Fiber-reinforced Polymers (FRP) composites have emerged as a viable solution to combat corrosion in reinforced concrete structures, drawing significant attention. The bond behaviour between FRP reinforcement and concrete significantly affects load-bearing capacity and serviceability of structural elements under flexural loading. Inconsistent experimental conditions and non-consideration of critical parameters in previous studies hinder accurate assessments. This research investigates the flexural bond performance of Glass FRP (GFRP)-reinforced concrete members, focusing on variables such as the previously un-explored bar surface characteristics, concrete grade, confinement, and embedment length. Twenty-four hinged type-beam specimens simulating practical field conditions, have been tested to investigate various combinations of the investigated test parameters. Influence of the test parameters on the failure modes and the post-peak behavior of the tested specimens under flexural loading also form part of the present study. The findings provide insights into bond behavior, which is essential for designing FRP-reinforced concrete structures. This research highlights the importance of revising design codes to include surface geometry properties and other previously non-considered factors, by enhancing the understanding of GFRP-concrete bond behavior.