If you have dry rot, you need to get rid of it. Here are the 6 steps that you will need to take to fix it:
1. Remove the dry rot.
2. You will then spray with a fungicide.
3. Next, you will apply a wood hardener.
4. Replacing the damaged parts with epoxy.
5. Sand down the surfaces.
6. Use an exterior acrylic primer with paint for protection.
These are the steps that you will follow in order to fix the problem that you have with dry rot.
Once you are done with that, it should not be a problem for you anymore. You can call a professional as well
Call 503-877-1198