If it’s old and/or damaged then you might want to consider updating your roofline. More importantly, though, if it stops performing the task of carrying water away from your house then it can cause real long-term damage to your home if left unattended.
uPVC products do not rot, rust, peel, flake, are practically maintenance free and in most cases come with long-term guarantees. They are available in a number of colours and styles to suit your property and taste.
