How for can you span a 2x6 for a ceiling?

A 2x6 can typically span up to 10 to 12 feet for a ceiling, depending on factors such as the load it needs to support and the spacing of the joists. For lighter loads and with joists spaced 16 inches apart, a span of up to 12 feet is generally acceptable. However, for heavier loads or wider spacing, it's advisable to consult local building codes or a structural engineer for specific recommendations. Always ensure that the span adheres to safety standards and regulations.