6.2.14 Wall ties and fixings
Wall ties and fixings shall adequately connect the cladding to the timber frame.
Wall ties and their fixings should be:
- compliant with BS EN 845-1
- in accordance with the design
- capable of accommodating the anticipated differential movement
- of the type specified in the design
- of austenitic stainless steel
- fixed to the studs and not the sheathing using the fixings supplied by the wall tie manufacturer
- kept clean and free from mortar droppings
- spaced at a maximum of 600mm horizontally and 450mm vertically
- spaced at jambs of openings and at movement joints at a maximum of 300mm vertically and within 225mm of the masonry reveal or movement joint; additional studs may be needed
- spaced within 225mm of the top of the wall, including at gables
- inclined away from the sheathing so that the slope is maintained following differential movement.
Last updated: 2nd January 2024