Unit SkylightsME- Building Group

SECTION 086200 - UNIT SKYLIGHTS

PART 1 - GENERAL

1.1RELATED DOCUMENTS

  1. Drawings and general provisions of the Contract, including General and Supplementary Conditions and Division01 Specification Sections, apply to this Section.

1.2SUMMARY

  1. This Section includes factory-assembled unit skylights for installation in roof areas.
  2. Type: Self flashing with integral curb.
  3. Glazing: Acrylic.

1.3PERFORMANCE REQUIREMENTS

  1. Structural Loads:
  2. Snow Load: 30 psf, unless otherwise directed.
  3. Negative Pressure (Uplift) Load: 25 psf, unless otherwise directed.

1.4SUBMITTALS

  1. Product Data: For each product indicated.
  2. LEED Submittals
  3. Product Data for CreditMR4: For products having recycled content, manufacturer documentation indicating percentages by weight of postconsumer and preconsumer recycled content.
  4. Include statement indicating costs for each product having recycled content.
  5. Product Data for Credit MR 5: For products and materials to comply with requirements for regional materials, provide documentation indicating location of product or material manufacturing location and the point of extraction, harvest, or recovery for each raw material.
  6. Include documentation on distance to project, contractor cost for each regional material, and percent by weight that is considered regional.
  7. Product Data for CreditIEQ4.1: For sealants and sealant primers used inside the weatherproofing system, including printed statement of VOC content.
  8. Shop Drawings: Include details of installation.
  9. Samples: For each exposed finish.

1.5QUALITY ASSURANCE

  1. Fire-Test Response Characteristics of Plastic Glazing:
  2. Self-Ignition Temperature: 650 degF or greater for plastic sheets in thickness indicated when tested per ASTMD1929.
  3. Smoke Production Characteristics: Comply with either requirement below:
  4. Smoke-Developed Index: 450 or less when tested per ASTME84 on plastic sheets in manner indicated for use.
  5. Smoke Density: 75 or less when tested per ASTMD2843 on plastic sheets in thickness indicated for use.
  6. Relative-Burning Characteristics: Tested per ASTMD635.
  7. Acrylic Glazing: ClassCC2, burning rate of 2.5 inches per minute or less for nominal thickness of 0.060 inch or thickness indicated for use.

1.6WARRANTY

  1. Special Warranty: Manufacturer's standard form in which manufacturer agrees to repair or replace components of unit skylights that fail in materials or workmanship within specified warranty period.
  2. Warranty Period: Five years from Substantial Completion.

PART 2 - PRODUCTS

2.1UNIT SKYLIGHTS

  1. MANUFACTURERS

Retain "Basis-of-Design Product" Paragraph and manufacturer below to identify a spectral-type skylight product. This product should be deleted and a product from different manufacturers substituted if a spectral skylight is not desired.

  1. Basis of Design Products: Subject to compliance with requirements, provide Sunoptics Prismatic Skylights, Model 800MD, or approved substitution.
  2. Fixed industrial skylight with insulated thermal break.
  3. Size 4060, double glazed signature series dome.
  4. Provide with safety security guard.
  1. General: Factory-assembled units that include glazing, extruded-aluminum glazing retainers, gaskets, and inner frames and that are capable of withstanding design loads indicated.
  2. Integral Curb: Self-flashing type.
  3. Height: 12 inches.
  4. Insulation: Manufacturer's standard rigid or semirigid type.
  5. Unit Shape and Size: As indicated.
  6. Acrylic Glazing: ASTMD4802, thermoformable, monolithic sheet, Categoryas standard with manufacturer, TypeUVA (formulated with UV absorber), Finish1 (smooth or polished).

Retain color selection below if Basis of Design Product is used. If a substitution is made, revise choices to match product selected.

  1. Double-Glazing:
  2. Outer Glazing Color: Clear, prismatic.
  3. Inner Glazing Color: White, translucent.
  1. Glazing Gaskets: Manufacturer's standard.
  2. Aluminum Components:
  3. Sheets: ASTMB209, alloy and temper to suit forming operations and finish requirements but with not less than the strength and durability of alclad alloy3005-H25.
  4. Extruded Shapes: ASTMB221, alloy and temper to suit structural and finish requirements but with not less than the strength and durability of alloy6063-T52.
  5. High-Performance Organic Coating: Fluoropolymer, two-coat thermocured system with topcoat containing not less than 70 percent polyvinylidene resin by weight; complying with AAMA 2605.
  6. Basis-of-Design System: PPG Coil Coatings, Duranar (Fluorofinish, Centria)
  7. Color: PPG 5MW50121 (CENTRIA Regal White 179) as verified by the Architect.
  8. Fasteners: Same metal as metal being fastened, nonmagnetic stainless steel, or other noncorrosive metal as recommended by manufacturer. Finish exposed fasteners to match material being fastened.
  9. Where removal of exterior exposed fasteners might allow access to building, provide nonremovable fastener heads.
  10. Condensation Control: Fabricate unit skylights with integral internal gutters and nonclogging weeps to collect and drain condensation to the exterior.
  11. Thermal Break: Fabricate unit skylights with thermal barrier separating interior metal framing from materials exposed to outside temperature.

2.2INSTALLATION MATERIALS

  1. Bituminous Coating: SSPC-Paint12, solvent-type, bituminous mastic, nominally free of sulfur and containing no asbestos fibers, formulated for 15-mil dry film thickness per coating.
  2. Mastic Sealant: Polyisobutylene; nonhardening, nonskinning, nondrying, nonmigrating sealant.
  3. Elastomeric Sealant: ASTMC920; TypeS; GradeNS; Class25; and UsesNT, G, A, and (as applicable to joint substrates indicated) O; recommended by unit skylight manufacturer and compatible with joint surfaces.
  4. Roofing Cement: ASTMD4586, asbestos free, designed for trowel application or other adhesive compatible with roofing system.

PART 3 - EXECUTION

3.1INSTALLATION

  1. Coordinate unit skylight installation with installation of substrates, roof insulation, roofing, and flashing as required to ensure that each element of the Work performs properly and that combined elements are waterproof and weathertight.
  2. Unless otherwise indicated, install unit skylights according to construction details of NRCA's "The NRCA Roofing and Waterproofing Manual."
  3. Where metal surfaces of units will contact incompatible metal or corrosive substrates, including wood, apply bituminous coating on concealed metal surfaces, or provide other permanent separation recommended in writing by unit skylight manufacturer.

END OF SECTION

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Revision Date: 01/21/14 Project & Bid Package

File name: 086200 UNIT SKYLIGHTS