be useful as well the elongate blade 40 may include flaps 46 extending therefrom as illustrated in fig3 the elongate blade may include two flaps 46 extending from each side although it will be appreciated that other quantities may be utilized as well the flaps 46 extend the length of the elongate blade 40 and may be flexible so as to assist in inserting the elongate blade into the wall cladding panel 6 the flaps 46 have a distal edge 50 shown in fig2 and 4 and a width between the distal edge and the planar member 42 the width may be selected to be between 1 32 and u215c inches 0 8 and 9 mm the flaps 46 may have a thickness selected to be between selected to be between 1 64 and 1 16 of an inch 0 4 and 1 5 mm although it will be appreciated that other thicknesses may be useful as well as illustrated in fig3 the flaps 46 may be angularly oriented relative to the planar member 42 by an angle generally indicated at 48 the angle 48 may be selected to be between 10 and 90 degrees although it has been found that an angle of between 30 and 60 degrees has been particularly useful the elongate blades 40 may be formed of any suitable material such as by way of non limiting example steel galvanized steel stainless steel aluminium brass plastic rubber ceramics or composite materials the flaps 46 may be secured to the planar member 4 according.