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Architectural Specification
for
CONTEGO PASSIVE FIRE BARRIER LATEX
A water-based, thin film,
one-component latex fire barrier coating containing 56.2% solids, by weight, is
designed to protect various substrates by developing a thick char barrier
(intumescent layer) when exposed to high temperatures or flame.
PRODUCT CHARACTERISTICS:
The product is a white,
flat-finish coating with a nominal viscosity of 125 KU and a pH of 8.0 – 8.5.
APPLICATION EQUIPMENT:
The product can be applied with
an airless sprayer (recommended psi 1,200 – 2,400,
tip size 25 – 50, positive displacement) or by roller, brush, or mitt.
Recommended thickness depends on
the substrate and the level of protection needed. See test data for recommendations, or call
the manufacturer for technical assistance.
GENERAL:
The product polymerizes to all
tested substrates and accepts top coating with alkyd, acrylic, or latex paint without loss of fire protective qualities. The product meets
the following requirements for:
Wood @ various thicknesses (see
individual test reports)
·
ASTM E-84.98 (UL-723) Class A Flame Spread &
Smoke Production
·
UBC-26.3 – Thermal Barrier Test for Interior Foam
Plastic Systems.
·
UBC-26.2 – Thermal Barrier for both standard and HUD
applications.
·
NFPA-286 – Contribution to Room Combustibility.
·
Toxicity Data (Zero toxicity/No HAZMAT)
PROJECT CONDITIONS
Revise this Article if manufacturer's requirements
are more restrictive.
A.
Apply
waterborne paints only when temperatures of surfaces to be painted and surrounding
air are between 50 and 90 deg F (10
and 32 deg C).
Delete paragraph and subparagraph below for interior
applications not subject to inclement weather conditions.
B. Do not apply intumescent paints in snow, rain, fog, or mist; when relative humidity exceeds 85 percent; if temperature is less than 5 deg F (3 deg C) above the dew point; or to damp or wet surfaces.
INTERIOR INTUMESCENT FINISH
COATS
1.
Prime
Coat: Is not required, but if used,
factory-formulated Zinsser
2.
Intermediate
Coat: Intumescent-type, fire-retardant
paint applied at spreading rate of 20 mils wet using multiple coats to achieve
a total dry film thickness of 14 MILS (DFT).
3.
Finish Coat –
For color or sheen applied according to manufacturer’s recommendations.
EXAMINATION
Always retain this Article. Before starting, ensure that surfaces are in
proper condition to receive intumescent paint, or failure is possible.
C.
Examine
substrates, areas, and conditions, with Applicator present, for compliance with
requirements and other conditions affecting performance of work.
1.
Proceed with
application only after unsatisfactory conditions have been corrected and
surfaces to receive paint are thoroughly dry.
2.
Start of
painting will be construed as Applicator's acceptance of surfaces and
conditions within a particular area.
Before applying paint, consult manufacturer to
determine if there are potential problems with use of intumescent paints over
existing primers or previously applied coatings. Coordinating shop-applied primers with
intumescent paint is critical. If
problems exist, it may be necessary to provide barrier coats or to remove
existing material and reprime substrate.
D. Coordination of Work: Review other Sections in which primers are provided to ensure compatibility of the total intumescent paint system for various substrates. On Architect's request, furnish information on characteristics of finish materials to ensure use of compatible primers.
PREPARATION
Revise first paragraph and subparagraph below if
additional requirements are necessary to suit Project.
E.
General: Remove hardware, hardware accessories,
plates, machined surfaces, lighting fixtures, and similar items already
installed that are not to be painted. If
removal is impractical or impossible because of size or weight of item, provide
surface-applied protection before surface preparation and painting.
1.
Make sure the
surface of the foam is free of gouges, holes, exposed cells, and that the
surface is stable and not crumbling or deteriorated. If any such defects are found, repair them
prior to proceeding.
2.
After
completing painting operations in each space or area, reinstall items removed
using workers skilled in the trades involved.
F.
Cleaning: Before applying coatings or other surface
treatments, clean substrates of substances that could impair bond of
intumescent paint systems.
1.
Schedule
cleaning and painting application so dust and other contaminants will not fall
on wet, newly painted surfaces.
Always retain paragraph and subparagraphs below that
specify surface preparation. Proper
surface preparation is essential for satisfactory intumescent paint
performance. If necessary, revise requirements
to include special procedures requested by manufacturers or to suit Project.
G.
Surface
Preparation: Clean and prepare surfaces
to be painted according to manufacturers written instructions for each
particular substrate condition and as specified. Coordinating shop-applied
primers with finish coats is critical.
See "Coordination of Work" Paragraph in
"Examination" Article. If
compatibility problems develop, it may be necessary to provide barrier coats
over shop-applied primers or to remove primer and reprime
substrate.
Revise paragraph and subparagraphs below to suit
products specified.
H.
Material
Preparation: Mix and prepare materials
according to manufacturers written instructions.
1.
Maintain
containers used in mixing and applying paint in a clean condition, free of
foreign materials and residue.
2.
Stir material
before application to produce a mixture of uniform density, and as required
during application. Do not stir surface
film into material. If necessary, remove
surface film and strain material before using.
3.
Do not thin
or mix with other products.
Delete paragraph below if tinting is not
required. Different tints will show
through as topcoat erodes.
I.
Tinting: Tint each undercoat a lighter shade to
simplify identification of each coat when multiple coats of same material are
applied. Tint undercoats to match color
of finish coat, but provide sufficient differences in shade of undercoats to
distinguish each separate coat.
APPLICATION
Revise this Article to suit Project. Add special restrictions on application
methods if required.
J.
General: Apply intumescent paints according to
manufacturers written instructions. Use
applicators and techniques best suited for substrate and type of material being
applied.
Revise first subparagraph below if colors are not
indicated in a schedule.
1.
Do not paint
over dirt, rust, scale, grease, moisture, scuffed surfaces, or conditions
detrimental to forming a durable paint film.
2.
Provide finish
coats that are compatible with primers used.
3.
The term
"exposed surfaces" includes areas visible when permanent or built-in
fixtures and similar components are in place.
Extend coatings in these areas, as required, to maintain system
integrity and provide desired protection.
4.
Paint surfaces
behind movable equipment and furniture the same as similar exposed surfaces.
Application in subparagraph below limits intumescent
paint to door faces because activation of coating on edges may interfere with
door opening.
K.
Scheduling
Painting: Apply first coat to surfaces
that have been cleaned, pretreated, or otherwise prepared for painting as soon
as practicable after preparation and before subsequent surface deterioration.
1.
Film thickness
required is the same regardless of application method. Do not apply succeeding coats until previous
coat has cured as recommended by manufacturer.
If sanding is required to produce a smooth, even surface according to
manufacturer's written instructions.
2.
If undercoats,
stains, or other conditions show through the final coat of paint, apply
additional coats until paint film is of uniform finish, color, and
appearance. Give special attention to
ensure that edges, corners, crevices, and exposed fasteners receive a dry film
thickness equivalent to that of flat surfaces.
3.
Allow enough
time between successive coats to permit proper drying. Do not recoat surfaces until paint has dried
to where it feels firm, does not deform or feel sticky under moderate thumb
pressure, and where applying another coat of paint does not cause the undercoat
to loose adhesion or cause the finish to crack.
Insert restrictions or limits on using spray
equipment to suit Project.
L.
Application
Procedures: Apply coatings by brush,
roller, spray, or other applicators according to manufacturer's written
instructions.
1.
Spray
Equipment: Use airless spray equipment
with orifice size as recommended by manufacturer for material and texture
required. (See above).
M.
Minimum Coating
Thickness: Apply materials at not less
than manufacturer's recommended spreading rate for surface to be coated. Provide total dry film thickness of entire
system as recommended by manufacturer.
N.
Prime Coat: Before applying finish coats, apply a prime
coat, as recommended by manufacturer, to substrates required to be painted that
have not been prime coated by others.
Recoat primed and sealed surfaces where evidence of suction spots or
unsealed areas appears in the first coat.
O.
Produce a
smooth surface film using multiple
coats. Provide a finish free of
laps, runs, color irregularity, brush marks, orange peel, nail holes, or other
surface imperfections.
P.
Completed
Work: Match approved samples for texture
and coverage. Remove, refinish, or
repaint work not complying with specified requirements.
CLEANING AND PROTECTION
Q.
Cleanup: At the end of each workday, remove rubbish,
empty cans, rags, and other discarded materials from Project site.
Delete subparagraph below if final cleaning is not
done by painter.
1.
After
completing painting, clean glass and paint-spattered surfaces. Remove spattered paint by proper
methods. Be careful not to scratch or
otherwise damage adjacent finished surfaces.
R.
Provide
"Wet Paint" signs to protect newly painted finishes. After completing painting, remove temporary
protective wrappings provided by others to protect their work.
1.
After work of
other trades is completed, touch up and restore damaged or defaced
surfaces. Comply with PDCA P1.
END OF SECTION 09967Delete subparagraph below if continued application in inclement weather will not be permitted under any circumstances.
Manufactured
by Contego International, Inc.,
Complete test results. MSDS, Application Data and other information is available on the World Wide Web at http://www.contegointernational.com
