| 摘要 |
<p>An upright section has top and bottom horizontal edge strips monolithically joined to it. It is used in a screening profile unit mode of composite foil sheeting comprising galvanised sheet steel with durably applied plastics foil, used as roof verge and wall sealing unit. The foil thickness is of 0.8 mm and the sheet steel layer (30) is at least 1.0 mm thick, and pref. 1.5 mm. The edge strips may be perforated, the top one having a row of holes or slots for rails (36), and another row of holes for screws (34). At slight extra cost, this provides greatly increased strength, stability and durability.</p> |
