. Ends: As indicated on drawings.
NOTE ** Delete the following paragraph if not required -- additional cost.
13. Provide rafter glazing caps to conceal glazing fasteners.
NOTE ** Delete one of the following two paragraphs.
14. Glazing: Acrylic plastic.
15. Glazing: Polycarbonate.
16. Outer Glazing Color: Colorless.
17. Outer Glazing Color: White.
18. Outer Glazing Color: Bronze.
19. Outer Glazing Color: Grey.
NOTE ** Delete the following two paragraphs if single dome skylight has been specified. Otherwise, delete one of the two paragraphs.
I. Skylight Type ___: Circular, with integral curb.
1. Glazing Retaining Angle: 0.062 inch (1.6 mm) extruded aluminum.
2. Curb: 0.032 inch (0.8 mm) aluminum curb walls, 3 inch (75 mm) mounting flange, condensate gutter, and weep holes to carry all moisture to the outside.
NOTE ** Delete one of the following two paragraphs.
3. Curb Height: 4 inches (100 mm).
4. Curb Height: 9 inches (230 mm).
5. Type: Single dome.
6. Type: Double dome.
7. Dome: Acrylic plastic.
8. Outer Dome Color: Colorless.
9. Outer Dome Color: White.
10. Outer Dome Color: Bronze.
11. Outer Dome Color: Grey.
NOTE ** Delete the following two paragraphs if single dome skylight has been specified. Otherwise, delete one of the two paragraphs.
12. Inner Dome Color: Colorless.
13. Inner Dome Color: White.
NOTE ** Manufacturer's standard finish is mill finish aluminum. Consult manufacturer for available architectural finishes.
NOTE ** Ceiling domes come in square, rectangular, and circular shapes.
K. Ceiling Domes: Inside-mounted ceiling dome, to fit inside well, shape and size as indicated on drawings.
1. Frame: 0.050 inch (1.3 mm) extruded aluminum.
2. Glazing: Acrylic plastic glazing.
3. Dome Color: White.
4. Frame Finish: Manufacturers standard acrylic white finish.
NOTE ** If extra domes are required, insert either the designation or a description of the skylights for which the extra domes are intended, so the contractor can order the correct size.
L. Extra Domes: Skylight replacement dome without frame, for Skylight _____.
1. Glazing: Acrylic plastic glazing.
2. Color: Colorless.
3. Color: White.
4. Color: Bronze.
5. Color: Grey.
PART 3 EXECUTION
3.1 EXAMINATION
NOTE ** DRAWING COORDINATION: The drawings should indicate the locations, types, and dimensions of the skylight units, and show details of interface with adjacent construction.
A. Take field measurements to verify that fabricated work will fit spaces intended.
B. Verify that areas in which work is to be installed are ready for installation and that curbs are installed and level.
C. Do not proceed until unsatisfactory conditions have been corrected.
3.2 INSTALLATION
A. Install in strict accordance with manufacturer's instructions and recommendations and with approved shop drawings; provide a complete weatherproof assembly.
NOTE ** The following paragraph coincides with the NRCA recommendation for roof-mounted units and curbs.
B. Maintain dimension from top of curb to finish roofing of 8 inches (200 mm), minimum; provide additional blocking if required.
C. Anchor securely to supporting structure, but allow for differential and thermal movement.
D. Separate aluminum members from dissimilar metals with protective coating or sheet capable of preventing electrolytic action.
E. Ensure that weep and condensation control measures function properly.
F. Coordinate with other work.
3.3 CLEANING AND REPAIR
A. Do not remove the "risk of fall" label from units.
B. Remove labels, part number markings, sealant smears, handprints, and construction dirt; protect installed work from damage.
C. Clean all exposed surfaces immediately prior to final inspection, using non-abrasive materials and methods recommended by manufacturer.
D. Repair damaged components and finishes in accordance with manufacturer's recommendations; replace work that cannot be repaired to the satisfaction of the Architect.
