'Peach House' at Plas Llangattwg including attached former boiler-house

Wrought iron-framed glass house on a brick plinth forming a lean-to against a rubble stone wall to the N. The W gable wall is of masonry but with a brick coping. The ironwork has a curved profile. It is supported on iron ribs which run from the top to ground level, following the general profile of the superstructure. It consists of diamond section vertical glazing bars which are closely spaced. Most of the original glass survives intact. The panes lap without horizontal bars. The E gable end of the glass house is also of wrought iron. The glass panes are uniform but with horizontal as well as vertical glazing bars. This end contains a half-glazed wrought iron door with 25 panes. The W masonry wall contains a wood panelled door within a doorcase, which leads into the formal garden.

To the rear of the N wall is the lean-to boiler house, now used as a garden shed, which provided heating for the glass-house. It is of rubble masonry under a slate roof. It has a planked entrance in the E end, and two 2-casement windows with quarries under segmental heads with voussoirs and stone sills. Opposite this entrance, in the boundary wall of Plas Llangattwg is a small blocked opening where the coal was delivered. The dividing wall between greenhouse and boiler house continues to the E with a square headed doorway, providing access between the two.

A row of slender cast iron columns supports the roof. Inside is a cast iron water tank and cast iron slats where the heating originally entered the building via underground pipes. The floor is tiled. (The glass house is still in use for growing peaches and tomatoes.)