If you already know there is dry rot on the house, I would not leave it sitting until spring just because winter is coming. I also would not tell somebody who finds the same damage in June to wait until fall because that is supposedly the “right” season for repair. The season is not really the decision. I want to know whether water is still getting into the house, what caused it, and how far the damage has traveled.
I’m Mark Kovalevich, co-owner of GotRot, and this is where I think homeowners sometimes focus on the wrong thing. The soft board or damaged piece of trim you can see matters, but it may only be the outside part of the problem. Water can travel behind siding, around windows, or through a failed flashing detail and reach sheathing or framing before the exterior looks especially bad.
Western Washington makes that more important because most of our rain comes through the colder part of the year. If you already have an active leak in September or October, leaving the same opening exposed through another wet season does not improve anything. I am not saying every month of waiting automatically turns a small repair into a huge one, but I would not leave an active moisture problem unresolved because the calendar says winter is close.
A common example is damaged trim around a window. A homeowner sees one soft board and assumes replacing that board will solve the problem. Sometimes the damage really is limited to that area, but you cannot know that from the surface alone. Water may have moved behind the trim and reached the wall assembly. The framing may still be completely solid, or the moisture may have traveled farther than expected. The repair depends on which situation we actually have. That is why I do not like surface-only fixes when nobody has figured out where the water came from. New trim over an active leak gives you a cleaner-looking exterior, but it does not give you a repaired wall.
If the area keeps getting wet, you see recurring staining, or the wood is soft enough that you can easily push into it, that is enough reason to have it evaluated. You do not need to start pulling siding off yourself. The first goal is to understand whether the damage stops at the material you can see or continues behind it.
We had a project in Woodinville where the homeowner, Michelle, first noticed an active leak near the chimney and soft siding around that area. From the outside, it looked like a siding and trim problem. Once the wall was opened, we found about 12 soaked siding boards, rotted sheathing, and several damaged framing members. The water had been getting behind the exterior because the chimney area did not have adequate flashing. That changes the repair completely. Replacing the soft siding alone would have hidden the problem while leaving wet, damaged material behind it.
We completed the project in February 2026, so this was also a good example of why I do not automatically push exterior rot repairs into spring. We removed the damaged material, rebuilt the affected framing, corrected the flashing, and then closed the exterior back up.
The important part was not that the work happened in February. The important part was that an active leak had already reached the structure, and there was no good reason to let it continue for several more months.
We offer free estimates for eligible repair projects, but homeowners should understand what a free estimate can and cannot tell us. If the damage is visible and accessible, we can often learn a lot without opening the house. We can look at the siding, trim, staining, and the area where the moisture appears to be entering. Sometimes that gives us enough information to define the repair. Other times, the visible condition does not tell us what is happening behind the wall.
If we need to start cutting into siding, trim, or another part of the exterior to inspect concealed conditions, GotRot currently charges $950 for that invasive inspection. That is not the same service as looking at the exterior and preparing an estimate.
I think that distinction is important because neither direction should be guessed. A small rotten spot outside does not automatically mean the framing behind it is destroyed, but it also does not prove that the framing is fine. Sometimes the only responsible way to answer the question is to open the affected area and look.
For planning purposes, GotRot currently uses about $3,500 as a baseline for many dry rot repair projects, but I would not treat that as a minimum price or a quote for every house.
A limited exterior repair is one kind of project. If the moisture has reached the sheathing or framing, or if we have to correct the leak source before rebuilding the damaged area, the scope becomes different. That is why I do not like giving somebody a dry rot price based only on a picture of one bad board. The board may be the whole repair, or it may be the first thing we remove before we discover the real problem.
The same logic applies to epoxy. There are localized, non-structural situations where epoxy can have a place after the moisture source is corrected and the remaining wood is dry, but we do not normally treat epoxy as the permanent answer for rotted exterior wood that needs replacement.
If the wood is deteriorated enough to come out, I would rather replace it. If there is an active leak, epoxy does not fix that either. I do not want to make the outside look better while leaving wet material inside the wall.
People sometimes assume that finding rot in November or December means the repair has to wait until spring. I would not make that assumption. Weather affects scheduling and how we protect the house while exterior work is open, but winter does not automatically make dry rot unrepairable. We completed the Woodinville project in February, and we handle exterior repairs through the wet season when the conditions and scope allow it.
The more important question is whether the house is still taking on water. If the leak is active, every additional storm gives that moisture another opportunity to move through the wall. Waiting simply because it is winter does not help the wood dry, and it does not correct the flashing, trim, roof-to-wall connection, or other detail that is letting the water in. This is also why I do not like using caulk as the answer to every rot problem. Caulk can be useful when a small exterior joint actually needs to be sealed, but it does not rebuild damaged wood and it does not tell us what is happening behind the siding. If the underlying detail is wrong, putting another bead of caulk over the surface may only hide the problem for a while.
Roof and gutter problems can create the same situation. A failed flashing detail, roof leak, or water that is not being directed away from the wall can keep the exterior wet long enough for decay to continue. The repair has to address the source, not only the material that shows the damage.
Serious fungal decay generally requires wood moisture content above the fiber-saturation point, which averages around 30%. Once wood is kept dry enough, it does not provide the same conditions for decay to continue. That is why I think about moisture first.
If a damaged board has been wet because of a flashing failure, the repair is not finished until that flashing problem is corrected. If water has reached the framing, the framing has to be evaluated too. Replacing what looks bad without stopping the water only resets the clock.
Western Washington will always be wet for a large part of the year. We cannot change the climate, and the goal is not to keep every exterior surface perfectly dry every minute. The house simply has to be detailed so water stays where it belongs and wet materials can dry when they get wet.
If you already know there is dry rot, I would deal with it when you find it rather than trying to pick the perfect season. If winter is approaching, that usually gives me one more reason not to leave an active leak exposed.
Homeowners who want to see how GotRot handles dry rot, siding, and exterior water-damage repairs throughout the Greater Seattle area can visit GotRot.
The Stone Magazine (TSM): Mark, if somebody finds dry rot in October, should they try to get it repaired before winter?
Mark Kovalevich (MK): If there is an active moisture problem, yes, I would rather deal with it than leave it through the wettest part of the year. But I would say the same thing if they found it in June. I do not schedule dry rot around a season. I schedule it around whether the house is still getting wet.
TSM: Does every visible rotten board mean there is framing damage behind it?
MK: No. That is important. Sometimes it really is one board. Sometimes you open it and find sheathing or framing damage. I do not want to scare somebody into thinking every small spot is a huge structural repair, but I also do not want to tell them everything behind it is fine when I cannot see it.
TSM: When do you know the wall needs to be opened?
MK: If the visible damage does not give us enough information and I have a reason to think moisture went farther inside. That could be recurring staining, soft material, an active leak, or the location of the damage. At that point, opening the area may be the only way to know what we actually have.
TSM: Why does GotRot charge $950 for that type of inspection if estimates are free?
MK: Because they are two different things. A free estimate is us evaluating what is accessible and visible. If I have to start cutting into your house to investigate concealed damage, that becomes actual work. We are opening the assembly so we can tell you what is happening behind it.
TSM: You completed the Woodinville project in February. Is winter exterior work common for you?
MK: We work in winter. You have to plan around the weather, obviously, and protect the house while it is open, but I would not leave an active leak until April just because it is February.
TSM: What made that Woodinville project more serious than it first looked?
MK: The water had already gone past the siding. We found soaked siding boards, damaged sheathing, and framing damage around the chimney area. The flashing was the reason the water was getting in, so replacing siding without correcting that would not have solved anything.
TSM: Can epoxy be a permanent dry rot repair?
MK: Not the way we normally handle deteriorated exterior wood. If you have a very localized, non-structural repair, everything is dry, and the leak is already fixed, there are situations where epoxy can be useful. If the wood really needs replacement or the moisture source is still active, I would rather replace the material and fix the water problem.
TSM: Does caulk stop dry rot from spreading?
MK: Caulk can seal the right gap. It cannot repair rotten framing, and it cannot fix a flashing detail that was built wrong. I would not use it as a substitute for figuring out why the wood got wet.
TSM: What is the biggest mistake homeowners make with exterior rot?
MK: Fixing only what they can see. The visible board may be the whole problem, but you need to know that before you close everything back up.
TSM: If someone finds soft exterior wood today, what should they do first?
MK: Have the area looked at and find out where the moisture is coming from. Do not start tearing the wall apart yourself, but do not assume it will be better in spring either.
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