Lead apron for roof-penetration surrounds

摘要

In the case of a lead apron, in order to prevent the formation of lead carbonate and thus to prevent the roof covering from taking on a white coloration, barriers (10, 11) are provided on both sides, that is to say the upper side and the underside. Said barriers (10, 11) are considerably thinner than the apron body (2), which consists preferably of lead which has been rolled in a corrugated manner, and preferably comprise coating layers which are applied such that they cover the entire surface and have, in particular, a dark pigmentation. The barriers (10, 11) are, in particular, significantly effective until a surface which is stable to aggressive media has been formed as a result of oxidation. <IMAGE>