Full Product Manual

24 | PermaBASE Building Products
Exterior Installation of
PermaBASE CI®
WALLS
Wall Framing: Framing members should be spaced a maximum of
16" o.c. and shall be a minimum of 2"x 4" nominal (wood) or 20
gauge (metal). Edges of PermaBASE CI® Insulated Cement Board
parallel to framing should be continuously supported. Provide
additional blocking when necessary to permit proper attachment.
Water Barrier: While PermaBASE CI Insulated Cement Board
is unaected by moisture, a water/air resistive barrier (WRB)
must be installed to protect the cavity. The type and specic
placement or location of the water barrier will vary based on local
building codes and/or manufacturers' specications, installation
guidelines and warranties. Consult the WRB manufacturer’s
recommendations for specic installation guidelines.
PermaBASE CI Insulated Cement Board:
Note: PermaBASE CI can be cut using three methods:
1. Score PermaBASE CI from the foam side using a utility knife
to score/cut completely through the insulation and into the
back of the cement board. The board can then be snapped. Cut
through the mesh on the front of board to complete the cut.
2. PermaBASE CI can be cut to length effectively with a hand saw.
3. While wearing the proper protective equipment such as safety
glasses and approved respirator, use a power saw with the
appropriate blade to cut through the entire panel. Penetrations
can be created in the panel with a drywall saw.
Apply PermaBASE CI with ends and edges closely butted, but not
forced, together. Stagger end joints in successive courses. Drive
fasteners into eld of cement board rst, working toward ends
and edges. Space fasteners maximum 8" o.c. with perimeter
fasteners at least 3/8" and less than 5/8" from ends and edges.
Ensure PermaBASE CI Insulated Cement Board is tight to framing.
Do not overdrive screws to the point they penetrate the berglass
mesh in PermaBASE CI.
Joint Reinforcement: Trowel bonding material to completely ll
the tapered recessed board joints and gaps between each panel.
On non-tapered joints, apply a 6" wide, approx. 1/16" thick, coat
of bonding material over entire joint. For all joints, immediately
embed 4" alkali-resistant berglass mesh tape fully into applied
bonding material and allow to cure. Same bonding material should
be applied to corners, control joints, trims or other accessories.
Feather bonding material over fasteners to fully conceal.
Control Joints: For exterior installations, consult nish
manufacturer for spacing requirements. For exterior tile
applications, control joints should be spaced a maximum of every
12'. If no recommendation is available, allow a maximum of 16
lineal feet between control joints. A control joint must be installed
but not limited to the following locations: where expansion joints
occur in the framing or building (discontinue all cross-furring
members located behind joint); when boards abut dissimilar
materials; where framing material changes; at changes of building
shape or structural system; at each story separation. Place
control joints at corners of window and door openings or follow
specications of architect. Control joint cavity shall not be lled
with coating or other materials.
LIMITATIONS
• Treat joints with 4" wide alkali-resistant fiberglass mesh tape
set in a modified mortar or stucco basecoat.
•
Steel framing must be minimum 20-gauge (galvanized) (.0312”
design thickness) or heavier.
•
Do not expose PermaBASE CI to temperatures over 220˚F
(105˚C).
•
Do not use PermaBASE CI as a nailing base for other finishes.
•
Thin veneer construction can reveal planar irregularities in
framing.
•
Minor cracking at joints may become visible in finished
exterior
surface.
•
For exterior finishes applied directly to PermaBASE CI,
reinforcing mesh must be embedded in basecoat (consult
exterior finish manufacturer for additional installation
requirements).
•
Sheathing selection and installation varies according to
type of wall construction.
Advantages of Creating Continuous Insulation with
PermaBASE:
• Provides better thermal comfort, lowers heating and cooling
costs, reduces likelihood of trapped moisture.
•
Helps mitigate the loss of heat/air conditioning by insulating
the studs.
•
Allows multiple finishes on one substrate.
•
Works in all climates – adaptable to varying regional system
requirements.
•
15-year exterior warranty.
•
Speeds up your schedule – faster to install than traditional
method.