What size and type of rivets do I need to attach a 90mm plastic downpipe pop to a Colourbond gutter?
I'm planning on adding an extra downpipe to a standard domestic gutter, but I only want to do it once rather than have to come back and fix it later, so advice on the correct size and type of pop rivet would be appreciated.
Welcome to the Bunnings Workshop community. It's marvellous to have you join us, and thank you for sharing your question about attaching a plastic gutter pop to your Colorbond gutter.
In this particular scenario, I suggest using an Abey Australia 75mm Round Standard Downpipe Pops. Using plastic on a metal galvanized surface is not recommended as the plastic will tend to warp in the intense heat of the sun causing it to form leaks. If you're using a 90mm PVC downpipe the 75mm galvanized metal pop is the correct one to use. It provides an air gap between the pipe and the pop preventing an air-lock from forming and causing your gutter to overflow.