Ventilation Profile 

1. ProWall Ventilated Angle Bead mechanically fixed through OSB into main timber studs
2. Breather membrane overlapping ProWall Ventilated Angle Bead
   
3. 75mm x 38mm treated timber battens fixed into main timber studs by screw fixing 

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Battens on Apertures 

1. Timber battens framing aperture 
2. 50mm gap between vertical battens and aperture framing battens
3. 15mm - 20mm gap in breaks between continuous vertical timber battens 
   

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Aperture flashing 

1. Flashing tape applied beneath window frame and sill prior to window installation 
2. Flashing wrapped around window jamb and head framing battens after window installation 
3. Flashing tape U channel formed above window head framing batten
   

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Casing bead 

1. ProBead PE12 fitted to face of timber battens creates level at base of system
   

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ProBoard fixing 

1. ProBoard installed horizontally in block bond style
2. 3mm spacings required between ProBoards 
   

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Screw fixings - 600mm centres 

1. Maximum 200mm centres on central battens 
2. Maximum 130mm centres on edge battens 

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Screw fixings - 400mm centres 

1. Maximum 160mm centres on central battens 
2. Maximum 120mm centres on edge battens 

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Elevation Fixing 

1. ProBoard fitted around apertures to avoid vertical or horizontal joints at corners
2. ProBoard joints minimum 150mm from corner of aperture
   

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Corner Fixing 

1. Corner ProBoards fitted alternately block bond 
2. ProBead NMAB to be bedded on at corner during render application

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Services

1. Battens fitted square around service 
2. Fire treated battens required for hot flue 
3. Continue 50mm vertical batten spacings from framing battens 
4. ProBoard surface cut to accommodate service 

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Vertical Expansion 

1. Expansion joints in substrate mimicked in timber battens and ProBoard 
2. ProBead EX6 profile installed on surface of ProBoard
   

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Horizontal Expansion 

1. Movement joints in substrate mimicked in timber battens and ProBoard 
2. ProBead PE12 installed below upper ProBoard as at base of system 
3. ProWall Slip Joint profile installed over surface of ProBoard

Note: Where no horizontal movement joint or vertical expansion joint exists provision should be made within the ProBoards so that no area exceeds 42m^² or 7.5m (linear) without a break

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Fire Break 

1. Stainless steel fire sill mechanically fixed into main timber studs blocking cavity 
2. Gap between lower ProBoard and sill allows air circulation 
3. Systems re-starts above stainless steel sill 
4. Intumescent strip installed between timber battens 

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System ventilation

1. ProWall Ventilation Panel installed at top of system below eaves to allow air circulation from cavity 
2. Cut ventilation panel hole in ProBoard prior to render application 
3. ProWall Ventilation Panel fitted after render application 

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