ModWood New Zealand Technical and Installation Guide

Transcription

1 PTO Pge 1 ModWood New Zelnd Technicl nd Instlltion Guide These guidelines should be red in conjunction with the New Zelnd Building Code (NZBC). Cluses tht pply to open, sltted decking nd blcony construction re: B1 Structure B2 Durbility D1 Access routes E2 Externl moisture (wterproofing to the building envelope) F2 Hzrdous building mterils (glss brriers) F4 Sfety from flling When building deck plese refer to the following stndrds: AS/NZS 1170, NZS 3602, NZS 3603,NZS 3604, NZS 3605, NZS 3640 nd NZS Other recommended references include BRANZ Build 139 Supplement: Timber Decks. Any deck or blcony 1.5 metres or more bove clered ground level requires building consent. However, even if building consent is not required, construction must still comply with NZBC requirements. Fixings nd Fstenings Hot dip glvnised steel nils nd screws mybe used to fix decking (NZS 3604:2011 Tble 4.3), but note 4 sttes, tht where timber hs been treted with ACQ or CuAz preservtive, minimum type 304 stinless steel or silicon bronze fixings must be used nd tht stinless steel nils should be nnulr grooved to provide sufficient withdrwl resistnce. Instll ModWood decking with 12 mm minimum gp between the building cldding nd the decking for dringe nd mintennce. Corrosion zones In zone B use of hot dipped glvnised fixings when instlling ModWood is possible s long s the requirements of NZS 3604:2011 Tbles 4.1 nd 4.3 re met. In zone C use of stinless steel (minimum grde 304) is conservtive decision which we recommend, however should you decide to use hot dipped glvnised steel fsteners when instlling ModWood the requirements of NZS 3604:2011Tbles 4.1 nd 4.3 must still be met. In Zone D & E, tble 4.1 requires ll structurl fixings in sheltered nd exposed loctions to be stinless steel (minimum grde 304) Slip resistnce In public res, it is recommended tht ModWood decking be lid t right ngles to the min direction of pedestrin trffic. A wter bsorbing mt my be necessry round swimming pool surrounds, pool rmps nd stirs leding to wter. Stndrds Austrli HB 198:2014 Tble 3B provide guidnce for pedestrin surfces for prticulr pplictions ModWood 137mm hs slip resistnce clssifiction of R11 rting ModWood hs lso been tested to the Dry Floor Friction Slip Resistnce Test AS 4586:2013 nd chieved clssifiction of D1 with men coefficient of friction of 0.6 which meets the criteri of D1 Sfety from flling When instlling stirs, elevted decking tht my require hndrils nd/ or blustrding then you will need to consult with suitbly qulified engineer on the regultory sfety requirements in these circumstnces. EXTERNAL STAIRS on the ccess route into house my provide ccess to deck or cross sloping site. If they re prt of the min ccess route to the house, they must comply with NZBC cluse D1 Access routes. The Acceptble Solution D1/AS1 is quite prescriptive, including requirements for stir pitch, riser height, tred depth, projections or nosing s, where open risers my be used, stir width, hndrils nd slip resistnce. Deck Brriers Informtion tht needs to be considered, if you re building deck or rmp where someone could fll verticlly one metre or more then you must comply with NZBC Cluse F4. In 2012, the Deprtment of Building nd Housing (now Ministry of Business, Innovtion nd Employment Building nd Housing) published Guidnce on brrier design, which gives guidnce nd recommendtions on designing nd instlling Building Code-complint brriers. As of December 2012, timber brrier complying with prgrph of the Guidnce on brrier design meets the Building Code cluse F4 nd B2 requirements. Other brriers will need specific engineering design. Brrier elements- Brriers for residentil decks must: be continuous where the fll height is over 1.0 m be t lest 1.0 m high hve openings tht prevent 100 mm dimeter sphere pssing through hve less thn 15 mm gps between horizontl rils hve the top of the brrier t lest 760 mm bove fixed set hve no shrp edges or projections. Cre nd Mintennce This document cn be reviewed on the ModWood website. ModWood is CodeMrk New Zelnd certified, Certificte Number CMA-CMA40210 nd it: proves it meets Building Code performnce requirements ensures it is cpble of performing s intended stremlines the building consent nd inspection process CodeMrk is unchllengeble nd hs legl sttus equivlent to tht of n Acceptble Solution or Verifiction Method. Building consent uthorities (BCAs, usully councils) must ccept CodeMrk certified product s complying with the New Zelnd Building Code when it is used in building work, s long s the product is specified for use in ccordnce with the certificte. A copy of the CodeMrk Certificte, cn be down loded off the ModWood website. CMA CM40210

2 PTO Pge 2 screening Fixing Instructions for ModWood s Screening The following informtion provides guidnce on instlltion for screening nd fencing pplictions. Plese note ModWood is designed for cosmetic screening not brrier or ril pplictions. As we cnnot cover ll situtions should you hve ny specific questions with regrds to your instlltion plese contct ModWood directly. 68x17mm 88x23mm 137x23mm Number of fsteners per upright Continuous (mm)* Centre to centre spn (ModWood instlled on edge) b Single (mm)* Centre to centre spn (ModWood instlled on edge) c Centre to centre spn (ModWood instlled on flt) (mm) d Minimum clernce from wll (mm)* e Minimum side by side gp (mm)* f Bords instlled verticlly* - mx. distnce between rils (mm) g Minimum ground clernce (mm) h Minimum clernce t bord end from fixed structure (mm) i End butt gp (mm) j Mximum overhng (mm) Single spn use 2 fsteners 1. Single spn b e 2. Continuous spn h j i 3. Instlled verticlly 4. Instlled close to wll 5. Instlled on flt. ModWood cn be instlled on top of or under the frme. (ensure sub frme is dequtely engineered) j f f d c j g

3 PTO Pge 3 screening Typicl Fstenings used with ModWood Up to 23 mm thick bords Fixing to timber - 8G-10 x 50 mm countersunk hed screws mm x 50 mm dome hed^ twist shnk nils Nil guns^ Fixing to steel - C2.5 x 52 Dome R SS Coil Nils (Ring shnk for softwood) - C2.5 x 52 Dome S SS Coil Nils (Screw shnk for hrdwood) - 10G-10 x 40 mm SDS (Self Tpping Tek) screws - non wing tek Check tht fstener is suited for the site conditions. Nil gun not preferred method. ModWood Therml Expnsion Properties Fixing tip The temperture of ModWood bord sitting in full sun for length of time is pprox C wrmer thn the mbient ir temperture. As ModWood expnds in het nd sun, to void building stress into your screen nd hving possible lengthwys shrinkge, it is best to fix your screening bords when the mbient temperture is less thn 25 C nd when the bords re not sitting in full sun (see coefficient of therml liner expnsion on our website.) It is importnt not to leve bords lying in full sun for long periods of time prior to instlltion. Conversely fixing screening bords in mbient tempertures significntly colder thn the verge men temperture for your region my lend to incresed deflection during wrmer periods. ModWood Instlled with KlevKlip Conceled Fixing System ModWood must not be instlled over hed with KlevKlip i.e. ceiling or soffit pplictions. *If ModWood is instlled using the KlevKlip conceled fixing system this llows 4 mm side by side gp which is cceptble provided:- minimum clernce from wll must be t lest 150 mm nd the upright spn must be reduced to 800 mm centres for continuous or single spn instlltions. Mximum height of the screen from ground level if KlevKlip system used is 2400 mm. Where butt joints re required with KlevKlip system - doubling the posts nd clips re required t these points. Refer to KlevKlip website for fixing nd dhesive instructions: ^ Do not use nils for 137 mm bord Generl When fixing, ensure tht you strt from one end nd then fix progressively long the bord length. This will ensure tht you ren t building stress into the bord, which my occur if you fix off the bord ends first nd then fix off the intermediry posts. Pre-drilling nd countersinking is lwys essentil. Fixing too close to bord end will cuse splitting - no closer thn 15 mm nd no closer thn 20 mm from edge. Do not overdrive fsteners. The hole drilled must be slightly greter thn the outside dimeter of the screw thred. Screw down with low torque, tke prticulr cre t ends of the bords. Ensure the hed of the screw finishes flush with bord surfce. Fsteners in low corrosion res must hve glvnised coting or equivlent. In high corrosion res use stinless steel fsteners. Fsteners must be instlled perpendiculr to the bord fce i.e. do not skew fix. Use only fixings which comply with New Zelnd Stndrds ModWood must not be used s prt of the frme or used s structurl element. ModWood cn be instlled overhed so long s it is fce fstened with screws. Verticl Upright (post) Uprights must be rigid nd fixed t bse eg. min 65 x 65 mm steel or 90 x 90 mm timber. Do not use ModWood for the upright. Posts must be instlled perpendiculr, prllel nd squre to ech other - nd must hve sufficient rigidity to remin so during service. Note: Footings should be s per locl council regultions. Plese note: Due to the moisture normlistion of the wood fibres in the product, ModWood screens cn in some circumstnces show some deflection between the uprights.

4 PTO Pge 4 Fixing Instructions for ModWood Flme Shield Storge nd hndling Store ModWood in flt, dry re under roof nd off the ground. Alwys crry ModWood on edge. Ventiltizon Good ventiltion for your deck is essentil. Check our chrt for ground clernce informtion. Do not prevent irflow by seling off deck ends, for exmple with grden beds, trees or solid objects. Instlltion Fixings must not be closer thn 15 mm from the end of the bord nd do not skew fsten. Double fix on ech joist. Fsten 20mm from outside edge of the bord. When butt joining top fix bords it is recommended to hve 45 mm joists. Stgger joints do not crete sem of joins. Screw fixing Pre-drilling nd countersinking is essentil when fixing with screws. Drill-bits used must be t lest the outside dimeter of the screw thred (preferbly slightly oversize). As minimum, glvnised coted screws re recommended for low corrosion res. Use stinless steel screws for high corrosion res. Screw down with low to medium torque. Do not overdrive screws, prticulrly ner the ends of the bords. Screws should finish flush with top of bord. Nil fixing Pre-drill with drill-bit lrge enough to provide slight clernce on the shnk, then fix with dome-hed glvnised nil. Do not punch the nil heds under the surfce. In high corrosion res, we recommend stinless steel decking nils (pre-drilling hole with clernce is still required). Nil Guns As with ll decking, the preferred methods of fixing re drill nd screw, or drill nd nil. Should you decide to use nil gun, you need to stisfy yourself tht nil penetrtion nd retention is stisfctory. Such tests should be crried out prior to instlltion. The preferred nil gun is the Pslode Duo-Fst CNP 65 Coil Niler. Use dome hed stinless steel decking nils. Double fix on ech joist. We do not recommend nil guns for use on decking greter thn 23 mm thickness, or for use on steel joists. When fixing bords by nil gun, pre-drilling nd hnd niling is essentil for ech fstener within 50 mm of the end of bord. Conceled Fixing with ModWood KlevKlip is the preferred method of using conceled fixing with ModWood. For ll informtion on KlevKlip, plese contct: Plese note tht when using conceled fixing products, it is still importnt to ensure tht the ModWood stndrd gp spcings for side-by-side, butt-joins, nd end spcings re still strictly dhered to. Importnt plese check you use the correct model KlevKlip to fit the chosen ModWood bord. Refer overlef. Flme Shield, is certified to AS with BAL-40 rting. Flme Shield cn be used in bushfire prone res tht hve bushfire ttck level (BAL) up to nd including BAL-40 (AS ). Flme Shield certifiction llows for the sub-floor spce to be either enclosed or un-enclosed. (Plese refer to ModWood ventiltion requirements). Flme Shield bords must not overhng or be cntilevered pst the joist t ny point. The sub-frme joists nd berers need to be constructed from non-combustible mterils or one of the bushfire-resisting timbers (refer to AS see Appendix F) which s t December 2011 includes Spotted Gum, River Red Gum, Blckbutt, Silvertop Ash, Red Ironbrk, Merbu, Turpentine. With this construction system, Flme Shield hs been certified to comply with AS Section 8 Construction for Bushfire Attck Level 40 (BAL-40). Flme Shield is mnufctured to R11 (AS/NZS 4586:2013). Flme Shield hs n ink jet messge repeted t pprox.1000 mm intervls long its edge Flme Shield BAL-40, AS This messge should be sighted on ech bord prior to instlltion. It is lso highly recommended tht copy of AS be obtined prior to construction in bushfire prone res. A copy of this stndrd cn be purchsed from SAI Globl. F A C ModWood Fixing Specifictions E exmple of zig zg fixing A ground clernce A ground B clernce joist centres (mx distnce) B joist centres (mximum distnce) C end-gp (butt join) D gp - side by side C end - gp (butt join) E minimum distnce D gp from - side edge by side of bord for fixing F end-gp to solid E minimum structure distnce Refer from to edge chrt of bord belowfor f F end - gp to solid structure Decking width (mm) Dimensions 137x23 mm A minimum ground clernce 300 A minimum clernce over concrete 50 B joist centres (mx distnce) 450 C minimum end-gp (butt join) 2 D minimum gp - side by side 4 E minimum distnce from edge of bord for fixing 20 F minimum end-gp to solid structure 4 screws (pre-drill nd countersink) yes dome-hed nils (pre drill) yes nil gun cceptbility * yes suitbility for fixing to steel substructure refer to website fixing over concrete refer to website * Use only dome-hed nils from coil-nil gun. Pre-drill nd hnd nil when within 50 mm of end of bord. Not our preferred fixing method.* Do not use nil gun within 50 mm of end of bord. In ll cses, when screwing down do not overdrive screws. Fix with low to medium torque. Do not punch nil-heds under surfce of bord. Fixing too close to the end of the bord will cuse splitting. DO NOT fix within 15 mm of end of bord. B D

5 PTO Pge 5 ModWood Therml Expnsion Properties Fixing Tip The temperture of ModWood bord sitting in full sun on wrm to hot dy for length of time is pprox C wrmer thn the mbient ir temperture. As ModWood expnds in het nd sun, to void building stress into your deck nd hving possible lengthwys shrinkge, it is best to fix your decking bords when the mbient temperture is less thn 25 C nd when the bords re not sitting in full sun (see coefficient of therml liner expnsion on our website). ModWood Decking Spcers ModWood decking spcers, s seen below, hve been developed to mke your instlltion esier, nd in line with ModWood fixing instructions. Note: Every pck of ModWood comes with 10 free spcers (used s strpping holders on the corners of full pcks). Extr spcers re vilble from your locl ModWood retiler, or by contcting the ModWood distributor in your stte. ModWood Decking Spcer ModWood Decking Spcer - End Gp Typicl Fstenings used with ModWood Up to 23 mm thickness bords Fixing to timber - 8G-10 x 50 mm countersunk hed screws mm x 50 mm dome hed twist shnk nils Nil guns - C2.5 x 52 Dome R SS Coil Nils (Ring shnk for softwood joists) - C2.5 x 52 Dome S SS Coil Nils (Screw shnk for hrdwood joists) Fixing to steel - 10G-10 x 40 mm SDS (Self Tpping Tek) screws - non wing tek Generl Pre-drilling nd countersinking is essentil Fixing too close to bord end will cuse splitting no closer thn 15 mm nd no closer thn 20 mm from edge. Do not overdrive fsteners The hole drilled must be slightly lrger thn the outside dimeter of the screw thred or nil shnk Fsteners must be instlled perpendiculr to the bord fce, ie. do not skew fix Screw down with low torque, tke prticulr cre t ends of the bords Ensure the hed of the screw finishes flush with bord surfce Fsteners in low corrosion res should hve glvnised coting or equivlent. In high corrosion res stinless steel fsteners re recommended. Use only fixings which comply with New Zelnd Stndrds ModWood must not be used s prt of the frme or used s structurl element. 12 guge screws my be used on 137 mm bords only. Fsteners must not be locted closer thn 20 mm from bord ends. This will necessitte double joists or lminting block on those joists where end butt joins will be locted Conceled Fixing with KlevKlip It is criticl tht the correct model of KlevKlip is used with the chosen ModWood bord. The Nturl Grin Collection of solid bords hve grooves on ech edge nd suit the following KlevKlip models. ModWood Decking Spcer - Side by Side Gp 137 mm with groove on edge Non Powder Coted KT137G Top Fix Clip Glvnised KT137S Top Fix Clip S/Steel 137 mm with groove on edge Powder Coted KT137GPC Top Fix Clip Glvnised KT137SPC Top Fix Clip S/Steel Plese refer to for fixing detils nd dhesive instructions. ModWood Decking Fixing Instructions over concrete Refer to website for specific instructions on decking pplictions over concrete.

6 PTO Pge 6 Fixing Instructions for ModWood Refer to seprte Flme Shield fixing instructions when instlling Flme Shield Storge nd hndling Store ModWood in flt, dry re under roof nd off the ground. Alwys crry ModWood on edge. Ventiltion Good ventiltion for your deck is essentil. Check our chrt for ground clernce informtion. Do not sel off deck ends, preventing irflow, including grden beds, trees or solid objects. Instlltion Fixings must not be closer thn 15 mm from the end of the bord nd do not skew fsten. Double fix on ech joist. Fsten 20 mm from outside edge of the bord. You cn lso fsten the 88mm decking bords using one screw/nil per joist in zig zg pttern - see digrm (you will still need to fsten two screws/nils on the ends of ech bord). When butt joining top fix bords it is recommended to hve 45 mm joists. Do not crete sem of joins. Screw fixing Pre-drilling nd countersinking is essentil when fixing with screws. Drill-bits used must be of t lest the outside dimeter of the screw thred (preferbly slightly oversize). We recommend s minimum, glvnised coted screws for low corrosion res nd stinless steel screws for high corrosion res. Screw down with low to medium torque. Do not overdrive screws, prticulrly ner the ends of the bords. Screw should finish flush with top of bord. Nil Guns Should you decide to use nil gun, you need to stisfy yourself tht nil penetrtion nd retention is stisfctory. Such tests should be crried out prior to instlltion. As with ll decking, we believe the preferred methods of fixing re drill nd screw, or drill nd nil. Our preferred nil gun is the Pslode Duo-Fst CNP 65 Coil Niler. Use dome hed stinless steel decking nils. Double fix on ech joist. We do not recommend nil guns for use on decking greter thn 23 mm thickness, nor for use on steel joists. Pre-drilling nd hnd niling is essentil when fixing bords by nil gun within 50 mm of end of the bord. ModWood Fixing Specifictions Nil fixing Pre-drill with drill-bit lrge enough to provide slight clernce on the hole, then fix with dome-hed glvnised nil. Do not punch the nil heds under the surfce. In high corrosion res, we recommend stinless steel decking nils (pre-drilling clernce hole still required). Conceled Fixing with ModWood KlevKlip is the preferred method of using conceled fixing with ModWood. For ll informtion on KlevKlip, plese contct Plese note tht when using conceled fixing products, it is still importnt to ensure tht the ModWood stndrd gpping spcing s for sideby-side, butt-joins nd end spcing s re still strictly dhered to. Importnt. Plese check you use the right model KlevKlip to fit the right model of ModWood. Refer overlef. illd gh A ground clernce B joist centres (mx distnce) C end-gp (butt join) D gp - side by side E minimum distnce from edge of bord for fixing F end-gp to solid structure Refer to chrt below decking solid (mm) decking wide (mm) mrin bord solid (mm) Dimensions 88 x 23 mm 137 x 23 mm 137 x 32 mm A minimum ground clernce A minimum clernce over concrete B joist centres (mx distnce) ** C minimum end-gp (butt join) D minimum gp - side by side E minimum distnce from edge of bord for fixing F minimum end-gp to solid structure screws (pre-drill nd countersink) yes yes yes dome-hed nils (pre-drill) yes yes yes nil gun cceptbility* yes yes no zig-zg fixing cceptbility - not suitble for nil guns yes no no suitbility for fixing to steel structure refer to website refer to website refer to website fixing over concrete refer to website refer to website refer to website * - Use only dome-hed nils from coil-nil gun. Pre-drill nd hnd nil when within 50 mm of end bord. Not our preferred fixing method. ** mm centres for commercil pplictions. In ll cses, when screwing down do not overdrive screws. Fix with low to medium torque. Do not punch nil-heds under surfce of bord. Fixing too close to the end of the bord will cuse splitting. DO NOT fix within 15 mm of end of bord.