HomeMy WebLinkAbout08830.pdf BICKFORD OF CARMEL, IN 12/12/2012
MIRRORS 08830 - 1
SECTION 08830 - MIRRORS
PART 1 - GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including General and Supplementary
Conditions and Division 1 Specification Sections, apply to this Section.
1.2 SUMMARY
A. Section includes the following types of silvered flat glass mirrors:
1. Film-backed Tempered glass mirrors qualifying as safety glazing.
B. Related Sections:
1. Division 8 Section "Glazing" for glass with reflective coatings used for vision and spandrel
lites.
2. Division 10 Section "Toilet and Bath Accessories" for metal-framed mirrors.
1.3 SUBMITTALS
A. Product Data: For each type of product indicated.
1. Mirrors. Include description of materials and process used to produce each type of
silvered flat glass mirror specified that indicates sources of glass, glass coating
components, edge sealer, and quality-control provisions.
B. Shop Drawings: Include mirror elevations, edge details, mirror hardware, and attachments to
other work.
C. Maintenance Data: For mirrors to include in maintenance manuals.
D. Warranty: Sample of special warranty.
1.4 QUALITY ASSURANCE
A. Installer Qualifications: A qualified installer who employs glass installers for this Project who are
certified under the National Glass Association's Certified Glass Installer Program.
B. Source Limitations for Mirrors: Obtain mirrors from single source from single manufacturer.
C. Source Limitations for Mirror Accessories: Obtain mirror glazing accessories from single
source.
D. Glazing Publications: Comply with the following published recommendations:
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1. GANA's "Glazing Manual" unless more stringent requirements are indicated. Refer to
this publication for definitions of glass and glazing terms not otherwise defined in this
Section or in referenced standards.
2. GANA Mirror Division's "Mirrors, Handle with Extreme Care: Tips for the Professional on
the Care and Handling of Mirrors."
E. Safety Glazing Products: For film-backed tempered mirrors, provide products complying with
testing requirements in 16 CFR 1201 for Category II materials.
1.5 DELIVERY, STORAGE, AND HANDLING
A. Protect mirrors according to mirror manufacturer's written instructions and as needed to prevent
damage to mirrors from moisture, condensation, temperature changes, direct exposure to sun,
or other causes.
B. Comply with mirror manufacturer's written instructions for shipping, storing, and handling mirrors
as needed to prevent deterioration of silvering, damage to edges, and abrasion of glass
surfaces and applied coatings. Store indoors.
1.6 PROJECT CONDITIONS
A. Environmental Limitations: Do not install mirrors until ambient temperature and humidity
conditions are maintained at levels indicated for final occupancy.
1.7 WARRANTY
A. Special Warranty: Manufacturer's standard form in which mirror manufacturer agrees to replace
mirrors that deteriorate within specified warranty period. Deterioration of mirrors is defined as
defects developed from normal use that are not attributed to mirror breakage or to maintaining
and cleaning mirrors contrary to manufacturer's written instructions. Defects include
discoloration, black spots, and clouding of the silver film.
1. Warranty Period: Five years from date of Substantial Completion.
PART 2 - PRODUCTS
2.1 SILVERED FLAT GLASS MIRRORS
A. Glass Mirrors, General: ASTM C 1503; manufactured using copper-free, low-lead mirror
coating process.
B. Clear Glass: Mirror Quality; ultraclear (low-iron) float glass with a minimum 91 percent visible
light transmission.
1. Nominal Thickness: 5.0 mm.
C. Tempered Clear Glass: Mirror Glazing Quality, for blemish requirements; and comply with
ASTM C 1048 for Kind FT, Condition A, tempered float glass before silver coating is applied.
1. Nominal Thickness: 5.0 mm.
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2.2 MISCELLANEOUS MATERIALS
A. Setting Blocks: Elastomeric material with a Shore, Type A durometer hardness of 85, plus or
minus 5.
B. Edge Sealer: Coating compatible with glass coating and approved by mirror manufacturer for
use in protecting against silver deterioration at mirrored glass edges.
C. Mirror Mastic: An adhesive setting compound, asbestos-free, produced specifically for setting
mirrors and certified by both mirror manufacturer and mastic manufacturer as compatible with
glass coating and substrates on which mirrors will be installed.
D. Film Backing for Safety Mirrors: Film backing and pressure-sensitive adhesive; both compatible
with mirror backing paint as certified by mirror manufacturer.
2.3 MIRROR HARDWARE
A. Mirror Bottom Clips: As indicated.
B. Mirror Top Clips: As indicated.
C. Fasteners: Fabricated of same basic metal and alloy as fastened metal and matching it in
finished color and texture where fasteners are exposed.
D. Anchors and Inserts: Provide devices as required for mirror hardware installation. Provide
toothed or lead-shield expansion-bolt devices for drilled-in-place anchors. Provide galvanized
anchors and inserts for applications on inside face of exterior walls and where indicated.
2.4 FABRICATION
A. Mirror Sizes: To suit Project conditions, and before tempering, cut mirrors to final sizes and
shapes.
B. Cutouts: Fabricate cutouts before tempering for notches and holes in mirrors without marring
visible surfaces. Locate and size cutouts so they fit closely around penetrations in mirrors.
C. Mirror Edge Treatment: Rounded polished.
1. Seal edges of mirrors with edge sealer after edge treatment to prevent chemical or
atmospheric penetration of glass coating.
2. Require mirror manufacturer to perform edge treatment and sealing in factory
immediately after cutting to final sizes.
D. Film-Backed Safety Mirrors: Apply film backing with adhesive coating over mirror backing paint
as recommended in writing by film-backing manufacturer to produce a surface free of bubbles,
blisters, and other imperfections.
PART 3 - EXECUTION
3.1 EXAMINATION
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A. Examine substrates, over which mirrors are to be mounted, with Installer present, for
compliance with installation tolerances, substrate preparation, and other conditions affecting
performance of the Work.
B. Verify compatibility with and suitability of substrates, including compatibility of mirror mastic with
existing finishes or primers.
C. Proceed with installation only after unsatisfactory conditions have been corrected and surfaces
are dry.
3.2 PREPARATION
A. Comply with mastic manufacturer's written installation instructions for preparation of substrates,
including coating substrates with mastic manufacturer's special bond coating where applicable.
3.3 INSTALLATION
A. General: Install mirrors to comply with mirror manufacturer's written instructions and with
referenced GANA publications. Mount mirrors accurately in place in a manner that avoids
distorting reflected images.
B. Provide a minimum air space of 1/8 inch (3 mm) between back of mirrors and mounting surface
for air circulation between back of mirrors and face of mounting surface.
C. Wall-Mounted Mirrors: Install mirrors with mastic and mirror hardware. Attach mirror hardware
securely to mounting surfaces with mechanical fasteners installed with anchors or inserts as
applicable. Install fasteners so heads do not impose point loads on backs of mirrors.
1. Mirror Clips: Place a felt or plastic pad between mirror and each clip to prevent spalling
of mirror edges. Locate clips so they are symmetrically placed and evenly spaced.
2. Install mastic as follows:
a. Apply barrier coat to mirror backing where approved in writing by manufacturers of
mirrors and backing material.
b. Apply mastic to comply with mastic manufacturer's written instructions for coverage
and to allow air circulation between back of mirrors and face of mounting surface.
c. After mastic is applied, align mirrors and press into place while maintaining a
minimum air space of 1/8 inch (3 mm) between back of mirrors and mounting
surface.
3.4 CLEANING AND PROTECTION
A. Protect mirrors from breakage and contaminating substances resulting from construction
operations.
B. Do not permit edges of mirrors to be exposed to standing water.
C. Maintain environmental conditions that will prevent mirrors from being exposed to moisture from
condensation or other sources for continuous periods of time.
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D. Wash exposed surface of mirrors not more than four days before date scheduled for inspections
that establish date of Substantial Completion. Wash mirrors as recommended in writing by
mirror manufacturer.
END OF SECTION 08830