Technical Specifications

Dow Building Solutions
2.7.2 “B” Chemical, POLYOL
If the “B” chemical spills from the tank, hose, or INSTAFLO Gun,
wear all PPE, dike and isolate the spill area. Keep unnecessary
and unprotected personnel from entering the area. Soak up the
residue from the surface with soap and water. Discard in accor-
dance with federal, state, and local regulations.
2.8 Cautions
2.8.1 Storage Temperature
Recommended storage temperature:
60°– 80°F (16°–27°C).
Storage below 60°F (16°C) is not recommended.
Do not store at temperatures above 120°F (49°C).
2.8.2 Building Codes
In many areas, building codes may restrict the use of cellular
plastics or polyurethane foam in exposed, interior finishing
material applications. Under certain application code, the use of
these materials may be prohibited. The foam produced by this
product is organic and may constitute a fire hazard if improperly
applied. Consult local building codes.
2.8.3 Surface Temperature Restrictions
Polyurethane foam should not be used in direct contact with
chimneys, heat vents, steam pipes, or other surface areas that
exceed 240°F (116°C). The foam should not be left exposed or
inadequately protected for both interior and exterior finishing
materials. It is strongly recommended in all applications that the
foam be protected by approved facings and coatings.
2.8.4 Open Flame / Spark Source
Do not smoke or operate the system in close proximity
to an open flame or spark source. Ensure pilot lights are off.
Welding on or near cured polyurethane foam requires special
precautions. Consult The Dow Chemical Company for instructions.
2.8.5 Excessive Foam Dispensing
Do not apply excessive thicknesses at one time as this may result
in spontaneous combustion. For thickness greater than two
inches of cured foam, dispense foam in multiple layers, allowing
the heat from foaming to dissipate between sprayings.
2.8.6 Isocyanate contamination
Isocyanate and water do not mix, and this can happen even from
the water in the air. The material will solidify and then the gun and
hose will be unusable. The best thing to do is to take care of the
guns and hoses by using the entire kit within 30 days of opening.
WARNING: Water reacts aggressively with isocyanate (“A” chemi-
cal/ISO). Reactions within a confined space such as within a hose
may present a safety concern. Even small amounts of water vapor
may cause a blockage or an adverse reaction. Water carried within
the polyol (“B” chemical/POLY) hose to the point where blending
with isocyanate occurs must be avoided.
2.8.7 Confined Space
When preparing a site for spray foam, all considerations for
potential confined spaces must be taken and all OSHA require-
ments must be met if applicable.
2.9 Training
Dow does not recommend use of FROTHPAK
™
Spray Foam
Insulation and Sealant Kits without having completed the OSHA
requirements for respiratory protection (i.e. routine health exams
and fit testing, cartridge change out schedule, required OSHA
documentation), having completed review of the instructions
herein, and having reviewed the Safe Use and Handling presenta-
tions available at: http://building.dow.com/en-us/
educationtraining#all
Dow recommends additional training provided by:
- Spray Polyurethane Foam Alliance http://www.sprayfoam.org
- (CPI) of the AmericanChemistry Council http://polyurethane.
americanchemistry.com/About-CPI
For hands on training information contact:
Dow at: www.sprayfoamatdow.com1866583BLUE (2583)
(technical support) 18002322436 (sales information)
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