The external walls were originally weatherslated, a technique in which overlapping slate tiles are fixed vertically across a wall face to shed rain and protect the masonry beneath, much as roof slates do overhead. Only a few of those slates remain now, leaving the stonework exposed and giving the building an incomplete, mid-process quality that makes it feel less like a ruin and more like something caught between states.

The chapel sits on the north side of a rectangular graveyard enclosed by a high stone wall, the building itself oriented east to west in the conventional manner. Along the south elevation, two arched doorways are set beneath four round-headed windows, an arrangement that suggests some care about how light and access were managed from the warmer, more public-facing side of the structure. The north wall, which takes the brunt of Irish weather, is buttressed for additional support. Headstones in the surrounding graveyard run from the eighteenth century through to the twentieth, so the space has been in continuous use across a long and varied stretch of time, accumulating layers of inscription and weathering that reward a slow walk around the perimeter.