Since 1982 Dennis Roberts has worked primarily with on-site specific ecclesiastical commissions.  He works closely with the architect and church representatives interpreting the needs of the client.  He uses a creative mix of traditional symbolism and contemporary design elements that harmonize with the architecture in which they exist.

He often combines contrasting media within his designs, not only designing with the color of transmitted light, but also with reflected light and textures.  In the fall of 1982 Dennis organized IHS Studios to begin fabricating his own designs in house, in order to gain greater control of the finished product.  His goal was to create a studio that would execute God given talents in the creation of works that would glorify and honor God.  In the past 38 years he has gathered several Artist and Craftsmen who together under his supervision have completed over 1280 commissions throughout the United States, Mexico, accounting for more than 6800 windows.