jas_ste

Hello I volunteer for a scout troop. The building they use leaks via the joins on the huge concrete gutters (see image attached). I've seen the 'Finlock' gutter problem and solutions but the scout hut is a huge building so I'm unsure if it's similar enough. A number of roofers/builders have tried to fix the problem, looks like via sealants etc., but failed. Has anybody come across anything similar and have they found a 'solution'?