writing about his exhibitions, the irish times art critic aidan dunne, described de buitléar’s paintings as "built from intricate concentric patterns, [that] are geometric but also suggestive of organic processes. they equate to the world outside: complex and orderly but also contingent and unpredictable. their handmade precision makes them visually fascinating". dunne has also written that "de buitléar’s paintings and sculptures start with a basic geometric motif, the circle. this circular unit reverberates through varieties of echoing, concentric patterns. on the one hand the patterning is absolutely strict, retaining its geometric basis. on the other, the works are made by hand, so that tiny fluctuations of touch, the fallibility of the human hand, is part of the overall character of the works. in fact, it’s essential to their character."