The East Anglian countryside Cathy Constable grew up in has inspired her work, especially the light, muted colours and textures of the marshes, estuaries and landscape. She uses fused glass as a vehicle to express the ethereal qualities and feeling of the salt marshes, water channels and mudflats that surround her.
She enjoys working with the unpredictability of the physical properties of glass. She use of opaque and iridescent glass, enamels, glass powders and frit add to the complexity of the pieces. When speaking of her practice she expresses that "working with glass and heat is like trying to control the uncontrollable by careful choice of colours, composition and heat work. The nature of refraction in glass also adds to depth and texture."