This study compares the initial rotational stiffness and resistance of exterior beam-to-column connections around the weak-axis of glass fibre reinforced polymer (GFRP) pultruded profiles, via experimental, and analytical methods. The experimental campaign was carried out for short- and long-edge end distances, with and without the use of reinforcing plates for both web- and flange-cleated joints. The results showed that strength and stiffness increased for the longer end distance, and with the addition of reinforcing plates for both web- and flange-cleated specimens. Additionally, double-lap tests, considering short- and long-end distances, were carried out to determine the shear-out and bearing strengths of the GFRP laminates. The analytical estimations of the initial rotational stiffness follow an adaptation of the “component method”, proposed in EN 1993-1-8:2005, accounting for column web bending and punching shear in the column web. The analytical prediction of strength and stiffness are compared with the experimental results, 31% of strength estimations and 37% of stiffness estimation fall within a 20% relative error range.