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SECTION 08620
UNIT SKYLIGHTS
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.
15. Inner Dome Color: Colorless.
16. Inner Dome Color: White.
17. Frame Finish: Manufacturer's standard, mill finish.
18. Frame Finish: Clear anodized.
19. Frame Finish: Bronze anodized.
20. Frame Finish: Polyester baked enamel.
21. Frame Finish: Fluoropolymer.
22. Size: As indicated on drawings.
23. Size: __________, outside curb dimension.
D. Skylight Type ___: Insulated curb type.
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.
17. Inner Dome Color: Colorless.
18. Inner Dome Color: White.
19. Frame Finish: Manufacturer's standard, mill finish.
20. Frame Finish: Clear anodized.
21. Frame Finish: Bronze anodized.
22. Frame Finish: Polyester baked enamel.
23. Size: As indicated on drawings.
24. Size: __________, outside curb dimension.
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.
12. Inner Dome Color: Colorless.
13. Inner Dome Color: White.
14. Frame Finish: Manufacturer's standard, mill finish.
15. Frame Finish: Clear anodized.
16. Frame Finish: Bronze anodized.
17. Frame Finish: Polyester baked enamel.
18. Size: As indicated on drawings.
19. Size: __________, outside curb dimension.
F. Skylight Type ___: Louvered curb type.
1. Curb and Frame: 0.072 inch (1.8 mm) extruded
aluminum, with condensate gutter and sufficient
drainage slots to carry all moisture to the outside.
2. Fixed aluminum louvers on all 4 sides of curb.
3. Dome Retaining Angle: 0.065 inch (1.6 mm) extruded
aluminum, with butyl glazing tape.
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.
12. Inner Dome Color: Colorless.
13. Inner Dome Color: White.
14. Frame Finish: Manufacturer's standard, mill finish.
15. Frame Finish: Clear anodized.
16. Frame Finish: Bronze anodized.
17. Frame Finish: Polyester baked enamel.
18. Frame Finish: Fluoropolymer.
19. Size: As indicated on drawings.
20. Size: __________, outside curb dimension.
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.
20. Inner Glazing Color: Colorless.
21. Inner Glazing Color: White.
22. Frame Finish: Manufacturer's standard, mill finish.
23. Frame Finish: Clear anodized.
24. Frame Finish: Bronze anodized.
25. Frame Finish: Polyester baked enamel.
26. Frame Finish: Fluoropolymer.
27. Size: As indicated on drawings.
28. Size: __________, outside curb dimension.
29. Provide factory-assembled units for sizes up to 20
feet (6100 mm) long and outside curb span of 87
inches (2210 mm) or less.
H. Skylight Type ___: Ridge type, for mounting on separate
curb.
1. Frame: 0.078 inch (2.0 mm) extruded aluminum with
condensate gutter and weep holes to carry all
moisture to the outside.
2. Glazing Retaining Angle: 0.062 inch (1.6 mm)
extruded aluminum.
3. Rafters: 0.080 inch (2.0 mm) extruded aluminum with
manufacturer's standard glazing seals.
4. Type: Single glazed.
5. Type: Double glazed.
6. Glazing: Acrylic plastic.
7. Outer Glazing Color: Colorless.
8. Outer Glazing Color: White.
9. Outer Glazing Color: Bronze.
10. Outer Glazing Color: Grey.
NOTE ** Delete the following two paragraphs if single dome
skylight has been specified. Otherwise, delete one
of the two paragraphs.
11. Inner Glazing Color: Colorless.
12. Inner Glazing Color: White.
13. Frame Finish: Manufacturer's standard, mill finish.
14. Frame Finish: Clear anodized.
15. Frame Finish: Bronze anodized.
16. Frame Finish: Polyester baked enamel.
17. Size: As indicated on drawings.
18. Size: __________, outside curb dimension.
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.
14. Frame Finish: Manufacturer's standard, mill finish.
15. Size: As indicated on drawings.
16. Size: __________, outside curb dimension.
J. Skylight Type ___: Cluster type, for mounting on
separate curbs and intermediate supports.
1. Frame: 0.078 inch (2.0 mm) extruded aluminum, with
condensate gutter and weep holes to carry all
moisture to the outside.
2. Rafters: 0.080 inch (2.0 mm) extruded aluminum with
manufacturer's standard glazing seals, sloped at 1/4
inch per foot (1:48), minimum.
3. Glazing Retaining Angle: 0.078 inch (2.0 mm)
extruded aluminum.
4. Type: Single dome.
5. Type: Double dome.
6. Type: Pyramid single dome.
7. Type: Pyramid double dome.
8. Domes: Acrylic plastic glazing.
9. Outer Dome Color: Colorless.
10. Outer Dome Color: White.
11. Outer Dome Color: Bronze.
12. Outer Dome Color: Grey.
NOTE ** Delete the following two paragraphs if single dome
skylight has been specified. Otherwise, delete one
of the two paragraphs.
13. Inner Dome Color: Colorless.
14. Inner Dome Color: White.
15. Frame Finish: Manufacturer's standard, mill finish.
16. Frame Finish: Clear anodized.
17. Frame Finish: Bronze anodized.
18. Frame Finish: Polyester baked enamel.
19. Frame Finish: Fluoropolymer.
20. Size: As indicated on drawings.
21. Size: __________, outside curb dimension.
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.
END OF SECTION
