Installation Instructions
5
©2021 Louisiana-Pacific Corporation. All rights reserved. LP, SmartSide, ExpertFinish, SilverTech and 
SmartFinish are registered trademarks of Louisiana-Pacific Corporation. Printed in U.S.A.
NOTE: Louisiana-Pacific Corporation periodically updates and revises its product information. 
To verify that this version is current, call 888-820-0325.
  WARNING: Drilling, sawing, sanding or machining wood 
products can expose you to wood dust, a substance known to the 
State of California to cause cancer. Avoid inhaling wood dust or 
use a dust mask or other safeguards for personal protection. For 
more information go to www.P65Warnings.ca.gov/wood.
For a copy of the warranty or for installation and technical 
support, visit the LP SmartSide product support Web site at:
for for additional support call 888-820-0325.
www.lpsmartside.com
LP SmartSide panel siding is accepted by the State of California 
as category 8140- Exterior Wall Siding and Sheathing for Wildland 
Urban Interface (WUI) applications. For WUI compliance, install 
panel siding in accordance with Louisiana-Pacific’s printed 
application instructions with the addition of a paintable fire 
retardant sealant [UL Listed fire caulk, nominal 1/4 inch (6 mm) 
bead] in the vertical joint, and using an enhanced nailing pattern 
of 3 inch (76 mm) o.c. perimeter nailing and 8 inch (203 mm) o.c. 
field nailing. Look for the California State Fire Marshal Office label 
on LP SmartSide panel siding. 
The Louisiana-Pacific Corporation (“LP”) LP SmartSide Siding (the 
“Products”) Limited Warranty (the “Warranty”) applies only to 
structures on which the Products have been applied, finished and 
maintained in accordance with the published application, finishing 
and maintenance instructions in effect at the time of application. 
The failure to follow such application, finishing or maintenance 
instructions will void the Warranty as to the portion of the Products 
affected by the variance (the “Affected Products”). 
LP assumes no liability for any loss or damage sustained by the 
Affected Products and is expressly released by the purchaser or 
owner from any such loss or liability.
Any modification of the Warranty’s application, finishing or 
maintenance requirements is void unless approved in writing by 
LP prior to application.
WARRANTY REMEDIES ARE NOT AVAILABLE IF
REQUIREMENTS ARE NOT FOLLOWED.
®
S  F A D  W  
Interior 
Finish
3/8" (10 mm) gap
Sloped fl ashing 
with  4"  (102  mm) 
vertical leg
Trim
Nail fi n 
(Do not damage)
Siding
Install door/window 
per manufacturer’s 
instructions
WRB
Figure 5D
Extend 
siding 
below 
sill plate
Min. 1/8" (3mm) 
space between 
siding and 
masonry 
Sill plate
Flashing
Masonry 
foundation
Sill plate
OR
Figure 5B Figure 5C
HORIZONTAL BANDBOARD 
Panel siding 
Sloped fl  ashing 
with  4"  (102  mm) 
vertical leg
2" (51 mm) x 
band board
BAND BOARD 
over PANEL FILLER
Filler Board
Panel siding
3/8" (10 mm)
Figure 5A
For multi-story buildings, make provisions at horizontal joints 
for “settling” shrinkage of framing, especially when applying 
siding directly to studs.
P S J D
(CONT.)
T-U K
P E A: S E, S 
E  S E  A B
Figure 5JFigure 5H
S P O
         Nail  Head  
Paint Applicator 
                Cut  End   
Paint Applicator 
 Square Edge Shiplap Edge
Shiplap Edge 
with alignment bead
1/8" (3 mm)
gap
Fig. 5E
Fig. 5F
Fig. 5G
1/8" (3 mm)
gap
1/8" 
(3 mm)
gap
1/8" 
(3 mm)
gap






