Lloyd George Aylestock, 50, a vice president and director of the S. J. Bell Construction Co. Inc. of Alexandria, who was active in church work, died Saturday in a Chattanooga, Tenn., motel following a heart attack. He was in Chattanooga to attend graduation exercises of a son.

Mr. Aylestock was born in Gould. W. Va. He came to this area in 1951 and graduated from Benjamin Franklin University.

He joined Bell in 1952 and had been a vice president since 1956. He had been a member of the board of directors for the past 10 years.

Mr. Aylestock joined the Bethlehem Baptist Church in Fairfax in the mid 1960s and served as treasurer and deacon of that church before joining the Fairfax Baptist Temple in 1975, where he had served as a deacon and an adult Sunday School worker.

He is survived by his wife, Wilma, and a daughter, Constance, of the home in Fairfax; three sons, Richard L., of Greenville, S.C.; W. Michael, of St. Thomas, Ontario, Canada, and Samuel L., of Chattanooga; his mother, Nola Aylestock, and a brother, Woodford, both of Buckhannon, W. Va.; seven other brothers, Carl, Hartsel, Edwin, and Russell, all of Clarksburg, W. Va.; Glenn, of Purcellville, Va., and Harold and Thomas, both of Sterling, Va.: six sisters, Mabel Newcomb, of Fairmont, W. Va.; Lavaund Bourne, of Herndon; Willard Tomblyn, of Falls Church; Natalie Lawson, of McLean; Anna Mae Young, of Livonia, Mich., and Phyllis Ervin, of Picayune, Miss., and three grandchildren.