T18 trapezoidal steel sheet as a soffit: what to check at the eaves
T18 trapezoidal sheet may work under the eaves, but it is not an automatic replacement for a complete soffit system. Before choosing it, check the geometry, thickness and manufacturer's guidance for the specific product, as well as compatibility with trims and strips. Planning the support frame, edges and ventilation is also essential, since a full sheet does not function as a ventilation panel. The decision depends on the eaves width and layer arrangement, not just the profile name.



