Basement bulkheads, also known as cellar doors or ... with material prices ranging from $900 to $1,600. Both steel and fiberglass doors can fall at the high end of the price range, but steel ...

Bulkhead doors are not airtight. In the summer, warm moist outside air comes in and condenses in the cooler stairwell or basement. As the outdoor metal surface gets hot, the cooler stairwell ...