Page text

Division 07 – Thermal and Moisture Protection
OPL Design No. CEJ 425 P
07 84 00 Fire stopping
07 84 53 Building Perimeter Fire stopping
Page 4 of 6
Date Revised: November 5, 2010
©Intertek
Project No: G100141291SAT-007
above or below the perimeter joint
protection (Item 3). When used,
secure the interior curtain wall
surface in accordance with the
manufacturer’s
installation
instructions.
Gypsum
board
is
acceptable.
I.
Exterior Curtain Wall Finish: (Not
shown) The exterior finish shall not
create voids or openings in the
sandwiched wall surface and shall
extend at least 4 in. above and at
least 24 in. below the surface of the
concrete floor assembly (Item 1).
The
following
finishes
are
acceptable:
(1)
Exterior
Insulation
Finish
System: When desired, use any
Listed and Labeled EIFS composed
of an expanded polystyrene (EPS)
foam insulation, and an Exterior
Curtain Wall Finish consisting of the
following: A plaster, base coat and
reinforcing mesh applied over the
sandwiched wall surface. Precut the
mesh as needed. The mesh is a
woven
fiberglass
reinforcement
fabric that is compatible with the
plaster base coat and finish coat
materials. Apply 1/16 to 1/8 in. thick
plaster base coat to the exposed
surface of the EPS foam. The EPS
foam boards nominally measure 24
in. wide by 48 in. long by a max. of 4
in. thick with a nominal density of 1
pcf. The EPS foam is attached to
the sandwiched wall surface (Item
2D) using mechanical fasteners or
an adhesive in accordance with
manufacturer’s
recommendations.
Install the EPS boards in a running
bond
(brick-like)
pattern
and
staggered over sandwiched wall
surface (Item 2D) joints. Apply
pressure to the EPS boards to
assist in the bonding process. All
EPS boards must be butted together
with no gaps or voids between
them. Allow a min. of 12 hours
before continuing the application
process when using adhesive. The
EPS boards must be rasped to
remove all irregular seams and
establish a continuous flat surface.
Apply the mesh over the EPS;
embed the mesh into the plaster
base coat using a trowel. Start at
the middle and work outwards
towards edges. The final thickness
of the plaster base coat with the
mesh
embedded
should
be
approximately 1/16 in.. Let the base
coat dry completely before applying
the plaster finish coat. The plaster
finish coat is a gypsum based wall
coating which may contain silica
sand or marble aggregates. Apply
the plaster finish coat using a trowel
in the same manner as the plaster
base
coat.
Other
installation
techniques are acceptable when
detailed by the manufacturer. The
EIFS
system
is
a
monolithic
assembly
without
expansion
or
control joints. Only Intertek Certified
EIFS
Manufacturer’s
product
meeting
the
above
min.
requirements.
(2) Glass Panels: Size and install
glass
panels
into
curtain
wall
framing according to the curtain wall
system manufacturer's guidelines.
Use a min. 1/4 in. thick, clear, heat-
strengthened
(HS)
glass
or
tempered glass with a max. width
and height less than the framing o.c.
spacing, which allows the glass to
be secured between the notched
shoulder
of
the
framing
and
pressure bar. Panels are secured
with
a
thermal
break
(rubber
extrusion), pressure bar (extrusion),
min. 1/4-20 x 5/8 in. long screws,
and a snap face (extrusion) or other
manner
as
detailed
by
the
manufacturer. The system is a
monolithic
assembly
without
expansion or control joints.
(3) Aluminum Panels: Min. 1/8 in.
thick aluminum panels secured to