Feb. 2009
The information presented herein was prepared at BERRY PLASTICS CORPORATION (25 Forge Parkway Franklin, MA 02038) by qualied technical personnel. To Berry Plastics’ knowledge it is true and accurate.
However, the information and recommendations are furnished for these products with the understanding that the purchaser or user, as the case may be, will independently determine that the product is suitable for the
intended use, and that such use complies with all applicable federal, state and local laws and regulations. The data are submitted only for the user’s information and consideration, and do not constitute a warranty of
any kind (including but not limited to a warranty of merchantability or of tness for a particular purpose), or a representation for which BERRY PLASTICS assumes any legal responsibility.
INSTALLATION GUIDE - FIBERGLASS DUCT BOARD
324A PREMIUM FOIL TAPE
North American Insulation Manufacturers Association Fibrous Glass Residential Duct Construction Standard Third Edition, 2002
Section V Closure, 5-3 Closure - UL 181A, Part I (P) - Pressure sensitive aluminum foil tape
Surface Preparation: To obtain the best possible bond, the surface to which the tape will be applied should be clean of dust,
dirt, oil, grease, and moisture. Generally, wiping the surface with a clean lint-free rag or paper towl is sufcient.
The 2009, 2012, and 2015 International Energy Conservation Code (IECC) mandates the use of tapes listed and labeled in
accordance with Standard UL 181A and marked “181A-P” for pressure-sensitive tape. Check with local code authorities for
requirements specic to your municipality.
Application above 50 °F (10 °C):
Use tape a minimum width of 2 1/2" (64mm) wide for 1”
(25mm) duct board. For 1 1/2” (38mm) duct board, 3” (76mm)
wide tape is recommended. For 2” (51mm) duct board,
3” (76mm) wide tape is required. Position the tape along
the edge of the ap in a manner that will allow for 1" (25mm)
minimum overlap on adjacent surfaces. While holding
the tape taut, press in place taking care to avoid wrinkles
and folds. See Fig. 1
Rub tape rmly with a plastic sealing tool until the facing
reinforcement shows through the tape. Avoid excessive
pressure on the sealing tool that could cause the tape to
be punctured at staple locations. See Fig.2
Connections to sheet metal:
Pressure sensitive tape may be used to seal brous
glass ducts to sheet metal in systems operating at less
than 1" w.g. (250 Pa) static pressure when the sheet
metal surfaces are rst carefully cleaned of any residual dirt,
oil, or grease.
Application below 50 °F (10 °C):
If the temperature of either the duct board surface or
the tape is less than 50°F (10°C) at time of application,
heat must be applied.
Using any suitable heating iron with the plate
temperature set at approximately 400 °F (200 °C),
pre-heat the area to be taped. Quickly position the tape
on the pre-heated area and press in place. Pass the iron
two or three times over the taped area using a rapid
ironing motion (see Fig. 3).
Complete the bond by rubbing the tape rmly with the
plastic sealing tool until the facing reinforcement shows
through the tape clearly.
If tape has been stored at temperatures below 50 °F
(10 °C), it may be conditioned prior to use by placing it
in a warm environment to improve the initial tack.
Fig 1 Applying pressure sensitive aluminum foil tape to
longitudinal seam. Hold one end in place rmly and press tape
in place taking care to avoid wrinkles and folds.
Fig 2 Rub squeegee/plastic sealing tool rmly across the tape
surface removing air bubbles and folds until the the facing
reinforcement shows clearly through the tape. Avoid puncturing
or tearing the tape.
Fig 3 When applying pressure sensitive tape at temperatures
below 50 °F (10 °C), use iron set at 400 °F (200 °C) to pre-heat
area to be taped, then press tape in place.
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Nashua Tape 1542698 Installation guide
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