E2 Redway flashings
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Installation Guide for MASONS models including: BATNVENT 45x18x1800 Universal Ventilated Battens, BATNVENT 45x18x1800, Universal Ventilated Battens, Ventilated Battens, Battens
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DocumentDocumentMASONS UNIVERSAL VENTILATED BATTENS DESIGN AND INSTALLATION GUIDE V1 Aug 2024 Wall and Roof Batten Roof Batten General and product information DESCRIPTION MASONS VENTILATED PLASTIC ROOF BATTENS AND UNIVERSAL VENTILATED PLASTIC WALL & ROOF BATTENS Available in two sizes Masons Universal Ventilated battens are made of tough nonabsorbent polypropylene and have a self-adhesive strip for convenient placement prior to nailing off. Ventilated Battens used to form a cavity allowing the free flow of air and moisture assisting with effective ventilation of a wall or roof cavity*. The cellular construction is non-conductive, capillary action resistant and dimensionally stable and assists with reducing thermal bridging. They are robust with a high compressive strength so are effective packers. They are not suitable to be used as structural battens. MASONS ROOF AND WALL BATTEN 18MM X 45 X 1.8M Product code BATNVENT 45x18x1800 Product code BATNVENT 45X11X1800 Sold as a Box of 25 battens Sold as a box of 50 battens WALLS Cavity batten to create drained cavity for exterior walls. > Fix Masons Universal Ventilated Battens with hand or gun driven Batten Nails, fixed vertically or horizontally and around joinery openings as required by E2 AS1 and the cladding manufacturer. > Adjust nail guns to seat nails flush, or just proud, avoid over driving and rupturing the top layer. > Masons Universal Ventilated Battens may be used with all Masons underlay products for roof and wall application. They are likely to be suitable for use with many other underlays except where specified otherwise by the underlay or cladding suppliers. > Use in conjunction with Masons Redway E2 cavity closers. Do not use at the wall cavity roof space junction, use solid batten instead to block off the wall cavity from the roof space. info@mpb.co.nz 0800 522 533 www.mpb.co.nz 1 Masons Universal Ventilated Battens Design and Installation Guide V1 Aug 2024 WHEN USED AS A CAVITY BATTEN OVER UNI SYSTEMS > When used as cavity batten over UNI PLUS or UNI PRO Flexible Air Barrier System use the specific tested nail pattern for the wind zone and stud spacing available from Masons NZ. A specific tested installation method should be used. > Fix the batten over UNI PLUS or PRO using Ecko Round Head Hammahand 2.8 x 65-mm SS or Galv Batten Nails driven by an Ecko Hammahand Weather Board coil nailer. Adjust the gun depth gauge, and air pressure so that the nails are seated flush, or slightly proud. The top layer of the batten must not be broken. Calibrate regularly though out the fixing of the battens. > Use of other fixing guns is not tested and is not permitted to fix Masons Universal Ventilated Batten as part of the UNI system. Hammer or hand fitting is permitted. Horizontally fixed Masons Universal Plastic Ventilated Batten SPACING TO SUIT CLADDING SYSTEM NOTE: - HORIZONTAL MASONS UNIVERSAL PLASTIC VENTILATED BATTENS - DO NOT PROVIDE ADDITIONAL FIXING COMPARED WITH UNI CAP NAILS - STUD SPACING MUST BE INSTALLED IN ACCORDACE WITH MASONS UNI UNI PLUS FIXING CHART FOR THE RELEVANT WIND ZONE - UNI CAP NAILS AND HORIZONTAL MASONS UNIVERSAL PLASTIC VENTILATED BATTENS MAY BE USED IN CONJUNCTION. MAXIMUM SPACING BETWEEN UNI CAP NAILS AND BATTENS FOR THE WIND ZONE MUST BE OBSERVED - FIT BATTENS AFTER TACKING UP UNI - UNI PLUS WITH UNI CAP NAILS HORIZONTAL MASONS UNIVERSAL PLASTIC VENTILATED BATTEN PLAN PLACEMENT OF UNI CAP NAILS TO NOT FOUL BATTENS FRAMING AT CENTER SETOUT AS PER UNI - UNI PLUS FIXING CHART UNI - UNI PLUS FIXED TO FRAMING WITH HORIZONTAL MASONS UNIVERSAL PLASTIC VENTILATED BATTEN, NAILED HORIZONTALLY USING GALVANISED OR STAINLESS STEEL ECKO HAMMAHAND 60 x 2.8g ROUND HEAD RING SHANK BATTEN NAILS MASONS E2 REDWAY UPVC CAVITY CLOSER info@mpb.co.nz 0800 522 533 www.mpb.co.nz 2 Masons Universal Ventilated Battens Design and Installation Guide V1 Aug 2024 Masons Universal Plastic Ventilated Batten 45mm 1800mm OPTIONAL - MASONS UNIVERSAL PLASTIC VENTILATED BATTEN WITH SELF ADHESIVE STRIP SELF ADHESIVE STRIP MASONS UNIVERSAL PLASTIC VENTILATED BATTEN NOTE: - BATTENS MAY BE FIXED BY HAND, OR BY USING AN ECKO HAMMAHAND PNEUMATIC COIL NAILER - ADJUST PRESSURE OR DEPTH SETTING OF THE ECKO HAMMAHAND GUN TO ACHIEVE CORRECT SEATING OF THE ROUND HEAD BATTEN NAIL - CALIBRATE HAMMAHAND REGULARLY THROUGHOUT THE JOB - IF A NAIL IS OVER DRIVEN - CALIBRATE GUN AND RE-NAIL WITHOUT RUPTURING THE TOP LAYER OF THE BATTEN - MIN. NAIL SPACING IS 200mm TO MAX. 300mm FOR ALL WIND ZONES AND FRAMING CENTRES WHEN FIXED VERTICALLY 18mm OVER DRIVEN · TOP PLASTIC LAYER RUPTURED · PROUD JUST FLUSH · TOP PLASTIC LAYER INDENTED - NOT RUPTURED · UNI - UNI PLUS GALVANISED OR STAINLESS STEEL ECKO HAMMAHAND 60 x 2.8g ROUND HEAD RING SHANK BATTEN NAILS TIMBER FRAMING Vertical Masons Universal Plastic Ventilated Battens *any wind zone - any stud spacing (excluding SED) SPACING TO SUIT CLADDING SYSTEM VERTICAL MASONS UNIVERSAL PLASTIC VENTILATED BATTEN NAILED AT MIN. 200mm TO MAX. 300mm CENTRES USING GALVANISED OR STAINLESS STEEL ECKO HAMMAHAND 60 x 2.8g ROUND HEAD RING SHANK BATTEN NAILS PLAN PLACEMENT OF UNI CAP NAILS TO NOT FOUL BATTENS CAVITY SPACERS - MASONS UNIVERSAL PLASTIC VENTILATED NAILED HORIZONTALLY AT MIN. 200mm TO MAX. 300mm CENTRES USING GALVANISED OR STAINLESS STEEL ECKO HAMMAHAND 60 x 2.8g ROUND HEAD RING SHANK BATTEN NAILS FRAMING AT CENTER SETOUT AS PER UNI - UNI PLUS FIXING CHART UNI - UNI PLUS FIXED TO FRAMING WITH HORIZONTAL MASONS UNIVERSAL PLASTIC VENTILATED BATTEN, NAILED HORIZONTALLY USING GALVANISED OR STAINLESS STEEL ECKO HAMMAHAND 60 x 2.8g ROUND HEAD RING SHANK BATTEN NAILS USE WRAP STRAP AT 300mm CTRS TO RESTRAIN UNI - UNI PLUS OVER 600mm STUD CTRS. WRAP STRAP IS NOT REQUIRED FOR OTHER STUD CENTERS OR FOR BRICK VENEER WHEN FITTED TAUT NOTE: - UNI - UNI PLUS IS TACKED TO THE FRAMES USING UNI CAP NAILS - FIX BATTENS WITHOUT DELAY - BATTENS ARE THE PRIMARY FIXING MASONS E2 REDWAY UPVC CAVITY CLOSER UNI - UNI PLUS UNI CAP NAILS MASONS E2 REDWAY UPVC CAVITY CLOSER TO SUIT CLADDING. SEE MASONS WEBSITE OR VISIT E2FLASHINGSOLUTIONS.CO.NZ info@mpb.co.nz 0800 522 533 www.mpb.co.nz 3 Masons Universal Ventilated Battens Design and Installation Guide V1 Aug 2024 WHEN USED OVER OTHER FLEXIBLE OR RIGID WALL UNDERLAYS Fix with Batten Nails or Wafer head screws in keeping with the underlay, or cladding manufacturers requirements for fixing non-structural, non-fire stopping cavity battens. Avoid breaking through the top layer skin of the batten. ROOFS > Ventilated Roof Battens part of a vented roof cavity design. > Why use ventilated roof battens? There is a growing understanding that unventilated cold roof spaces can result in excessive condensation with resulting wet insulation and framing timbers. This is well understood in many countries where ventilation in the roof space is seen as essential for dry framing, insulation performance and to reduce the corrosion risk to metal claddings or components. Cold roof design is very common in New Zealand, the insulation is installed over the ceiling lining, and the roof cladding, underlay and support mesh rise and fall in temperature with sunshine hours and ambient external temperature. Very few residential or light commercial ceiling have a vapour blocker layer under the insulation to stop moisture diffusion into the roof attic space from the normal activities of occupants. As the air in the attic space cools overnight or on cold days moisture in the air condenses at the dew point and forms on the underside of the (cold, uninsulated) roof cladding. The roof underlay absorbs the condensation and releases it again back into the air in the attic roof space when the sun warms the roof cladding and attic space. However, If moisture rich air in the attic roof space cannot escape, excessive condensation can form overwhelming the underlay and raining condensation onto the insulation and roof framing. DESIGN Masons Universal Ventilated Cavity Battens in 11mm or 18mm thickness may be used as part of a passive ventilated roof space design. Passive roof space ventilation uses the stack effect and wind movement to create air movement though the roof space carrying out moisture laden air. The design should provide for air to flow enter the roof space at the eaves, across any bulk insulation pressing against the underlay and roof cladding near the eaves, along the line of the underlay to exit at the ridge. Eaves vents may be sized slightly larger than the ridge vents and must always be used in conjunction. Care should be taken when designing passive type roof ventilation in corrosion zones such as geothermal or salt spray. In these zones Passive-stack ventilation may need to be avoided. Attention should be given to blocking vapour entering the roof space, and or increased ventilation for the occupied space among other design choices. info@mpb.co.nz 0800 522 533 www.mpb.co.nz 4 Masons Universal Ventilated Battens Design and Installation Guide V1 Aug 2024 EXAMPLES Masons 11mm Universal Ventilated Batten has a net free open area of 6800mm2 per LM Masons 18mm Universal Ventilated Batten has a net free open area of 12300mm2 per LM Use of a Masons Redway Cavity Closer as a baffle will regulate net free open area to 1000mm2 per LM When calculating the net free open area required for adequate passive ventilation the following ratios are suggested: > For Duo pitched roofs with a roof slope of less than 10 degrees, and all skillion, or mono pitched roofs 1/150 ratio more ventilation. > For Duo pitched roofs 10 degrees roof slope and greater 1/300 ratio less ventilation. > For Duo pitched roofs Ridge and Eaves LM are added together and doubled. > For Mono pitch and skillion roofs Ridge and Eaves LM are added together (not doubled). The formula for calculating the open area and selection of the Masons Ventilated Batten for a duo pitched roof with a roof slope greater than 10 Degrees is as follows: > Measure the length of Eaves and Ridges in LM x 2 (do not double for Skillion roofs). > Calculate the m2 of Ceiling including soffits in M2. > Divide the ceiling area in M2/300 for a 1/300 passive ventilation ratio (if using a 1/300 ratio) to achieve M2 of ventilation open area required. > Multiply by 1000,000 to convert to mm2 of net free open area. > Divide this figure by the Net free open area of the Masons Ventilated Batten to determine the Masons Universal Batten thickness that is required to provide ventilation at the eaves and ridge. For example, The building has an Eaves and Ridge length x 2 of 72 LM of 48 with an ceiling and soffit area of 180M2. 180/300 = .6 x 1000,000 = 600,000mm2. 600,000/72LM means a net free open area per LM of 833.33 is required at ridge and eaves. Masons 11mm Universal Ventilated Batten is more than sufficient to meet this net free open area demand. This is the batten thickness to select. info@mpb.co.nz 0800 522 533 www.mpb.co.nz 5 Masons Universal Ventilated Battens Design and Installation Guide V1 Aug 2024 The roof pitch and the wind at the buildings site should be considered when selecting passive roof space ventilation. Mono pitch roofs and roof pitches below 10 Degree pitch benefit less from the `stack effect' and require more passive ventilation free open area consider Masons Universal 18 mm ventilated battens, or 11 m battens double stacked. The amount of wind the roof is exposed to substantially affects roof passive ventilation effectivness. For windy sites with duo pitched roofs steeper than 10 Degrees slope a passive ventilation ratio of 1:600 may be adequate. Masons Redway cavity closers may be used to provide additional wind baffling on lower double pitched roofs or for roofs in wind zones High and above. Masons recommends designers read the MRM COP Ventilation of attic spaces https://www.metalroofing.org.nz/technical/ventilation-attic-spaces BRANZ have several guides or articles about cold roof ventilation and design. Google search `BRANZ roof ventilation'. The details and advice offered by Masons are of a general nature based on industry knowledge and practise. The building designer must always satisfy themselves that their design meets all requirements and are responsible for the final design. VENTILATED BATTEN OPEN AREA: Masons Ventilated Roof & Wall Batten 18 x 45mm x 1.8M Nominal Ventilation open area is 12300mm2 per Lm or 22140mm2 per 1.8 m length Masons Ventilated Batten Roof 11 x 45mm x 1.8M Nominal Ventilation open area 6800mm2 per Lm or 12240mm2 per 1.8 m length INSTALLATION Roof: > Install Masons Universal Ventilated Cavity Battens over the timber purlins before laying Masons or other underlays as specified, using the self-adhesive strip to temporarily fix the battens before overlaying with underlay, roof cladding and fixing off. Do not walk on or traffic battens held only by self-adhesive tape. > If the battens are to be trafficked, use flat Gav or SS head nails or screws fitted flush (avoid breaking the top surface of the batten) of sufficient length to penetrate the batten width, plus at least 35mm with sufficient gauge to fix battens firmly for light foot traffic whilst the underlay is being laid. Ensure the battens are mechanically fixed to purlins before trafficking and adjust fixing spacings to be firm underfoot, 400mm fixing spacing suggested, this may be adjusted by the installer but in all cases must be secure under foot if to be trafficked. info@mpb.co.nz 0800 522 533 www.mpb.co.nz 6 Masons Universal Ventilated Battens Design and Installation Guide V1 Aug 2024 Roof Ventilation AIRFLOW AIRFLOW AIRFLOW AIRFLOW AIRFLOW AIRFLOW PITCHED ROOF RIDGE DETAIL MUVB.03 AIRFLOW AIRFLOW ROOF EAVE DETAIL MUVB.02 MONO PITCHED ROOF EAVE DETAIL MUVB.04 Use in conjunction with Masons Insul-Baffle, insulation/underlay separator to ensure good air circulation near the eaves where insulation may press against the underlay. For more information see our product page. https://mpb.co.nz/product/insul-baffle Masons Insul-Baffle 50mm H x 650mm W x 6m L FIX WITH STAPLES, CLOUTS OR WAFER HEAD SCREWS 19MM OR 25MM WIDE MASONS WRAP STRAP MAY OPTIONALLY BE USED OVER THE TOP TO RESTRAIN MASONS INSUL BAFFLE IN WINDY CONDITIONS, OR IF ROOF INSTALLATION IS DELAYED - USE 2 OR 3 RUNS OF WRAP STRAP ARE SUGGESTED @ 600MM CRS WIDTH AT DESCRETION OF THE INSTALLER TOP CHORD OR RAFTER MASONS INSUL BAFFLE PLACED OVER TOP CHORD/ RAFTER PARALLEL TO AND FOR THE FULL LENGTH OF THE EAVES - USED TO PRESERVE AIR GAP BETWEEN INSULATION AND ROOF UNDERLAY WHERE BULK LOFTED INSULATION PRESSES AGAINST UNDERLAY AND ROOF CLADDING DO NOT STRETCH PRESERVE CRENULATIONS & SHAPE info@mpb.co.nz 0800 522 533 www.mpb.co.nz 7 Masons Insul Baffle 50mm H x 650mm W x 6m L Masons Universal Ventilated Battens Design and Installation Guide V1 Aug 2024 Typical Placement OPTIONAL - 2ND RUN OF INSUL BAFFLE ACCORDING TO PITCH AND INSULATION SPECIFICATION ROOF CLADDING 11MM OR 18MM MASONS UNIVERSAL VENTILATED BATTEN IF SELECTED SELECTED VHP MASONS ROOF UNDERLAY OR SIMILAR MASONS INSUL BAFFLE 50MM, MAY BE USED WITHOUT VENTILATED BATTENS EAVE OR ANTI FLUTTER FLASHING WITH HOOK SELECT GUTTER PROFILE TO COVER VENTILATED BATTEN GAP OPTIONAL - MASONS REDWAY TOP VENT TO VENTILATE CAVITY RDTV20 18MM MASONS UNIVERSAL VENTILATED BATTEN TO DRAIN VAVITY CLADDING AIRFLOW AIRFLOW AIRFLOW AIRFLOW AIRFLOW AIRFLOW EAVES AND RIDGE: Masons universal roof, or roof and wall battens may be used to provide air inflow and out flow of the roof space in conjunction with flashings and Redway cavity closers. Masons ventilated battens should be doubled spaced on the ridge vent under flashing, and aligned over the purlin and under the ridge cap to provide sufficient support to prevent indentation or buckling of the ridge cap when fixed off. Use an eaves or anti flutter flashing where required by E2 AS1 8.4.11, 8.4.12c Fig 45, or where the roofer wishes to proactively reduce the possible occurrence of underlay flutter. Masons support and suggests the incorporation of an anti-flutter flashing as good practice as the occurrence of underlay flutter is unpredictable and difficult to remedy later. The air cells in Masons 18mm ventilated batten are small enough to exclude vermin. A Masons Redway Cavity closer RDCC 19 or 21 may be considered when an additional weather deflector is required or for air flow regulation. Masons ventilated 11 mm batten also excludes vermin. Masons RDCC15 cavity closer may be considered when an additional weather deflector is required or for air flow regulation. MIB.02 info@mpb.co.nz 0800 522 533 www.mpb.co.nz 8 Masons Universal Ventilated Battens Design and Installation Guide V1 Aug 2024 Roof Eave Detail ROOF CLADDING SELECTED VHP MASONS ROOF UNDERLAY OR SIMILAR FIXING SPECIFIED TO ACCOUNT FOR THE THICKNESS OF MASONS UNIVERSAL VENTILATED BATTEN, EAVE FLASHING & CAVITY CLOSER BATTEN THICKENS +2MM 11MM OR 18MM MASONS UNIVERSAL VENTILATED BATTEN 19MM OR 21MM MASONS REDWAY CAVITY CLOSER, RDCC19 OR RDCC21 EAVE OR ANTI FLUTTER FLASHING WITH HOOK SELECT GUTTER PROFILE TO COVER 11MM OR 18MM GAP CREATED BY MASONS UNIVERSAL VENTILATED BATTEN MASONS INSUL BAFFLE MAY BE USED WITH OR WITHOUT VENTILATED BATTENS Pitched Roof Ridge Detail UNDERLAY DISCONTINUED TO ALLOW AIR MOVEMENT FIXING SPCIFIED TO ALLOW FOR MASONS VENTILATED BATTEN AND FLASHING AIRGAP ROOF CLADDING STOP END TO TROUGH AT TOP SELECTED VHP MASONS ROOF UNDERLAY OR SIMILAR AIRFLOW AIRFLOW AIRFLOW RIDGE CAP FLASHING PLACE MASONS VENTILATED BATTEN TO SUPPORT RIDGE CAP FLASHING MASONS REDWAY CAVITY CLOSER OVER CUSTOM RIDGE UNDER FLASHING FLASHING WITH SOFT EDGE OR PROFILE CUT MASONS VENTILATED BATTENS OVER ROOF PURLIN info@mpb.co.nz 0800 522 533 www.mpb.co.nz 9 Masons Universal Ventilated Battens Design and Installation Guide V1 Aug 2024 Mono Pitched Roof Eave Detail RIDGE CAP FLASHING WITH SOFT EDGE OR PROFILE CUT FIXING SPCIFIED TO ALLOW FOR MASONS VENTILATED BATTEN AND FLASHING ROOF CLADDING STOP END TO TROUGH AT TOP SELECTED VHP MASONS ROOF UNDERLAY OR SIMILAR AIRFLOW MASONS VENTILATED BATTENS OVER ROOF PURLIN MASONS REDWAY CAVITY CLOSER MAY OPTIONALLY BE USED UNDER MASONS UNIVERSAL BATTEN FLASHING CLADDING 18MM MASONS UNIVERSAL VENTILATED BATTEN AS SELECTED 24333 This document is uncontrolled in printed form. See www.mpb.co.nz for current version. Copyright © 2024 Masons. info@mpb.co.nz 0800 522 533 www.mpb.co.nz 10