What wall ties do I use with CavityTherm?
Type 4 wall ties conforming to BS 1243:1978 – should be used and placed at approx 600mm centres, do not place directly on the DPC. The type and spacing of wall ties is dependant on geographical area, cavity width, wall length and height, and opening sizes. They should be placed at centres recommended by manufacturers to suit the wall specification and placed within the pre-formed notches of the CavityTherm. Slots should be cut into the upper tongue of the boards to allow the ties to run down towards the outer leaf.
