u shaped center section 322 this top cap flashing section 320 is provided with apertures a 9 and a 10 each of which are defined by edge portions preferably as illustrated in fig3 with respect to apertures a 1 wing portions 334 and 336 are similar to portion 234 and 236 previously described otherwise the parts are structurally and functionally the same as previously identified with respect to the discussion of fig7 and 8 and thus the parts are identified accordingly in the various sub flashing and top cap flashing designs apertures are provided for passage of air therethrough it is also a desirable function of such apertures whether a 1 a 2 a 3 a 4 a 4 a 6 a 7 or a 8 to resist the passage of water therethrough consequently note that an exemplary design applicable to any of the just mentioned apertures is set forth in fig3 rather than the provision of a mere punched hole in one embodiment it has been found desirable to provide the apertures in an outwardly directed u201c volcano u201d or u201c cheese grater u201d shape wherein water that is wind blown from the outside does not funnel toward passage through the aperture in contrast water would have to hit the aperture opening itself since sloping sidewalls 400 provide for a narrow throat 402 that ends at the interior periphery circumference 404 as shown in.