FAQ

Date: November 2009
Preceding Version: June 2009
2
10. What kind of nails do I need?
a. Corrosion resistant fasteners must be used to avoid rust staining and
erosion of the fasteners. Please refer to the proper installation
instructions and code report for the minimum size and type, as well as
the fastening schedule.
11. If the installation is not consistent with the application instructions, will it void my
warranty?
a. The LP® SmartSide® limited warranty will remain in effect with the
exception that any issue caused by an installation that varies from the LP
SmartSide installation instructions will not be the responsibility of LP.
Refer to the installation instructions for proper installation.
12. Can I install SmartSide® lap vertically and cover the joint with battens?
a. No. LP SmartSide siding is designed for horizontal installation only. Un-
grooved LP SmartSide Precision series panel siding is available for board
and batten applications. Refer to the installation instructions for proper
installation.
13. What is the fire rating?
a. LP SmartSide is a class C (III) rated product when tested according to
ASTM E84. All LP SmartSide siding can be used in a 1-hour fire rated
assembly when it is installed over 5/8 type-X gypsum, which is consistent
with other siding types such as fiber cement siding.
14. What kind of paint must I use?
a. Acrylic latex coatings designed for wood composites are highly
recommended. Refer to the installation instructions for proper
installation.
15. How do I install SmartSide siding® over SIP or ICF assemblies?
a. Follow the LP SmartSide installation instructions. The SIP manufacturer
will need to specify the type of corrosion resistant fastener and the
fastener spacing to meet the minimum required wind-load values. The
fastener spacing must not exceed the maximum fastener spacing stated
in the LP SmartSide installation instructions. If you have further
questions, contact the LP Technical staff at [phone]. Consult your
local code authority to ensure compliance with the local building code.
16. Is it beneficial to prime the back side of the LP SmartSide® siding or trim?
a. No. Back priming has proven to be useful to control tannin staining with
some types of solid wood siding, trim, and some composite sidings. LP
SmartSide products are designed to perform without back priming.
17. Should we caulk at the overlap of the lap siding?
a. No. Refer to the installation instructions for proper installation.
18. Can we rip lap to create a smaller size?
a. It may be necessary to rip the lap siding at times where the wall
terminates at the soffit or around penetrations. Use special care to prime
and paint any exposed wood that may result. Ripping the lap siding to
make narrower lap siding is not recommended.