This eaves felt support tray is used to prevent wind driven rain from causing damage at the eaves.Made from PVC, it has a 150mm rear projection (up the roof) and a 50mm drip down into the gutter. Eaves guard is nailed to the top of the fascia board (timber or PVC fascia) at 300mm centres. Each length is 1.5m long and you should allow a 150mm overlap between lengths, with a nail fixed through the overlap.Once installed, the bottom section of roofing membrane can be laid on top of the eaves guard and ideally taped in place.For an installation guide, watch this video below.