Page 405 - 2018_IRC

WALL COVERING

R703.15.2 Furred cladding attachment. Where wood ing, furring minimum fastening requirements to support the
furring is used to attach cladding over foam sheathing, fur- cladding weight shall be as specified in Table R703.16.2.
ring minimum fastening requirements to support the clad- Where placed horizontally, wood furring shall be preserva-
ding weight shall be as specified in Table R703.15.2. tive-treated wood in accordance with Section R317.1 or
Where placed horizontally, wood furring shall be preser- naturally durable wood and fasteners shall be corrosion
vative-treated wood in accordance with Section R317.1 or resistant in accordance with Section R317.3. Steel furring
naturally durable wood and fasteners shall be corrosion shall have a minimum G60 galvanized coating.
resistant in accordance Section R317.3. R703.17 Cladding attachment over foam sheathing to
R703.16 Cladding attachment over foam sheathing to masonry or concrete wall construction. Cladding shall be
cold-formed steel framing. Cladding shall be specified and specified and installed in accordance with Section 703.3 and
installed in accordance with Section R703, the cladding man- the cladding manufacturer’s instructions or an approved
ufacturer’s approved instructions, including any limitations design. Foam sheathing shall be attached to masonry or con-
for use over foam plastic sheathing, or an approved design. In crete construction in accordance with the insulation manufac-
addition, the cladding or furring attachments through foam turer’s installation instructions or an approved design.
sheathing to framing shall meet or exceed the minimum fas- Furring and furring attachments through foam sheathing into
tening requirements of Section R703.16.1, Section R703.16.2 concrete or masonry substrate shall be designed to resist
or an approved design for support of cladding weight. design loads determined in accordance with Section R301,
Exceptions: including support of cladding weight as applicable. Fasteners
used to attach cladding or furring through foam sheathing to
1. Where the cladding manufacturer has provided masonry or concrete substrates shall be approved for applica-
approved installation instructions for application tion into masonry or concrete material and shall be installed
over foam sheathing, those requirements shall apply. in accordance with the fastener manufacturer’s instructions.
2. For exterior insulation and finish systems, refer to Exceptions:
Section R703.9.
1. Where the cladding manufacturer has provided
3. For anchored masonry or stone veneer installed over approved installation instructions for application over
foam sheathing, refer to Section R703.8. foam sheathing and connection to a masonry or concrete
R703.16.1 Direct attachment. Where cladding is substrate, those requirements shall apply.
installed directly over foam sheathing without the use of 2. For exterior insulation and finish systems, refer to Sec-
furring, cladding minimum fastening requirements to sup- tion R703.9.
port the cladding weight shall be as specified in Table
R703.16.1. 3. For anchored masonry or stone veneer installed over
foam sheathing, refer to Section R703.8.
R703.16.2 Furred cladding attachment. Where steel or
wood furring is used to attach cladding over foam sheath-

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