Installation Instructions

4
• WSP wall sheathing must be a minimum 7/16 Category with an
APA Trademark that contains the consensus Standard DOC PS 2.
•
Panel siding must be fastened with:
- Minimum (0.092 inch shank diameter) hot-dip galvanized
ring shank nail, fastened in a grid a minimum of 8 inches
(203 mm) o.c. up to a maximum 16 inches (305 mm) o.c.
grid depending on the wind pressure, wind speed and
wind exposure category limitations in
APA Product
Report PR-N124
, Table 5a or 5b.
- Fastener length must be long enough to fully penetration
WSP wall sheathing by at least 1/4 inch (6 mm). Ensure that
the ring shanks of the nail fully engage the WSP sheathing.
• Siding may be installed over exterior gypsum or foam sheathing.
The following precaution must be followed:
- Fastener length must be increased to ensure a minimum
1-1/2 inch (38 mm) penetration into structural framing or
wood structural panel sheathing and structural framing; or
- For alternate fastening option to wood structural panel
sheathing only, the nail length must be long enough to
fully penetrate
sheathing by at least 1/4 inch (6 mm).
￮ Ensure that the ring shanks of the nail fully engage
the wood structural panel sheathing.
- A water-resistant barrier (WRB) is required in accordance
with building code requirements.
￮ A drainage plane (example: furring strips, drainage
mat or drainage board) may be required between
siding and WRB, consult local code requirements.
• Siding may be installed over low-compression foam sheathing.
• Panel siding may be nailed directly over foam sheathing
up to 1
inch
(25 mm) thick without a reduction in the allowable racking
shear capacity (wall bracing capacity).
P S I  F S
(R F I)     ( ) 
P S I  E G
 F S
(R F I)
• When panel siding is NOT used as wall bracing, refer to IRC
Chapter 7 on Wall Covering for prescriptive siding attachment
over foam sheathing up to 4 inch (102 mm) thick direct to
wood framing or cold-formed steel framing.
- Section 703.15.1 for minimum fastening requirements
over foam sheathing to wood framing.
- Section 703.15.2 for furring minimum fastening
requirements over foam sheathing to wood framing.
- Section 703.16.1 for minimum fastening requirements
over foam sheathing to steel framing.
-
Section 703.16.2 for furring minimum fastening
requirements over foam sheathing into steel framing.
• LP assumes no liability for any loss or damage caused by the
IRC prescriptive design of the mechanical connection of the
siding to the structure and is expressly released by the
purchaser or owner from any such loss or liability.
  ( ) R--W  C I
1" (25 mm) min.
clearance from
roofi ng
Trim
Seal bottom
drip edges
4" (102 mm) min.
vertical leg of
step fl ashing
Figure 4B
LAP
Siding
Framing (band joist,
truss chord, etc.)
Wall Framing
1" (25 mm)
min. overlap
Figure 4E
P S J D
BUTT & FLASH
Sloped
fl ashing with
4" (102 mm)
vertical leg
Siding
3/8"
(10 mm)
min. gap
Blocking
HORIZONTAL WALL JOINTS
Figure 4C
A F O  SIP A
 W S P W S
(WSP)
P S I  F S
(R F I)     ( ) 
• In braced wall assemblies;
- Use a minimum (0.113 inch shank diameter) hot-dip
galvanized (ASTM A153) or equivalent nail for 38 Series
and 76 Series panel siding.
- Use a minimum (0.131 inch shank diameter) hot-dip
galvanized (ASTM A153) or equivalent nail for 190 Series
panel siding.
- When using panel siding as both wall bracing and siding
consult Table 1 of
APA Product Report PR-N124 o r
ICC-ES Evaluation Report ESR-1301 for fastener spacing;
or consult a design professional.
• In non-braced wall assemblies;
- A minimum 0.092 inch smooth shank diameter nail may
be substituted depending on the wind pressure, wind
speed and wind exposure category limitations in
PR-N124 or ESR-1301.
N I - D  S (CONT.)