The influence of the type of silane coupling agent and lamination temperature on the peeling strength between EVA encapsulation film and glass was investigated. It was found that double bond containing silane coupling agent can effectively improve the peeling strength. However, the peeling strength is still not satisfactory at relatively high curing temperature. Glasses treated with different type of silane coupling agents were adhered with EVA encapsulation films that do not contain silane coupling agents for photovoltaic modules. The peeling strength was found to be determined by the type of silane coupling agent used as the primer of glass. KH570 and Z-6032, which contains methacrylate and vinyl groups, respectively, are the most effective silane coupling agents for the improvement of peeling strength. It was found that the peeling strength between the non-primed glasses and silane coupling agent containing EVA encapsulation films is relatively lower than primed glass and EVA films without silane coupling agent. Several primer formulations, especially hydrophobic silane KH570, were found in damp-heat test to be able to remarkably improve the EVA peeling strength in damp-heat conditions.