We present a comparison of materials for adhering layers of holographically formed polymer dispersed liquid crystal (H-PDLC) films layered in stacks fabricated on common substrates. The results of this study are used in applications that rely on maximization of transmitted light through the layers of H-PDLC. Data is presented by comparing a simulated transmission envelope modeled on the individual H-PDLC cells with the actual stacked transmission spectrum. Additionally, data is presented on the quality of the wavefront of H-PDLC transmission spectrum individually and layered using air and index matching layers.