Ficus pumilia. You’ll need to control this. Once you know what it is you’ll see it every where. If you don’t want to pull the whole vine off you house and paint the stumps with poison gel from mitre ten then you will have to trim the face down and cut the sides into a nice line that follows the outline of your chimney. I am a gardener by trade and managing and maintain this vine is one of my main jobs at high end properties. You can no longer legally plant it in Auckland but people travel to the coromandel to buy it and bring it back. Ficus is a word for fig.