Boiling house and Pigsty at Tre-Ddafydd-uchaf

Single-storey boiling house to W with pigsty to E, separated by a high-walled yard. Rubble walls with contrasting limestone dressings; gabled roofs with modern slate covering. Boiling house: Brick chimney to S gable. Central gable end doorway with cambered brick heads with dripcourse; rectangular, small-paned overlight. Tall vent slit above. Set along the base of either long wall are blocked feeding chutes, with slate lintels. The pigsty door is similarly detailed (although without a fanlight, and offset to the left), with the vent above shorter and offset to the right (W). The W wall of the pigsty (facing the yard) has been re-built in breeze block.

Both buildings are of 2-bays, with modern collared trusses. There is a low stone plinth along the rear (S) gable wall of the pigsty.