How to Install & Replace Fascia Board

Tools and Materials

There can be several reasons why your board needs to be replaced.

The board is more exposed to water, especially if a gutter is attached to it, as it can lead to rotting and decay at a faster rate if it is made out of wood.
If the material is wood, it is more likely to be damaged by pests and termites, which will weaken the board and cause it to fall. Termites can also spread to other parts of the roof.
Over time, fascia boards can get cut and warped, even if they are made from vinyl or aluminum.

Gear: Safety Goggles, masks, work gloves and hard helmets are a must while doing this.
Stability: Make sure the ladder is placed firmly so you won’t fall while climbing.
Weather: It will be better to do this on a sunny day rather than a windy or rainy one.
Assistance: If you cannot put up the board yourself or it is too heavy for you, ask someone for help while installing.

If you are just replacing a fascia board, you only need to replace the part that is rotten or damaged.
First, if a gutter pipe is attached, remove it using a screwdriver or a prybar. Gently insert the prybar between the gutter and the board and pull it out.
Next, to remove the board, pry it away from the roof and remove the nails between the board and the edge of the roof. The board will come down slowly.
In case there’s partial damage, cut down the piece of the adjacent board that was touching the damaged part because there is a chance that it might be rotten, too.
Check if the rafters are damaged, too. If they are damaged, replace them to give the new board for a solid foundation.

Next, if you are replacing a fascia board, cut the piece to the length you want. But if you are installing a new one, chances are that you will be using the whole length of the board for your roof. The height and length need to be precise, so use measuring tape.
Make sure the piece you have cut is thick enough to touch the rafters at the back. You are going to attach the board to the rafters for strength.
Cut the first board so that it reaches half the width of the rafter so that you can attach the next board to the same rafter, for more stability.

First, use an L-board at both ends of the roof and fix it up with nails to the rafters. This will help to give support while placing the fascia board.
Install the fascia board above the L-board, align it with the rafters and nail the board through the rafters. You can do this manually with nails and a hammer or you can use a nail gun. Repeat this for the whole board.
After you’re done putting up the fascia board, pull out the L-boards and repeat the process along the length of the roof.

Tip

If you are replacing a fascia board section, you may not need the L-board for support.

After you’re done with the installation of the board, follow up with these steps.

Reattach the gutter pipes using screws and tighten them; make sure they are aligned properly.
Check if there are any gaps between the boards.
Protect the board from moisture by applying a water-resistant sealant.
Dispose of the waste properly and clean the debris.
Apply paint on the fascia board to make it look beautiful and wait for it to dry.

After you’re done with your fascia installation, the next step is to maintain it properly.

Keep checking for any signs of damage and decay, especially in the areas near the gutter.
If the board is made of vinyl or aluminum, use detergent or soap to clean it. Make sure to clean out the debris and dirt in the corners with brushes.
If the damage inside the board and rafters is too much, consider calling a professional.