Problem is they used regular instead of expansion dropper outlets to the downpipes so there are no expansion joints on any of the four independent sections installed.
One length of spouting is more than 8 m, another is over 3, about 3.5m , another maybe ok at 2ish and the other section is again over 3, probably 3.5m.
Am I right that this is an incorrect install?
If so, what is the best way for them to fix it? Remove and replace with expansion droppers or would installing an expansion joint somewhere in the middle work?
Thanks for any advice.