RV Dry Rot Repair in Washington
Dry rot quietly destroys the wood structure of an RV from the inside, and by the time it’s visible the damage is usually extensive. Poulsbo RV finds the rot, traces the moisture feeding it, and rebuilds the affected framing, floors, and walls in travel trailers, fifth wheels, and motorhomes across Washington.
Signs of Dry Rot in an RV
Rot is structural, so the signs are about softness and movement:
• Soft, spongy, or crumbling wood in the floor or walls
• Walls or floors that flex underfoot or under pressure
• Window and door frames that have shifted or won’t seal
• A persistent musty smell from the structure
• Sidewalls that look wavy or have started to delaminate
• Visible darkened or crumbling wood at seams and corners
Why RVs Develop Dry Rot
Despite the name, dry rot is caused by moisture: a slow, chronic leak that keeps wood damp enough for fungus to break it down. In the consistently wet Pacific Northwest, the usual sources are failed roof sealant, leaking windows and doors, worn slide seals, and aging exterior caulk. Because RV walls and floors are layered, water wicks through the framing and rots it from within while the surfaces still look fine. The rot spreads as long as the moisture source remains, which is why fixing the leak is as important as replacing the wood.
Our Dry Rot Repair Services
• Full structural inspection and moisture mapping
• Identification and repair of the moisture source
• Rotted floor and subfloor replacement
• Wall framing and stud replacement
• Corner, window frame, and door frame rebuilding
• Delamination repair where rot has spread
• Resealing to prevent recurrence
Our Dry Rot Repair Process
1. We inspect and probe the structure to map the full extent of the rot
2. We trace the moisture source that’s feeding the rot
3. We provide a written estimate covering the rebuild and the source repair
4. We remove all compromised wood back to sound material
5. We rebuild the framing, floor, and panels and reseal the source
6. We confirm the structure is sound and the source is sealed
Why Dry Rot Can't Be Left Alone
Dry rot doesn’t stop on its own; as long as moisture keeps reaching the wood, it keeps spreading and weakening the structure. What starts as a soft corner can travel into the floor and walls and eventually compromise the integrity of the RV. Catching it while it’s localized means replacing a section; letting it run means rebuilding large portions of the structure. The moisture source must be fixed too, or the rot simply returns.
How to Prevent Dry Rot
• Inspect and reseal all exterior seams and seals every year
• Address any leak or musty smell immediately
• Keep slide and window seals in good condition
• Control humidity inside during storage with a dehumidifier
• Store the RV under cover when possible
• Probe any soft spot early before it spreads
Frequently Asked Questions
What's the difference between dry rot and water damage?
They overlap. Water damage is the moisture; dry rot is the fungal decay that moisture causes in the wood. We address both by drying and rebuilding the structure and sealing the source.
Can dry rot be stopped without replacing the wood?
No. Rotted wood has lost its strength and can’t be restored, so it has to be removed and replaced. What we can stop is the spread, by fixing the moisture source.
How far does dry rot usually spread?
Further than it looks. We probe beyond the visible damage to find where the wood is still sound, because rot travels along the framing inside the walls and floor.
Is an RV with dry rot worth repairing?
It depends how far it’s spread. We assess the extent and give you an honest estimate so you can weigh repair against the RV’s value.
Will fixing the rot keep it from coming back?
Only if the moisture source is fixed too. We always repair the leak feeding the rot, not just the wood, so it doesn’t recur.
Ready to Schedule Your Service?
Schedule your appointment at one of our locations.
Everett
12218 Highway 99 S
Everett, WA 98204
1-888-960-9629
Sumner
2006 136th Ave. E.
Sumner, WA 98390
888-960-8691
Mt. Vernon
510 Eleanor Lane
Mt. Vernon, WA 98273
866-706-1274
Kent
23031 Military RD. S.
Kent, WA 98032
1-888-960-0627
RV Collision
Kent
Everett
Mt. Vernon
Why Choose Poulsbo RV?
With convenient service centers, expert service RV technicians, and a knowledgeable support staff, you’re never alone on the road when you’re part of the Poulsbo RV family.
We serve RV owners throughout the Puget Sound region and beyond — including Seattle, Tacoma, Everett, Bellevue, Kent, Olympia, Sumner, and Mount Vernon.
