SPECIAL SPECIFICATION

SECTION 07810

[PLASTIC UNIT SKYLIGHTS]{.underline}

Page

PART 1 - GENERAL

1.01 Related Documents
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1.02 References
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1.03 Summary
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1.04 Submittals
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1.05 Quality Assurance
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1.06 Warranty
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PART 2 - PRODUCTS

2.01 Manufacturers
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2.02 Materials
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2.03 Finishes
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2.04 Plastic Skylight Units
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PART 3 - EXECUTION

3.01 Installation
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3.02 Cleaning and Protection
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SPECIAL SPECIFICATION

SECTION 07810

[PLASTIC UNIT SKYLIGHTS]{.underline}

PART 1 - GENERAL

1.01 [RELATED DOCUMENTS]{.underline}

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

1.02 [REFERENCES]{.underline}

A. [American Society of Testing and Materials (ASTM)]{.underline}

B 209 Specification for Aluminum and Aluminum-Alloy Sheet and Plate

B 221 Specification for Aluminum and Aluminum-Alloy Extruded Bars, Rods,
Wire Shapes, and Tubes

C 920 Specification for Elastomeric Joint Sealants

D 635 Specification for Steel, Sheet and Strip, Heavy-Thickness Coils,
Carbon, Hot-Rolled

D 2843\_ Test Method for Density of Smoke from the Burning or
Decomposition of Plastics

D 4586 Specification for Asphalt Roof Cement, Asbestos Free

D 4802 Specification for Poly(Methyl Methacrylate) Acrylic Plastic Sheet

B. [National Association of Architectural Metal Manufacturers
(NAAMM)]{.underline}

1.03 [SUMMARY]{.underline}

A. This Section includes plastic unit skylights.

1.04 [SUBMITTALS]{.underline}

A. [General]{.underline}: Submit the following according to the
Conditions of Contract and Division 1 Specification Sections.

B. Product data for each type of skylight specified, including details
of construction relative to materials, dimensions of individual
components, profiles, finishes, and glazing light transmission and
thermal characteristics.

C. Shop drawings showing fabrication and installation of skylights,
including plans, elevations, sections, details of components, and
attachments to other units of work.

1.05 [QUALITY ASSURANCE]{.underline}

A. [Fire-Test-Response Characteristics]{.underline}: Provide plastic
sheets identical to those tested for the following fire-test-response
characteristics, per ASTM test method indicated below, by UL or other
testing and inspecting agencies acceptable to authorities having
jurisdiction. Identify plastic sheets with appropriate markings of
applicable testing and inspecting organization.

1\. Self-Ignition Temperature: 650 deg F (343.33 deg C) or greater when
tested per ASTM D 1929 on plastic sheets in the thickness intended for
use.

2\. Smoke density of 75 or less when tested per ASTM D 2843 on plastic
sheets in the thickness intended for use.

3\. Relative-Burning Characteristics: As follows, when tested per ASTM D
635:

a\. Acrylic: Burning rate of 2.5 inches per minute or less when tested
on plastic glazing indicated below with a nominal thickness of 0.060
inch or the thickness intended for use.

B. All materials used shall not contain asbestos fibers or lead.

1.06 [WARRANTY]{.underline}

A. [General]{.underline}: Warranties specified in this Section shall not
deprive the Owner of other rights the Owner may have under other
provisions of the Contract Documents and shall be in addition to and run
concurrent with other warranties made by the Contractor under
requirements of the Contract Documents.

B. [Skylight Warranty]{.underline}: Provide written warranty signed by
manufacturer, agreeing to repair or replace work that exhibits defects
in materials or workmanship and guaranteeing weathertight and leak-free
performance. \"Defects\" is defined as uncontrolled leakage of water and
abnormal aging or deterioration.

1\. Warranty Period: 5 years from date of Substantial Completion.

C. [Plastic Warranty]{.underline}: Provide written warranty signed by
manufacturer agreeing to repair or replace work that has or develops
defects in the plastic. \"Defects\" is defined as abnormal aging or
deterioration.

1\. Warranty Period for Acrylic: 5 years from date of Substantial
Completion against yellowing.

D. [Finish Warranty]{.underline}: Provide written warranty signed by
manufacturer agreeing to repair or replace work with finish defects.
\"Defects\" is defined as peeling, chipping, chalking, fading, abnormal
aging or deterioration, and failure to perform as required.

1\. Warranty Period for Anodized Finish: 1 year from date of Substantial
Completion for film integrity.

PART 2 - PRODUCTS

2.01 [MANUFACTURERS]{.underline}

A. [Manufacturers]{.underline}: Subject to compliance with requirements,
provide products by one of the following:

APC Corporation.

Bilco Company, The.

Bristolite Skylights.

Dawn Products Company.

Dur-Red Products.

Cadillac/Faulkner Plastics, Inc.

Fiore Skylights, Inc.

Fox Lite, Inc.

Hillsdale Industries, Inc.

Naturalite/EPI Skylight Systems.

O\'Keeffe\'s, Inc.

Plasteco, Inc.

Plasticrafts, Inc.

Regal Plastics Supply Company.

Skyline Products, Inc.

Sunglo Skylight Products.

Wasco Products, Inc.

2.02 [MATERIALS]{.underline}

A. [Aluminum Sheets]{.underline}: ASTM B 209 for Alclad alloy 3005-H25
or alloy and temper required to suit forming operations and finish
requirements. Mill finish unless indicated otherwise.

B. [Extruded Aluminum]{.underline}: ASTM B 221 alloy 6063-T52 or alloy
and temper required to suit structural and finish requirements. Mill
finish unless indicated otherwise.

C. [Plastic Sheets]{.underline}: Monolithic, formable, transparent
(colorless and tinted) or translucent (white) sheets with good weather
and impact resistance.

1\. Acrylic: ASTM D 4802, thermoformable, cast or continuous-cast
acrylic (methacrylate), Category C-1 or C-2, Type UVA (formulated with
ultraviolet absorber), with Finish 1 (smooth or polished), unless
otherwise indicated.

D. [Insulation]{.underline}: Manufacturer\'s standard rigid or semirigid
glass-fiber board of thicknesses indicated.

E. [Fasteners]{.underline}: Same metal as metals being fastened, or
nonmagnetic stainless steel or other noncorrosive metal as recommended
by manufacturer. Match finish of exposed fasteners with finish of
material being fastened.

F. [Bituminous Coating]{.underline}: SSPC-Paint 12, solvent-type,
bituminous mastic, nominally free of sulfur and containing no asbestos
fibers, compounded for 15-mil dry film thickness per coating.

G. [Mastic Sealant]{.underline}: Polyisobutylene; nonhardening,
nonskinning, nondrying, nonmigrating sealant.

H. [Elastomeric Sealant]{.underline}: Generic type recommended by unit
manufacturer that is compatible with joint surfaces. ASTM C 920; Type S;
Grade NS; Class 25; and Uses NT, G, A, and (as applicable to joint
substrates indicated) O.

I. [Roofing Cement]{.underline}: ASTM D 4586, nonasbestos-fibrated,
asphalt cement designed for trowel application or other adhesive
compatible with roofing system.

2.03 [FINISHES]{.underline}

A. [General]{.underline}: Comply with NAAMM \"Metal Finishes Manual\"
recommendations for application and designations of finishes.

B. Finish designations prefixed by AA conform to the system for
designating aluminum finishes established by the Aluminum Association.

C. [Class I, Clear-Anodized Finish]{.underline}: AA-C22A41 (Chemical
Finish: etched, medium matte; Anodic Coating: Class I Architectural,
clear film thicker than 0.7 mil) complying with AAMA 607.1.

2.04 [PLASTIC SKYLIGHT UNITS]{.underline}

A. [General]{.underline}: Factory-assembled unit consisting of plastic
glazing, extruded aluminum glazing retainer, gasketing, inner frame that
may be incorporated into the curb, and integral curb with self-contained
roof flashing flanges.

B. [Curb]{.underline}: Self-flashing, self-supporting double-wall,
formed or extruded (or combination) aluminum curb, minimum 0.040-inch
wall thickness, enclosing minimum 1-inch glass-fiber board (or
equivalent) insulation and with minimum 3-inch roof flanges, with welded
or sealed mechanical joints at corners.

1\. Height: Minimum 8 inches above roofings.

2\. Taper: Where roof deck slopes more than 1/4 inch per foot, provide
tapered curb heights to match slope and result in level dome
installation.

C. [Condensation Control]{.underline}: Fabricate skylight units with
integral internal gutters and nonclogging weeps to collect and dispose
of condensation.

D. [Thermal Break]{.underline}: Fabricate skylight units with thermal
barrier separating interior metal framing from materials exposed to
outside temperature.

E. [Shape and Size]{.underline}: Square, 36-by-36-inch inside curb.

F. [Glazing]{.underline}: Thermoformed acrylic.

1\. Sheet Thicknesses: Provide glazing plastic sheet thickness required
for 40 lbf per sq. ft. positive (external) loading and 20 lbf per sq.
ft. negative or uplift (internal) loading as recommended by the skylight
manufacturer for unit size and shape.

2\. Profile: Double dome, 25 percent rise.

a\. Outer Glazing Color: Colorless, transparent acrylic, 92 percent
visible light transmittance.

b\. Inner Glazing Color: White, No. 2067, translucent acrylic, 72
percent visible light transmittance.

3\. Glazing Gaskets: Manufacturer\'s standard glazing system of EPDM or
neoprene, closed-cell sponge neoprene, or EPDM, or of partially
vulcanized butyl tape or liquid-applied elastomeric sealant.

PART 3 - EXECUTION

3.01 [INSTALLATION]{.underline}

A. [General]{.underline}: Comply with manufacturer\'s instructions and
recommendations. Coordinate with installation of roof deck and other
substrates to receive skylight units. Coordinate with installation of
vapor barriers, roof insulation, roofing, and flashing as required to
assure that each element of the work performs properly and that combined
elements are waterproof and weathertight. Anchor units securely to
supporting structural substrates, adequate to withstand lateral and
thermal stresses as well as inward and outward loading pressures.

B. [Isolation]{.underline}: Where metal surfaces of units are to be
installed in contact with incompatible metal or corrosive substrates,
including wood, apply bituminous coating on concealed metal surfaces, or
provide another permanent separation.

C. [Flange Seals]{.underline}: Except as otherwise indicated, set
flanges of accessory units in a thick bed of roofing cement to form a
seal.

D. [Cap Flashing]{.underline}: Where cap flashing is required as
component of the skylight, install to provide an adequate waterproof
overlap with roofing or roof flashing (as counterflashing). Seal with
thick bead of mastic sealant, except where overlap is indicated to be
left open for ventilation.

3.02 [CLEANING AND PROTECTION]{.underline}

A. Clean exposed metal and plastic surfaces according to manufacturer\'s
instructions. Touch up damaged metal coatings.

B. Clean and polish plastic skylight units, inside and out, not more
than 5 days prior to date of substantial completion.

END OF SECTION