Former slate enamelling workshop, Rhiw'r Gwreiddyn

Long single-storey range of coursed slate blocks under a corrugated iron roof, with stone stack to N end. Central entrance containing a boarded door with overlight flanked by window openings. Large-pane wooden window to R; that to L has been enlarged and contains a 3-light wooden casement. Towards the R end is an entrance with double metal doors; a single doorway to the far L has been infilled with stone. One small skylight to roof pitch and 2 steel flues. The N gable end has a C20 panelled door to the L, leading into the kilns, and a firebox R of centre, now partially below ground level. The rear (E) wall is built into the bank. Up against the bank are 2 added enamelling kilns in a flat-roofed projection of coursed slate blocks; the roof is in a poor state and covered in grass. There are 2 flues leading to fire-boxes on the W side, of yellow firebrick with arched heads. The rear wall of the main range has a boarded door immediately R of the kiln projection. A stub wall on its R side, and another at the NE angle of the building appear to demarcate an earlier lean-to; within it is an area of yellow and red brick with a flue to a firebox at the base, which has a cast iron door. To its R is a 2-light wooden casement replacing a door. To the far L end of this elevation is a single doorway covered by corrugated iron sheeting, and evidence for a former lean-to structure. Four-pane window, replacing door, offset to L of S gable end.

Four-bay open interior with substantial sawn King-post trusses with diagonal struts; the tie beams are supported in the walls beneath wall-plate level. At the N end, 2 doorways lead through to the slate enamelling kilns (said to contain fire-boxes and hooks). That to the R has double slate doors, that to the L is infilled with breeze blocks. To the centre of this wall, at a higher level is a small opening infilled with brick. Two further doorways with slate double doors, towards the L of the E wall, lead to the external enamelling kilns.