Installation Guide

INFINITY TECHNICAL GUIDE
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11. INSTALLATION
Important! Please make sure that before you begin construction, you consult building requirements, codes and restrictions regarding
spacing and load requirements for rails. All supporting structures and framing must comply with applicable building codes. All local
building codes will supercede any recommendations, measurements or techniques in the following installation instructions.
If you have any questions or uncertainties, please contact Fortress Deck before beginning installation.
●Makesureyoupre-drillslightlysmallerholesthanthescrewshaftdiameterfortrimscrewsandensureallscrewsaresecure,but
notovertightenedduringinstallation.Thiswillhelppreventpressurecracksandmushrooming.
●Innityprolescontainplasticandwillexpandandcontractmoresothanwood.Theexpansionandcontractionoftheseproles
mustbeconsideredwheninstalling.Sucientexpansiongapsmustbeleftatbuttjointsaswellaswheretheprolesmeetxed
objects.Considertemperaturesattimeofinstallationforcontraction/expansionpurposes.TherateofexpansionofInnityprolesis
calculatedat0.025”or1/40”perfoot(¼”-⅜”onbothsidesofa20’board)overa50°Fswingintemperature.
●EnsureInnityhasacclimatedtotheenvironmentbeforeinstalling.Itisimportanttounderstandthatwheninstallingincolder
weatherthatthecompositeboardswillexpandmorethanwheninstallinginhotterweatherandgappingshouldbeadjusted
accordingly.
●Avoidpre-cuttingInnity
boards,asnoteveryconstructionwallisstraightandcutallFortressInnityproductsslowlyusingasharp
netoothbladetoavoidchipping.
●Therstboardiskeyinthelayingprocess!Ifitisaxeddeck,placetherstplankushwiththerimjoist-makesureitissquareor
parallelwiththeexistingstructureorwithyourframe.
●Makesureyourstartingproleissquareontheframeandlaidperfectlystraight,asallsubsequentplankswillfollowitsline.Make
sureofthisbymeasuringedgesanddiagonals.
●Surfacemounttheboardtotherimjoistwiththepreferredoverhang.Dependingonthedesign,youcanhaveabiggeroverhang,
butrememberyoucannoteveroverhangbymorethan2”.Aesthetically,itoftenlooksbetterwhenyouoverhangabout¼”-½”overthe
fascia.
●HULKHiddenClipcanbeusedwhenyouendushwiththeframeandthereisnooverhang.
●FortressInnityPostSleevesandModernRailsaremanufacturedforon-centerpostspacingtoaccommodate6’and8’rail
sections.ModernRailsaredesignedinslightlylongerspanstoaccountforslightvariationinpostplacementandcutendsduring
angledrailapplications.NOTE: IT IS IMPORTANT TO MEASURE POST SPACING PRIOR TO MAKING ANY CUTS.
11.1 Expansion Table
20footboardwithexpansionof0.025(1/40”)perfoot)
20’boardexplanation=½”-¾”
¼”-⅜”oneachside
¼”-⅜”gap ¼”-⅜”gap