a short length of guttering about half a metre long was attached, by a corner piece, to the main length running alongside one side of the roof .It was there to direct rainwater onto the sloping tiled roof, in fact i had one at both ends of the guttering and now there is only one after the strong winds we recently had .As the corner piece was broken I bought a new one and attached that to the corresponding lengths of guttering .Unfortunately two days later the short length came down again after another gale so i am wondering if there is an adhesive I can use that will create a stronger bond. The original corner piece did have some white adhesive but I have no idea what that was .Most of the available adhesives appear to be fillers designed to repair leaks so i am not sure they would be suitable.Any suggestions? Thanks