Dow Perimeter Sealing/SPF Roof Repair - Manual

FROTH-PAK ™ 200 Foam Sealant
is a portable, two-component, spray
polyurethane foam dispensing system
for air sealing, insulation and moisture
management around the building
envelope. Reducing air leakage is
critical for enhancing building envelope
performance. Depending on the
construction details, often a source
of air leakage is around the perimeter
of the building between the roof deck
and parapet. Sealing this area during
construction can potentially reduce
costly repairs later, as well as improve
building performance.
G E T T I N G R E A D Y
MATERIALS AND EQUIPMENT
• FROTH-PAK ™ 200 Foam Sealant Kit
complete with gun/hose assembly,
dispensing nozzles, petroleum jelly
packet and operating instructions
• Protective wear, including goggles
or safety glasses, gloves and
clothing, and respiratory protection
• Roofing knife or handsaw
• 10-12 mil polyethylene
• 5/8" to 3/4" plywood if repairing
(larger than area to be repaired)
• Paintbrush or roller
• Protective roof coating (similar or
compatible to originally applied
coating)
S A F E T Y A N D
C O N D I T I O N S O F U S E
• Read the instructions and Material
Safety Data Sheets carefully before
use.
• FROTH-PAK ™ Polyurethane Spray
Foam contains isocyanate, hydro-
fluorocarbon blowing agent and
polyol. Do not breathe vapor or mist.
Use only in well-ventilated areas or
with proper respiratory protection.
Supplied air or an approved air-
purifying respirator equipped with
an organic vapor sorbent and a
particle filter may be required to
maintain exposure levels below
ACGIH, OSHA, WEEL or other
applicable limits. For situations
where the atmospheric levels may
exceed the level for which an air-
purifying respirator is effective, use
a positive-pressure, air-supplying
respirator (air line or self-contained
breathing apparatus).
insulations have surface burning char-
acteristics of
≤75 flame spread index
and
≤450 smoke developed index. The
application of the product is limited to
an area of 8" wide x 2" thick.
Note: For gaps less than 1/2", use
GREAT STUFF PRO ™ Gaps & Cracks
Insulating Foam Sealant or equivalent.
Note: During application, the foam
exerts force as it expands. Monitor
the amount of foam installed to avoid
overfilling restricted spaces.
1. Apply foam 2" thick or less between
the roof deck and parapet (Figure 1).
2. Once the foam has cured (approxi-
mately 5 minutes), remove any
overspray with a roofing knife. If
additional shaping is required, cut
the cured foam with a handsaw.
®™Trademark of The Dow Chemical Company (“Dow”) or an affiliated company of Dow
I N S T A L L A T I O N I N F O R M A T I O N . C O M M E R C I A L . U N I T E D S T A T E S
• Isocyanate is irritating to the eyes,
skin and respiratory system, and
may cause sensitization by inhala-
tion or skin contact.
• FROTH-PAK ™ Foam will adhere to
most surfaces and skin. Do not get
foam on skin. Wear gloves, goggles
or safety glasses, and protective
clothing. Cured foam must be
mechanically removed or allowed to
wear off in time.
• The contents are under pressure.
• Store FROTH-PAK
™ 200 Foam
Sealant at 75°F. Do not store at
temperatures above 120°F.
• Application temperature:
60°F - 90°F.
• Avoid prolonged storage in direct
sunlight or near heat sources.
PREPARE WORK AREA
1. Remove all contaminants (water, oil,
dust, dirt, debris, old sealants, etc.)
that could affect the adhesion
between the roof deck, parapet and
foam. If in doubt, conduct an adhe-
sion test, waiting at least 1 hour to
assess the bond.
2. Check material compatibility.
FROTH-PAK ™ Foam Sealant is not
compatible with silicone coatings.
Remove any silicone coating at least
6" from the area to be sprayed.
Note: Always check with local
building officials and codes for addi-
tional requirements prior to using
FROTH-PAK
™ Foam Sealant.
3. Follow the operating instructions
included in the FROTH-PAK ™
Kit packaging. Contact your local
Dow representative or visit
www.dowbuildingsolutions.com for
more information.
APPLICATION: SEAL PERIMETER
(DURING CONSTRUCTION)
FROTH-PAK ™ Foam Sealant can be
easily installed around the perimeter
on the exterior side of the roofing
assembly. Install the foam prior to
installing the membrane or insulation.
FROTH-PAK
™ Foam Sealant meets the
requirements for use on the exterior of
a commercial roof per Section 2603 of
the International Building Code. The
code requires that foam plastic
Figure 1
APPLICATION: REPAIR PARAPET
1. If the area to be repaired has been
previously painted, scrape away all
loose or poorly adhered paint.
Conduct an adhesion test if any
previously painted surfaces are
involved in the repair.
2. If the area is wet, let the surface dry
completely. Any additional moisture
may cause premature curing and
limit work time of the FROTH-PAK
™
Foam Sealant.
3. Check the underlying substrate for
soundness and repair, if applicable.
Perimeter Seal/Parapet Repair Using
FROTH-PAK ™ 200 Foam Sealant