Rooten Fascia Board: How Wood Rot Can Destroy Your Home

loose fascia board

The most common type of fascia board damage is wood rot. This article directly describes fascia board rot caused by water and how to prevent more fascia board damage from happening.

Gutter systems are designed so that the water goes into the gutters and not behind them. Anytime you have water going behind your gutters, that water is destroying your fascia board and going inside your walls. Once your fascia board gets rotted to the point that it is soft, the fascia can no longer support the weight of the gutters. What eventually happens is the gutter will fall off of the home.

What is a Fascia Board?

house fascia board

House Fascia Boards (pronounced “face-sha”) are the white trim boards installed to the roofing eave of your home where your home’s gutters are mounted.

Their main purpose is to cover and protect the exposed rafters and prevent water from going inside your walls. By doing this it gives the home a finished look and also prevents entrance from insects, birds, squirrels, etc…

What size fascia board do I need?

Fascia comes in a variety of sizes like 1×6″, 1×8″, and 1×10″. To determine what size is needed for your home you will need to measure your existing fascia boards.

Are house fascia boards always wood?

There are only a couple of choices of materials that Fascia is available in. Wood is the most common material because it is cheapest and easiest to work with. Always remember that all wood will rot from water exposure. Therefore you will need to paint the fascia with waterproof-based paint and sealant.

There are other options for fascia such as composite fascia which is made up of wood chips, sawdust, and epoxy resin. Or you could even get your existing wood fascia wrapped with aluminum or vinyl to act as a shield and protect the wood.

Signs of a Rotten Fascia Board

1. Gutter Lean

Once Fascia board gets soft it can no longer support the weight of the gutter. Eventually the gutter will fall off of the wall. In the example photo above, you can see the gutter hardware (hidden hangers) are no longer biting into the fascia board. You can also see that the fascia board behind the gutter is discolored and rotting.

The gutters in the pictures above are in the beginning stages of falling of of the home. If it does fall you will likely need to replace the gutter and the fascia board.

2. Gutter Falling Off House

rotten fascia board with gutters falling

Anytime you see gutters hanging off of the house, chances are that the fascia board is damaged. In the picture above you see a gutter that is half on the house, and the other half is hanging to the ground. From the picture it appears they attempted to attach new fascia board to old fascia board, and the old fascia is completely rotten.

rotten fascia board
In this photo you can see that everything is falling apart and rotting away. Those cable wires are holding the gutter up on this side.

3. Gutters Keep Coming Loose

If you had a gutter re-secured because it was hanging loose, but then a few weeks later it came loose again… That fascia board is likely too soft and needs to be replaced. As a gutter company that does a lot of repairs, we see this all the time.

In the two above photos (ignore the Christmas lights) you see a gutter with a lot of holes in the back of it. What has happened here is they have re-secured this gutter multiple times and it is still coming loose. The extra holes are a dead giveaway of this as also the mixture of multiple styles of hangers. (gutter spikes, hidden hangers, self-tapping screws, etc…) The reason for this is the fascia board damage is too much and the board can no longer support the weight of the gutter. You could put a gutter spike every 2 inches, but those spikes will all pull loose soon enough.

In both of these pictures you may also notice that there is no DRIP EDGE present on the roofing eave. Drip Edge is a very essential component of the gutter system and roofing eave of your home. Its purpose is to make sure no water goes under the shingles or behind the gutter. However, when there is no drip edge the water just destroys everything.

4. Visible Deterioration/Discoloration of Fascia

Over time the paint on fascia boards will flake off. The paint was the protection layer so once this happens the wood is vulnerable to water damage. The white boards are the easiest to spot discoloration on.

By taking a lap around your home every 6 months to a year you can keep an eye on your fascia boards. Since the gutters are mounted to the boards, you may only get to see the bottom or the top of the wood. Look for any signs of rot on the exposed sections of wood you can see. One general rule of thumb is to poke the wood fascia board with a screwdriver. If it’s solid it is still good. However if your screwdriver goes into the wood itself, then that wood is getting soft.

Anything from cracks, splits in the wood, paint peeling, moss, mold, wet spots, and termites is all considered fascia board damage. Since the gutter is mounted to the board and it is higher up, you may need to use a ladder to get an up close view.

What Happens When a House Fascia Board Rots?

As we’ve discussed above, once the fascia board starts to rot then everything else that is attached to it is also at risk of falling. Sometimes fascia board holds up the soffit or gutters that is installed under overhanging roofs (like in the photos below).

When you have a rotten fascia board the gutter is usually the first thing that comes loose. If you do see the soffit starting to fall out in one section, you should have them check the fascia when re-installing the soffit.

Can you re-paint a fascia board?

The short answer is “yes”. Repainting your house fascia can be an effective rotten fascia board repair strategy if you catch them early enough before any significant damage has occurred. The fascia has to still be hard and solid for it to work.

Here’s how to repaint your fascia board:

  1. Completely remove all gutter and hardware attached to the fascia.
  2. Scrape away all loose paint.
  3. Paint the fascia boards using a waterproof paint (pre-primed preferably)
  4. Wait for the paint to dry
  5. Reinstall the gutter system.

Fascia Board rot is an irreversible process. Once water has wore away and penetrated the water proof seal the wood is now vulnerable. Re-painting your fascia every few years will increase the life span of your fascia and may be a good solution for fascia board repair.

How much does fascia replacement cost?

The cost to remove and reinstall the gutters plus having a professional painter paint your fascia is going to be almost as expensive as replacing the fascia wood itself.

If you are not handy with tools or don’t have any friends to help you, then re-painting your fascia isn’t always the best option. And that’s because you’ll be paying almost as much (about 75% of the cost) to repair it as you would pay to replace it with all-new wood.

How to replace a house fascia board

When rotted fascia board repair is impossible, you might have to replace all the boards.

Replacing damaged fascia boards can be a time-consuming project. The problem is that you need to remove all gutter and hardware that is mounted to that section of fascia board.

We do not recommend attempting this unless you know what you are doing. Keep in mind that these directions are very basic and require some knowledge of measuring/cutting wood.

Here is a brief step-by-step guide describing how to replace rotten fascia board:

  1. Determine what area of Fascia Board is damaged and needs to be replaced
  2. Measure your existing fascia board to determine what size is needed. (1×6″, 1×8″, 1×10″, etc…)
  3. Prep your fascia by painting with a waterproof paint
  4. Remove all gutters and brackets from the existing fascia while the paint dries
  5. Unscrew all hardware from the face of the fascia board and remove any nails
  6. Remove the fascia board from the wall
  7. Remove any debris, caulk, paint, etc… from the rafters that prevent the fascia from being flush to the boards
  8. Start with one end and install your first section of fascia by screwing into the rafters(make sure it’s square and straight)
  9. Install the fascia all the way across. Be sure to mount to every rafter.
  10. Try to use all the factory edges and only have to cut your last board. Make sure the last board goes across at least 3-4 rafters to have a proper connection.
  11. Once your fascia is properly installed you can re-install the gutter system. Be sure to pitch the gutters in the correct direction towards the downspouts
Drip Edge is installed under the shingles and over the back of the gutter. It prevents the water from going behind the gutters.


Fascia board is considered a very essential part of your gutter system and roofing eave. To get the most life out of these boards as possible you’ll need to keep an eye on them and act fast if you see signs of damage. Always remember that there is no repair for rotting wood. It will need to be replaced.

And most importantly, keeping your gutters regularly cleaned and maintained is the best thing you can do for your home. Gutter negligence is the #1 cause of all problems with your gutter system. If debris is piled up in your gutter than water could be going behind the gutter and damaging the wood.

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Frederick, MD 21701

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5 Responses

  1. Thanks for the reminder of keeping my fascia bored well maintained as wood rot damage cannot be repaired and would have to be replaced. I’ve been looking this up since I’ve been noticing some symptoms around my gutter system. If the damage worsens, I hope I can find a restoration service that would be able to work around my budget.

  2. I had some gutter damage. The run was replaced, but the Fascia board is wavy. They said it just needed caulking. Is that correct?

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