The optimum level for protection when using a steel masonry support system is at the same level as the support itself, and this is now possible using a Masonry Support Cavitray from Cavity Trays of Yeovil.

Protecting at the support level arrests water where cavity is most restricted and where the angled support brackets connect inwardly to the structure. Where pistol bricks are used the preformed Cavitray has a stepped drop lip that follows the shape of the pistol brick lower edge. Thus protection commences and finishes at the lowest and highest extremes of the structural support arrangement.

Water arrested by the shaped Cavitray is evacuated through the external leaf using preformed Caviweeps. With a choice of five designs and a wide range of colours, the number of discharge outlets can be minimised and the visual presence merged with the external finish.

See page 42 of new 2011 Technical Manual for details.