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Architectural Specifications for WOOD
Note: Strict compliance to
manufacturer's coating thickness must be adhered to meet fire-rating
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 1-2-3, Kilz, or similar applied at
spreading rate recommended by manufacturer.
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.
FIRE BARRIER LATEX PRIMER/PAINT
Test Results - Wood Tests
Test: ASTM-84-05 (Class
"A" Rating Building Materials)
Equivalent tests: (UL-723, ANSI No. 2.5, NFPA No. 255;
and UBC 8-1 42-1)
Testing Agent: Intertek
Date: 3/02/06
Substrate: Douglas Fir
Method: Standard test method for surface burning
characteristics of building materials.
Parameters: Flame spread Index 10; Smoke developed Index
5.
Observations:
Char formed at :22 (min:sec). Ignition at :56 (min:sec) The intumescent coating
began to crack at 2:15 (min:sec).
Substrate ignited at 7:57 (min:sec).
Rating: The
National Fire Protection Association Life Safety Code 101, Section 6-5.3,
"Interior Wall and Ceiling Finish Classification"
Class "A" Rating
click here to download report (9 Pages PDF Format)
Test Results - Douglas Fir
ANSI/UL723 (Class "A"
Rating Building Materials)
Equivalent tests: NFPA No. 255; UBC 8-1-42-1; ASTM E-84)
Testing Agent: Underwriters Laboratory
Date: January 3, 2007
Substrate: Doug fir
Method: Each test was conducted in accordance with
Standard ANSI/UL723, ninth edition; dated August 29, 2003, "Test for Surface
Burning Characteristics of Building Materials" (ASTM E84).
Parameters:
Flame spread Index: 0; Smoke developed Index 10.
Rating: The
National Fire Protection Association Life Safety Code 101, Section 6-5.3,
"Interior Wall and Ceiling Finish Classification"
Class "A" Rating
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