Instructions / Assembly

16
Direct Attachment Method
Screws or Nails By utilizing the high compressive strength
of rigid mineral wool continuous insulation
board, only long screws penetrate the
continuous insulation to secure the
cladding attachment system (such as girts
or channels) to the stud framing below the
CI. This reduces the thermal bridging
through the assembly.
Typically, cladding is attached to 16-, 18-, or
20-gauge channels, girts, or dimensional
wood furring. This particular rigid board CI
to be used is dependent upon the cladding
weight and attachment system. Contact
the cladding attachment manufacturer for
recommendations.
When installing over wood framing,
fasteners may be secured into studs below
the CI or into properly designed wood
sheathing. When installing over steel
framing, fasteners must be secured directly
into stud framing. When installing over concrete or masonry structures, anchors or
masonry fasteners are required. Always verify correct fastening methods with
cladding attachment manufacturers. This type of installation greatly reduces thermal
bridging versus traditional attachment methods. (See chart below.)
THERMAL BRIDGING IN CI
Typical Effectiveness of CI with Various Attachment Methods
Continuous Vertical Z-Girt
Continuous Horizontal Z-Girt
Aluminum T-Clip
Galvanized Steel Clip
Stainless Steel Clip
Isolated Galvanized Clip
Fiberglass Clip Galv. Screws
Galvanized Steel Screws
Fiberglass Clip Stain. Screws
Stainless Steel Screws
FG Clip No Through Screws
0%
10% 20% 30% 40% 50% 60% 70% 80% 90%
100%