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CL4FIRE Ductwrap “2 OR 3” SIDED PINNING-ONLY
METHOD
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Installation
- Requires two (2) layers of CL4FIRE ductwrap insulation in accordance
with manufacturer’s instructions
- Duct to be located a maximum of 6" from the floor or wall
assembly
Fastening
- Install Pinning Only pins (or alternatively
pin both sides of seam as outlined in CL4FIRE ductwrap “Pinning
Only” Method)
on exposed sides of duct and install CL4FIRE ductwrap insulation
using instructions shown in “Pinning Only” Method
- Overlap
both layers of CL4FIRE ductwrap insulation over concrete by minimum
of 3" and fasten using min 1-1/4" OD
fender washers over a minimum 1/4" diameter steel concrete
anchor inserted a minimum of 1-1/2" into concrete slab
spaced a maximum of 8" apart
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