Masonry to Masonry Wall Ties act to secure two leaves of a cavity to each other, allowing them to act as one structurally. A cavity tie usually incorporates some mechanism (usually a change of shape) to discourage moisture moving across the tie. Most cavity ties are available with a dedicated clip to secure insulation (usually in sheet form) within the cavity.
Movement Ties allow masonry walls to be tied back to other structures (steelwork or masonry) providing restraint in one direction but allowing movement in the other. This is achieved by placing a debonding sleeve over the part of the tie which is to be embedded in the wall, allowing the tie to move within the sleeve. Also used in movement joints where they occur in long runs of brickwork, the ties spanning over a vertical joint preventing vertical movement but allowing horizontal expansion and contraction.
Lateral Restraint Products allow masonry walls to be restrained back to the other elements of the structure. This could be pre-existing walls, or new / pre-existing steel work. The ties, once in position prevent sideways movement between a wall and another structure.