Nt3 - James Hardie

TRIMMING CORNERSHardieTrim NT3 boards with back grooves are installed around corners by pre-building the corner off the wall with the HardieTrim Corner Tabs (JH sku no. 280155).• Attach HardieTrim Corner Tabs to the back side of the trim using eight(8) - 18 ga. 1/2" L x 1/4" W narrow crown galvanized staples using a pneumatic stapler.Ensure the HardieTrim Corner Tabs are fastened tight and straight to the trim boards. (Figure 4)• For wood frame construction, attach trim to building using min. 2, 6d siding nails fastened through the HardieTrim Corner Tabs attached to minimum 7/16" OSB *.(Figure 5)• Attach a HardieTrim Corner Tab 1" from each ends and every 20" o.c.• TIP: Creating a jig for the work station is recommended to ensure corners are fastened securely and straight. (Figure 7)Corner studsHardieTrimCorner TabsFasten 2” x 4”timber blocksto a work benchHardieTrimCorner TabUse 4 staples per pieceof trim to fasten theL-shaped tab to thepre-built corner. Usethe nail line on thetabs as a guide.Siding nailFigure 4 Figure 5HardieTrim NT3 boards with back groovescan also be installed directly to the buildingcorners using minimum 16 ga. 2"galvanized finish nails 16" o.c.cornerstudsHardieTrimCorner TabCLEARANCES When installing James Hardie ®products, all clearance details need to be followed.Install siding and trim products in compliance withlocal building code requirements for clearancebetween the bottom edge of the siding and theadjacent finished grade.22.5º - 45ºweather cutFigure 6 Figure 7Maintain a minimum 1" - 2" clearancebetween James Hardie ® trim products anddecks, paths, steps and driveways.Deck materialJoistHardieTrim ®NT3 BoardsHardiePlank ® siding1/4" gapFlashingHardieTrim ®NT3 boardFasten 2” x 8” studto the timber blocksWaterresistivebarrierHardieTrimFlat Tab1" - 2" minFigure 82" Finish nailFigure 96"Figure 10FlashingLedgerAt the juncture of the roof and verticalsurfaces, flashing and counterflashingshall be installed per the roofingmanufacturer’s instructions. Provide a1"-2" clearance between the roofing andthe bottom edge of the trim.1"-2" min.Maintain a 1/4" clearance between the bottomof James Hardie ® products and horizontalflashing. Do not caulk gap.HardiePlank ® sidingDo not caulkFlashing1/4" gapMaintain a minimum 1" gapbetween gutter end caps andsiding & trim.Figure 13Figure 11VALLEY FLASHINGThe valley flashing must extend a minimum 1"-2" pastthe HardieTrim ® Fascia and 6" to either side. If thevalley flashing has been cut flush with the roofing, anadditional valley flashing extension must be installed. Ifrain gutter is present and roof shingles extend 1" pastfascia, a valley flashing extension is not required.Figure 14FlashingFigure 15HardieTrim ® NT3 boardFigure 12HardieTrim Flat TabHousewrapStepflashingKickout flashingHardiePlank ®siding1"Gutter and end capHardieTrim ®FasciaKICKOUT FLASHINGBecause of the volume of water that can pour down asloped roof, one of the most critical flashing details occurswhere a roof intersects a sidewall. The roof must beflashed with step flashing. Where the roof terminates,install a kickout to deflect water away from the siding.It is best to install a self-adhering membrane on the wallbefore the subfascia and trim boards are nailed in place,and then come back to install the kickout.RoofingPaperHardieTrim® FasciaValleyFlashingExtensionValleyFlashing1"-2" min.DripedgeSelf-adheringeaves membraneDrip edgeFigure 15, Kickout Flashing To prevent water fromdumping behind the siding and the end of the roofintersection, install a "kickout" as required by IRC codeR905.2.8.3 : "…flashing shall be a min. of 4" high and 4"wide." James Hardie recommends the kickout be angledbetween 100° - 110° to maximize water deflection.TR1120_P2/5 6/13

TRIM APPLICATION FOR WINDOWS, DOORS& OTHER OPENINGSTrim the opening prior to the installation of the siding (Figure 16).Place a Flat Tab at the end of each trim board and one tab every 16" OC.Attach the trim boards and Flat Tabs around the opening as shown inFigures 16 and 17. Use 16 ga. galvanized 2" long finish nails to ensureproper fastening if needed.Flashing needs to betucked under the waterresistive barrier and overDo not caulk between thethe Flat Tabs.siding and the flashing.Water-resistive Barrier1/4" gapFigure 16 Figure 17Side trim pieces go tothe top of the window.Header piece spans the windowincluding the side trim pieces.Bottom trim pieceis the width of thewindow.NOTE: Follow your window/door manufacturersinstallation instructions.BAND BOARDS, FRIEZE BOARDS, RAKE TRIM & FASCIAHardieTrim NT3 boards may also be used as band boards, frieze boards,rake trim or fascia (Figure 19). Use 16 ga. galvanized 2" long finish nails to ensureproper fastening if needed.Figure 19Soffit panel2x sub fasciaHardieTrim ® NT3board1/8" caulked gap is left betweensiding and the side trim pieces.Figure 18FASCIA & RAKEFor fascia and rake applications, a flashing is required over top of thefascia (Figure 21).Figure 21Roof sheathingRoofingRoof underlaymentHardieTrim NT3boardFlashingRoof framingDrip edge flashingHardieTrim ®NT3 TM board (ensureadequate fastening)HardieTrim ® NT3Band BoardSoffitSubfasciaFinishing nailsFRIEZE BOARDSPlywood orOSBsheathingLeave a minimum 1/8" gap, then caulk.Frieze boardWater-resistive barrierTerminate frieze boardinto HardieTrim ® NT3 TM BoardFasten frieze boardto framing utilizing16 galvanized 2"long finish nails.Ensure properfastening.Figure 22Birdhouse DetailEnsure thatall birdhousetrim isadequatelyfastened to asolidsubstrate.HardieSoffit ® PanelHardiePlank ® SidingHardieTrim ®NT3 TM BoardFigure 20TR1120_P3/5 6/13

BAND BOARDA flashing is required over the trim and HardieTrim Flat Tabs. (Figure 23) Terminate ends of theBand Board into Trim or Siding or miter cut the edges of the trim at the corners of the building.Place a HardieTrim Flat Tab at the end of each trim board and one tab every stud at a maximumof 16" o.c. The HardieTrim Flat Tabs should be attached to the trim in an alternating pattern tothe top and bottom of the band board (Figure 24, 25). Use 16 ga. galvanized 2" long finish nails toensure proper fastening if needed.Fasten 4 staples to the center of the nailing ridgeHardieTrim Flat TabsFigure 23SheathingWeather-resistive barrierHardiePlank ® Siding1/4" gap. Do not caulk.Flashing16" o.c. maxHardieTrim Flat TabsFigure 24BlockingHardieTrim NT3 Board16" o.c. maxFigure 25HardieTrim Flat TabsCaulkGENERAL FASTENING REQUIREMENTSFasteners must be corrosion resistant, galvanized, or stainless steel.Electro-galvanized are acceptable but may exhibit premature corrosion. JamesHardie recommends the use of quality, hot-dipped galvanized fasteners. JamesHardie is not responsible for the corrosion resistance of fasteners. Stainlesssteel fasteners are recommended when installing James Hardie ® products nearthe ocean, large bodies of water, or very humid climates.Manufacturers of ACQ and CA preservative-treated wood recommend spacermaterials or other physical barriers to prevent direct contact of ACQ or CApreservative-treated wood and aluminum products. Fasteners used to attachHardieTrim Tabs to preservative-treated wood shall be of hot dipped zinc-coatedgalvanized steel or stainless steel and in accordance to 2009 IRC R317.3 or2009 IBC 2304.9.5.”PNEUMATIC FASTENING:HardieTrim NT3 boards with the back groove can be fastened with apneumatic tool. All fasteners should be driven flush to the HardieTrim Flatand Corner Tabs (Figure 26). A flush mount attachment on the pneumatictool is recommended. This will help control the depth the fastener is driven.If setting the depth proves difficult, choose a setting that under drives thefastener. (Drive under driven fasteners snug with a smooth faced hammer -Does not apply for installation to steel framing).• Drive fasteners perpendicular to the trim and framing.• Do not drive fasteners at an angle.• For wood framing, under driven fasteners should be hit flush to the HardieTrimFlat and Corner Tabs with a hammer (for steel framing, remove and replace nail).• Do not use aluminum fasteners, staples, or clipped head nails to attach theproduct directly to the building.FlushHardieTrim Flat andCorner TabsSiding nailattaches tabto the wall.HardieTrim Flat and Corner TabsDo notunderdrive nails.Figure 26Only use staples tofasten HardieTrim Flat andCorner Tabs to the trim boards.FASTENER TABLEApplicationFraming MaterialTab is nailed intoFastener(tab to framing)Fastener(tab to NT3 trim)Max Tab Spacing(inches on center)Wood Stud(minimum G=0.42)One 6d corrosion resistant siding nailinstalled through flange into framingFlat TabMinimum APA rated7/16" OSBMinimum 20gauge steelTwo 4d ring shank corrosion resistantsiding nails equally spaced installedthrough flange into framingOne No. 8 X 1" long X 0.323" headdiameter screw (corrosion resistant)installed through flange into framingFour 18 ga. X 1/2"long X 1/4" widecorrosion resistantcrown staples,equally spaced inone row16Corner TabWood Stud(minimum G=0.42)Minimum APA rated7/16" OSBMinimum 20gauge steelOn each flange, Install one 6dcorrosion resistant siding nail throughflange into framingOn each flange, Install two 4d ringshank corrosion resistant siding nailsthrough flange into framingOn each flange, Install one No. 8 X 1"long X 0.323" head diameter screw(corrosion resistant) through flangeinto framingFor each piece oftrim, install Four 18ga. X 1/2" long X1/4" wide corrosionresistant crownstaples, equallyspace in two rows20Wind-Borne Debris Region: “Supplemental fasteners may be necessary when installing tabs in a Wind-Borne Debris Region, please callTechnical Services 800-942-7343 with any questions.”TR1120_P4/5 6/13

CUT EDGE TREATMENTCaulk, paint or prime all field cut edges. James Hardie touch-up kits are required to touch-upColorPlus products.CAULKINGFor best results use an Elastomeric Joint Sealant complying with ASTM C920 Grade NS, Class 25or higher or a Latex Joint Sealant complying with ASTM C834. Caulking/Sealant must be appliedin accordance with the caulking/sealant manufacturer’s written instructions. Note: OSI Quad aswell as some other caulking manufacturers do not allow tooling.PAINTINGDO NOT use stain, oil/alkyd base paint, or powdercoating on James Hardie ® Products. James Hardieproducts must be painted within 180 days for primedproduct and 90 days for unprimed. 100% acrylictopcoats are recommended. Do not paint when wet.For application rates refer to paint manufacturersspecifications. Back-rolling is recommended if thesiding is sprayed.COLORPLUS ® TECHNOLOGY CAULKING, TOUCH-UP & LAMINATE• Care should be taken when handling and cutting James Hardie ColorPlus products. During installation use a wet soft cloth or soft brush to gently wipeoff any residue or construction dust left on the product, then rinse with a garden hose.• Touch up nicks, scrapes and nail heads using the ColorPlus ® Technology touch-up applicator. Touch-up should be used sparingly.If large areas require touch-up, replace the damaged area with new HardiePlank ® lap siding with ColorPlus Technology.• Laminate sheet must be removed immediately after installation of each course.• Terminate non-factory cut edges into trim where possible, and caulk. Color matched caulks are available from your ColorPlus ® product dealer.• Treat all other non-factory cut edges using the ColorPlus Technology edge coaters, available from your ColorPlus product dealer.Note: James Hardie does not warrant the usage of third party touch-up or paints used as touch-up on James Hardie ColorPlus products.Problems with appearance or performance arising from use of third party touch-up paints or paints used as touch-up that are not James Hardie touch-up, will notbe covered under the James Hardie ColorPlus Limited Finish Warranty.PAINTING JAMES HARDIE ® SIDING AND TRIM PRODUCTS WITH COLORPLUS ® TECHNOLOGYWhen repainting ColorPlus products, James Hardie recommends the following regarding surface preparation and topcoat application:• Ensure the surface is clean, dry, and free of any dust, dirt, or mildew• Repriming is normally not necessary• 100% acrylic topcoats are recommended• DO NOT use stain, oil/alkyd base paint, or powder coating on James Hardie ® Products• Apply finish coat in accordance with paint manufacturers written instructions regarding coverage, application methods, and application temperature• DO NOT caulk nail heads when using ColorPlus products, refer to the ColorPlus touch-up sectionRECOGNITION: HardieTrim boards may be installed as an equal alternative to conventional trim permitted for use in; 2006, 2009, & 2012 International Building Code, Section 1402.1, and the 2006, 2009, & 2012International Residence Code for One - and Two - Family - Dwellings, Section R703.1.© 2013 James Hardie Building Products. All rights reserved.TM, SM, and ® denote trademarks or registered trademarks ofJames Hardie Technology Limited. is a registered trademarkof James Hardie Technology Limited.TR1120_P5/5 6/13