Abstract: A method and apparatus for producing solid profiles from a strip of fiber preimpregnated with resin. The method includes the steps of: providing a planar strip of fiber preimpregnated with resin which has a longitudinal direction and a transverse direction; corrugating the planar strip to form a corrugated strip with a plurality of zigzag folds parallel to the longitudinal direction; and compacting the corrugated strip in the transverse direction in order to place in contact and to join, one to the other, surfaces of the plurality of folds in order to form a solid profile. The apparatus includes: a corrugating unit with a pair of corrugating rollers provided with matching circular striations suitable for corrugating the planar strip; and a compacting unit that includes at least one pair of facing, lateral rollers suitable for compacting the corrugated strip laterally until the solid profile is obtained.