What are fascias?
Fascias run horizontally along the roofline, and their function is to cover the relevant fittings to ensure they remain watertight and protected. The fascia also assists in securing the last row of roof tiles.
What are soffits?
Soffits can be found on the underside of the fascia boards.
Soffits act as the skin that covers your eaves, without it you would see the rafter beams fully exposed. If your rafters are exposed in any areas, you will be likely to have mould building up in areas of your home, and beams that have been rotting and require replacement.
Soffits also helps your building breathe and allow air to flow through the attic.