Frost line depth in Roanoke city, VA

How deep the ground freezes in Roanoke city, VA

13 in. Dig to 13 in, just below the frost. Nearest NOAA station: Roanoke Rgnl Ap, 2.8 mi.

Your building department sets the legal frost line depth (IRC Table R301.2(1)); footings must go below it (R403.1.4.1). Call them before you dig.

Code depth · Snow