This study focuses on the experimental investigation of the shear strength of double-sided strap adhesive joints subjected to static loading. A series of specimens were prepared and experimental tests were conducted to evaluate the influence of overlap length and adhesive type on joint performance. Specimens were fabricated by hand lay-up of glass fabric impregnated with epoxy resin and cold curing using vacuum bagging technique. The configuration of the specimens was selected to provide the maximum potential shear strength due to the equal axial stiffness of the joined parts and the overlay straps. The results of tensile tests indicate that two-times increasing in overlap length leads to a 38% decreasing in shear strength of adhesive joint, which can be explained by the non-uniform stress distribution over the longer adhesive layer, which in turn promotes premature failure initiation at stress concentration zones. In contrast to single-adhesive joints, bi-adhesive specimens showed significantly worse properties in terms of shear strength and were approximately 43% lower than those of single-adhesive joints with the same overlap length. This finding highlights a critical technological limitation of bi-adhesive configurations considering the difficulties in achieving proper compatibility of curing processes for different adhesives.