Within the Junction complex was a large stone built two road locomotive shed opened in about 1869. It would appear that the shed was approx, 200feet long, and there would appear to be the remains of a large stone built sand drying plant at the north end. Records only show one banking engine being kept at Talyllyn, and this appears to have been kept in a "Lean to" extension to the side of the main building, so it would seem that the shed was used mainly for maintenance, confirmed by the large amount of worn out brake blocks, fire bars, and even a wagon spring found during a most interesting day of investigation by members. However the 1911 census does not show any residence as being employed as fitters. The engine shed closed early in 1922 and rapidly fell into disrepair.