Increased rainfall is putting increased pressure on traditional guttering systems so we would recommend investing in a deeper PVC guttering system. These systems can handle a higher volume of water than a conventional half round, helping to keep more rainwater away from your home. The choice of square or round is entirely a personal one and will probably depend on the style of your home. The Ogee system includes decorative detailing and is ideally suited to low level roofs, such as single-story extensions or conservatories, where they can be seen and appreciated.