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DIVISION 9
FINISHES
SECTION 09 91 23
PAINTING
PART 1 - GENERAL
1.1 RELATED DOCUMENTS
A. Drawings and general provisions of the Contract, including
General and SupplementaryConditions and Division 01 Specification
Sections, apply to this Section.
1.2 SUMMARY
A. This Section includes surface preparation and the application
of paint systems on the followinginterior substrates:
1. Concrete masonry units (CMU).
2. Steel.3. Non-Ferrous metals.4. Wood.5. Gypsum board.6.
Plaster.7. Concrete.8. Structural Glazed Tile9. Ceramic Tile
B. Related Sections include the following:
1. Division 03 Section Cast in Place Concrete.2. Division 06
Sections for shop priming carpentry with primers specified in this
Section.3. Division 08 Sections for factory priming windows and
doors with primers specified in this
Section.
1.3 SUBMITTALS
A. Product Data: For each type of product indicated.
B. Samples for Initial Selection: For each type of topcoat
product indicated.
C. Samples for Verification: For each type of paint system and
in each color and gloss of topcoatindicated.
1. Submit Samples on rigid backing, 6 inches square.2. Step
coats on Samples to show each coat required for system.3. Label
each coat of each Sample.4. Label each Sample for location and
application area.
D. Product List: For each product indicated, include the
following:
1. Cross-reference to paint system and locations of application
areas. Use samedesignations indicated on Drawings and in
schedules.
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2. Printout of current "MPI Approved Products List" for each
product category specified inPart 2, with the proposed product
highlighted.
1.4 QUALITY ASSURANCE
A. Adequate Lighting: General Contractor to provide a light
source with a minimum 45-50footcandles in areas requiring interior
painting.
B. Mockups: Apply benchmark samples of each paint system
indicated and each color and finishselected to verify preliminary
selections made under sample submittals and to demonstrateaesthetic
effects and set quality standards for materials and execution.
1. Architect will select one surface to represent surfaces and
conditions for application ofeach paint system specified in Part
3.
a. Wall and Ceiling Surfaces: Provide samples of at least 100
sq. ft.b. Other Items: Architect will designate items or areas
required.
2. Apply benchmark samples after adequate lighting (refer to 1.4
A above) and otherenvironmental services have been activated.
3. Final approval of color selections will be based on benchmark
samples.
a. If preliminary color selections are not approved, apply
additional benchmarksamples of additional colors selected by
Architect at no added cost to Owner.
4. Approved mockups may become part of the completed Work.
1.5 DELIVERY, STORAGE, AND HANDLING
A. Store materials not in use in tightly covered containers in
well-ventilated areas with ambienttemperatures continuously
maintained at not less than 45 degrees F.
1. Maintain containers in clean condition, free of foreign
materials and residue.2. Remove rags and waste from storage areas
daily.
1.6 PROJECT CONDITIONS
A. Apply paints only when temperature of surfaces to be painted
and ambient air temperatures arebetween 50 and 95 degrees F.
B. Do not apply paints when relative humidity exceeds 85
percent; at temperatures less than 5degrees F above the dew point;
or to damp or wet surfaces. Applications may be continuedduring
inclement weather within the temperature limits specified by the
paint manufacturerduring application and drying periods.
C. Do not apply paint to areas where dust is being
generated.
D. Cast in place concrete columns must be prepared with only
minimum defects prior to applyingfinish coating system.
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3. Wood: 15 percent.4. Gypsum Board: 12 percent.5. Plaster: 12
percent.
C. Verify suitability of substrates, including surface
conditions and compatibility with existingfinishes and primers.
D. Begin coating application only after unsatisfactory
conditions have been corrected and surfacesare dry.
1. Beginning coating application constitutes Contractor's
acceptance of substrates andconditions.
3.2 PREPARATION
A. Comply with manufacturer's written instructions and
recommendations in "MPI ArchitecturalPainting Specification Manual"
applicable to substrates indicated.
B. Remove plates, machined surfaces, and similar items already
in place that are not to bepainted. If removal is impractical or
impossible because of size or weight of item,
providesurface-applied protection before surface preparation and
painting.
1. After completing painting operations, use workers skilled in
the trades involved to reinstallitems that were removed. Remove
surface-applied protection if any.
2. Do not paint over labels of independent testing agencies or
equipment name,identification, performance rating, or nomenclature
plates.
C. Clean substrates of substances that could impair bond of
paints, including dirt, oil, grease, andincompatible paints and
encapsulants.
1. Remove incompatible primers and reprime substrate with
compatible primers as requiredto produce paint systems
indicated.
D. Concrete, Masonry, and Cement Stucco:
1. Remove release agents, curing compounds, efflorescence, and
chalk.2. Scrape or grind fins and protrusions flush with the
surface.3. Patch holes and cracks flush with the surface using
Portland Cement grout or an
approved patching material.4. Fill concrete masonry
unit/concrete surfaces with block filler, tinted final color and
texture.5. Do not paint surfaces if moisture content or alkalinity
of surfaces to be painted exceeds
that permitted in manufacturer's written instructions.
E. Steel Substrates: Remove rust and loose mill scale. Clean
using methods recommended inwriting by paint manufacturer.
F. Galvanized-Metal Substrates: Remove grease and oil residue
from galvanized sheet metalfabricated from coil stock by mechanical
methods to produce clean, lightly etched surfaces thatpromote
adhesion of subsequently applied paints. Clean according to
SSPC-SP1 guidelines,then apply test patch to ensure adhesion of
paint. Use water based cleaners only if water baseddryfall is used
and solvent cleaners if alkyd dryfall is used.
G. Aluminum Substrates: Remove surface oxidation.
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H. Wood Substrates:
1. Scrape and clean knots, and apply coat of knot sealer before
applying primer.2. Sand surfaces that will be exposed to view, and
dust off.3. Prime edges, ends, faces, undersides, and backsides of
wood.4. After priming, fill holes and imperfections in the finish
surfaces with putty or plastic wood
filler. Sand smooth when dried.
I. Plaster and Gypsum Board Substrates:
1. Do not begin paint application until finishing compound or
plaster is dry and sandedsmooth.
2. Remove nibs and other protrusions by scraping flush with the
surface.3. Patch voids and cracks with spackling compound. Allow to
dry.4. Do not apply paint to plaster containing more than 15%
moisture.
3.3 APPLICATION
A. Apply paints according to manufacturer's written
instructions.
1. Use applicators and techniques suited for paint and substrate
indicated.2. Paint surfaces behind movable equipment and furniture
same as similar exposed
surfaces. Before final installation, paint surfaces behind
permanently fixed equipment orfurniture with prime coat only.
3. Paint front and backsides of access panels, removable or
hinged covers, and similarhinged items to match exposed
surfaces.
B. If undercoats or other conditions show through topcoat, apply
additional coats until cured filmhas a uniform paint finish, color,
and appearance.
C. Apply paints to produce surface films without cloudiness,
spotting, holidays, laps, brush marks,roller tracking, runs, sags,
ropiness, or other surface imperfections. Cut in sharp lines and
colorbreaks.
D. Sand and dust between each coat to remove defects.
E. Painted work:
1. Back prime all interior and exterior trim.2. Touch up hot
spots in plaster after first coat.3. Paint hollow metal doors prior
to installation of hardware. Finish door tops, bottoms, and
edges same as faces after they are fitted.
F. Stained finish:
1. Apply uniformly and wipe off excess as required.2. Where
items of millwork or cabinetry are not prefinished, interiors shall
be finished as
directed by Architect.
G. Epoxy coating:
1. Epoxy coating performed in strict compliance with
manufacturers application manual andrecommendations.
2. Items installed prior to epoxy coating:
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a. Floor and base: Terrazzo/Ceramic/Porcelain/Quarry tile.b.
Plastering and wallboard (walls and ceiling).c. Painting of ceiling
and walls to wainscot. Do not paint below wainscot line.
3. Items installed after epoxy coating is installed and
cured:
a. Resilient tile floor, carpet, base.b. Finish painting as
required.c. Caulking and sealant adjacent to epoxy coating.d. Door
and trim sealed, primed, and installed.
4. Film thickness: Surfaces scheduled to receive epoxy coating
shall be applied in two (2)coats.
H. Painting Mechanical and Electrical Work: Paint items exposed
in equipment rooms andoccupied spaces including, but not limited
to, the following:
1. Mechanical Work:
a. Uninsulated metal piping.b. Uninsulated plastic piping.c.
Pipe hangers and supports.d. Tanks that do not have factory-applied
final finishes.e. Visible portions of internal surfaces of metal
ducts, without liner, behind air inlets
and outlets.f. Duct or paintable equipmentg. Mechanical
equipment that is indicated to have a factory-primed finish for
field
painting.
I. Electrical Work: Electrical equipment that is indicated to
have a factory-primed finish for fieldpainting.
3.4 FIELD QUALITY CONTROL
A. Testing of Paint Materials: Owner reserves the right to
invoke the following procedure at anytime and as often as Owner
deems necessary during the period when paints are being
applied:
1. Owner will engage the services of a qualified testing agency
to sample paint materialsbeing used. Samples of material delivered
to Project site will be taken, identified, sealed,and certified in
presence of Contractor.
2. Testing agency will perform tests for compliance with product
requirements.3. Owner may direct Contractor to stop applying paints
if test results show materials being
used do not comply with product requirements. Contractor shall
remove noncomplying-paint materials from Project site, pay for
testing, and repaint surfaces painted withrejected materials.
Contractor will be required to remove rejected materials from
previously painted surfaces if, on repainting with complying
materials, the two paints areincompatible.
3.5 CLEANING AND PROTECTION
A. At end of each workday, remove rubbish, empty cans, rags, and
other discarded materials fromProject site.
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3. Finish-Coat Formulation: Formulated for gloss finish and
multicoat application.4. Game-Line and Marker Paint: Industrial
enamel compatible with finish coats and
recommended in writing by manufacturers of finish coats, and
paint for this use.5. Chemical Components: Provide products that
comply with the following limits for VOC
content when calculated according to 40 CFR 59, Subpart D (EPA
Method 24):
a. Floor Sealers and Finish Coats: VOC content of not more than
350 g/L.b. Game-Line and Marker Paint: VOC content of not more than
150 g/L.
F. Gypsum Board Substrates:
1. Latex System: MPI INT 9.2A.
a. Prime Coat: SW PrepRite 200 Latex Primer B28W200, one (1)
coat, 1-1.5mls dftper coat.
b. Topcoat: SW ProMar200 Latex Eggshell B20-220, two (2) 1.4mls
dft per coat.2. Epoxy System:
a. Prime Coat: SW HD Block Filler (Semigloss) B42W46b. Topcoat:
SW WB Epoxy BTO 200 (Semigloss) Series. Two (2) coats.
G. Concrete Substrates (Where indicated for seal):
1. Basis of Design Product: SW Armor Seal 1000.2. Equals by:
G&L Supplies1) Johnson Wax.
a) Scarify existing painted or sealed floor surface for
adhesion.
b) Apply test patch and examine for lifting.
c) Topcoat: Apply two (2) coats of colored sealer. Concrete to
becleaned and prepped according to manufacturers
recommendations.Add antislip aggregate to second coat in wet
areas.
H. Structural Glazed Tile, Ceramic Tile.a. Prime Coat: X1M 400 W
Primerb. Top Coat: Two (2) Coats WB Epoxy B70 Series
I. Cement Plaster Substrates:
1. New plaster:
a. Prime Coat: SW PrepRite Masonry Primer B28W300 series, one
(1) coat, 2mls dftper coat.
b. Top coat: SW ProMar 200 Latex Semigloss B31 series, two (2)
coats, 1.5 mls dftper coat.
2. Epoxy System:a. Prime Coat: SW HD Block Filler (Semigloss)
B42W46b. Topcoat: SW WB Epoxy BTO 200 (Semigloss) Series. Two (2)
coats.
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