Instructions / Assembly

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COPPER-FABRIC NA™
Basic Use: Hohmann & Barnard copper fabric flashings are
used to protect interior areas of a wall from moisture penetration,
and leakage from expansion cracking that can occur in masonry
applications.
Typical locations that require flashing are:
• Under stone copings with exposed metal flashing
• At set back walls
• At heads of doors and window sills
• At spandrel beams
• At projection courses
• Over concrete foundations
At these and other locations, the flashing forms a watertight
barrier and directs moisture back to the outside of the building,
stopping its progress through the wall to the interior.
Sizes and Packaging: All Hohmann & Barnard copper fabric
flashings are supplied in rolls, shipped in cartons. Standard
weights are 3, 5 & 7 oz. Standard roll widths are 12”, 16”, 18”,
24” & 36". Standard lengths are 25 feet.
Applicable Standards: Meets ASTM B370 and applicable state
and federal government specifications.
MEMBRANE PROTECTION
Non-Asphalt thru-wall copper flashing such as Copper-Fabric NA
should not be exposed to UV rays for more than 120 days. Thru-
wall flashing should be secured to the substrate to prevent
ripping and tearing during severe weather conditions while
waiting for exterior wythe to be constructed.
Weathering Characteristics: All Copper Flashings have been
designed to withstand the environmental exposure encountered
in concealed wall applications
INSTALLATION
Copper-Fabric NA thru-wall flashing should carry through the
wall and turn up a few courses at the midpoint. It should extend
just past exterior brick face and then be cut flush. Optional
stainless steel or copper drip-edge is recommended to ensure
diversion of moisture to outside of building. When using a drip
edge trim the outer edge of the Copper-Fabric NA back ¾” from
the exposed face of the wall and run a tooled bead of HB
Sealant along that front edge and a continuous 1/8” bead in
between the Copper-Fabric NA and the drip edge. If you are
using the Hohmann & Barnard FTSA drip edge, there would be
no need to run the tooled bead along the outer edge of the
flashing. It should also turn up on the back (interior) of the wall
at least eight inches, and be secured to back-up mortar joint or
reglet. Surface mounted flashing should be attached with a
stainless steel/aluminum termination bar and sealed with HB
Sealant. At the joints, the Copper-Fabric NA Flashing should be
lapped at least three inches and all overlaps should be sealed
with 2 continuous 1/8” beads of HB Sealant centered in between
the 3 inch overlap and a continuous tooled bead of 1/8”-1/4”
thickness and 1-1 ¼” wide at the outside edge on top of the
overlap. Copper-Fabric NA thru-wall flashing and HB Sealant
are compatible with most common air barrier materials.
*All work shall be executed in conformance with accepted
trade practices.
** Hohmann & Barnard recommends the use of copper or
stainless steel soldered pre-formed inside/outside corners
and end dams.
*** When installing the FTSA style drip plate, the
foam is factory installed end to end under the drip
plate. To properly overlap the drip plate, remove 2-
3” of the foam from one of the ends you overlap
and overlap the drip edge 2-3”. Fill in any voids
where the foam was removed with sealant and also
apply sealant in between and on top of the overlap
of the drip plate.
MAINTENANCE
Properly installed, Copper Flashing is completely maintenance
free for the life of the building.
*Note: Hohmann & Barnard, Inc. is not responsible for incompatibility
resulting from the use of non-H&B mastic and primer.
See www.h-b.com for complete warranty information.