Specification

Specifications
APA Rated Sheathing & Structural 1 Sheathing
• LPOSBsheathingpanelsareofaconsistentcompositionand
manufacturedtobefreeofknots,graindefects,corevoids,splits
andotherirregularities.Thewoodstrandsaremixedwithresins,
arrangedinlayersfordesignstrengthandstabilityandbonded
underheatandpressure.Thepanelsaresealedonallfouredgesfor
addedmoistureresistanceanddimensionalstability.
• LPOSBsheathingroofpanelshaveacourse-texturedtopsurface
thathelpsprovidesafefootingonpitchedroofs.
•Thepanelsshouldbefastenedwithconventionalnailingtechniques.
Consultyourlocalbuildingauthoritiesregardingacceptabilityof
fasteningstechniques.
•Thepanelsmaybesawncleanly,andmayberoutedordrilledwith
standardwoodworkingtools.
• LPOSBSheathingpanelsaresizedto3’11-7/8”x7’11-7/8”
dimensions(reduced1/8”from4’x8’toallowforproperspacing
duringinstallation).
• Panelsareavailableinperformancecategoriesrangingfrom
 3/8to1-1/8.
• Extendedlengthandoversizedpanelsaresubjecttoavailability.
• LPOSBSHEATHINGPANELSARENOTFORUNPROTECTED
EXTERIORUSE.Theymustbecoveredwithsidingpanelsorother
typeofexteriorwallcladdingorroofingmaterial.Normalexposure
toweatherduringordinaryconstructiondelayswillnotdamagethe
panels.ADDITIONALPROTECTIVEMEASURESARERECOMMENDED
FOREXTENDEDADVERSEWEATHERCONDITIONS.EXCEPTION:
PanelsidentifiedasExposure1maybeusedforroofsheathing
whereexposedontheundersidesuchasoneaves.
• Slightsurfaceflakingorthicknessswellcausedbymoisture
exposurewillnotaffectthepanels’structuralperformance.
• LPOSBsheathingwallpanelsprovidesufficientrackingstrengthto
meetcornerbracingrequirements.
• Panelsarestiffandstrongandhavealowcoefficientoflineal
expansion.
• ForfurthertechnicalandengineeringinformationandMaterial
SafetyDataSheets,contactyourLPsalesrepresentative
LPBuildingProductsaremanufacturedinaccordancewiththe
company’spolicyonprotectionoftheenvironmentwhichincludes:
• Useofenvironmentalcontroltechnologyandenergyefficient
equipmenttoconserveresources.
• Useofwoodby-productstoproduceenergy,therebyconserving
nonrenewableresources.
• Useofthird-partycertifiedwoodfromwellmanagedforeststopro-
duceallofLP’swood–basedproducts.
• Useofrawmaterialmoreefficientlytoproducetheseengineered
woodproductsresultinginmoreconsistentperformanceand
strengththannon-strand-basedsheathingproducts.
• Complywithlocalsafetyregulationswheninstallingroof,wall,or
subfloorsheathing.
• Complywiththefollowingmanufacturer’sinstructionsand
withAPA’sEngineeredWoodConstructionGuideFormE30U
(September2007)orthecurrentequivalent.Toobtaininstallation
instructioninformationfromtheAPA,call(253)565-6600orvisit
www.apawood.org.
• Storepanelsinclean,dryareasofftheground.Ifpossible,store
indoors.Ifstoredoutside,coverwithplasticsheetsortarps.Keep
coveropenandawayfromthesidesandbottomofpanelstoallow
foraircirculation.
• Additionalprotectivemeasuresmaybenecessaryduringextended
adverseweatherconditions.
• Placetheskid-resistantsideupwiththeAPAtrademarkstamp
facingdownandwearskid-resistantshoeswheninstallingthe
roofsheathing.
• Installwiththelongdimensionorstrengthaxisofthepanel
acrosssupportsandwiththepanelcontinuousovertwoormore
spans.
• Provide1/8”minimumspaceatpanelendsandedges.Usea
spacertool(i.e.10dboxnail)toassureaccurateandconsistent
spacing.
• Panelendjointsshalloccuroverframing.Staggerendjointsin
eachsucceedingrow.
• Provideadditionalpanelstiffnessbyinstallingpaneledgeclips
mid-spanonallun-supportededges.
• Nail6”o.c.alongsupportedpanelendsandedgesand12”o.c.
atintermediatesupports.Fastenpanels3/8”frompaneledges.
Use8dcommonnailsforpanelsupto1”thickness.Forpanels
over1”use8dring-shankor10dcommonnails.Othercode-
approvedfastenersmaybeused.
• Coverroofsheathingassoonaspossiblewithroofingfeltor
shingleunderlaymentforprotectionagainstexcessivemoisture
priortoroofing.Ifanyedgeswellingoccurspriortoroofunderlay-
mentinstallation,allraisedjointsshouldbesandedflat.
• Allowsheathingtoadjusttohumidityandmoistureconditions
beforeshingleinstallation.
M  F
S  P C
L
P P
E I
I - G
S  H
R I