
    433 A.2d 106
    Lisk Plumbing etc. v. Corbett et ux., Appellants.
    Argued November 15, 1979.
    Allen E. Macleod, for appellants; W. Thomas Laffey, Jr., for appellee.
    Before SPAETH, HOFFMAN and VAN der VOORT, JJ.
   Affirmed.

HOFFMAN, J., concurred in the result.  