The facia board extends around the building just below the roof line.
The purpose of a fascia drip edge on a roof is to direct water away from the fascia board and prevent water damage to the roof and the underlying structure.
The wood at the edge of the roof is called the Fascia Board.
To install fascia properly on a house, first measure and cut the fascia board to fit the length of the roof edge. Next, attach the fascia board to the rafter tails using galvanized nails or screws. Make sure the fascia is level and securely fastened. Finally, seal the joints and edges with caulk to prevent water damage.
To install a fascia board properly, first measure and cut the board to fit the length of the roof edge. Next, attach the board to the rafter ends using galvanized nails or screws. Make sure the board is level and securely fastened. Finally, seal the edges and joints with caulk to prevent water damage.
I am going to guess that you are talking about the fascia board which is usually a 2x6 board
When installing fascia wood board on a house, it is important to follow these best practices: Ensure the fascia board is properly sized and cut to fit the dimensions of the house. Use corrosion-resistant nails or screws to secure the fascia board to the rafters or trusses. Install a drip edge underneath the fascia board to prevent water damage. Paint or seal the fascia board to protect it from the elements. Regularly inspect and maintain the fascia board to prevent rot or decay.
Gutters can be installed without fascia by using a hidden hanger system that attaches directly to the roof decking or by using a roof strap that is secured to the roof. This method allows the gutters to be installed without the need for fascia boards.
To install aluminum fascia, first measure and cut the fascia to fit the length of your roof. Secure the fascia to the roof using screws or nails, making sure it is level and aligned properly. Seal the seams and edges with caulk to prevent water damage. Finally, paint or finish the fascia as desired for a polished look.
The purpose of the gap between the drip edge and fascia on a roof is to allow for proper drainage of water that runs off the roof, preventing water from seeping into the underlying structure and causing damage.
I've run into this on quite a few older architectural gems with spaced roof boards and cedar shakes as the original roof. The crown molding runs at a 45 degree angle from the fascia to the underside of the leading edge of the first roof board. The first roof board is cantilevered just enough to provide a nailer for the top of the crown molding. The trim serves no purpose other than it's ornamental effect and support for the outer edge of the cantilevered first roof board.
Fascia
Wood, or UPVC.