Soft Spots in Your RV Roof — What They Mean and What to Do Next
A soft spot in your RV roof or ceiling isn't just a cosmetic issue. It means water got in, and it's been sitting longer than you think. Here's how to find them, what's underneath, and when repair is still possible.
You press your hand against the roof of your RV and it gives. Spongy. Soft. Maybe you noticed it when you stepped on the roof for the first time this spring. Maybe it's a spot in the ceiling inside the coach. Either way, your first instinct is right: something is wrong.
Here's what that soft spot actually is, how long it's probably been there, and what the options look like.
What is a soft spot in an RV roof?
RV roofs are layered: the exterior membrane on top, then a layer of plywood or OSB decking, then insulation and interior ceiling panels. A soft spot means one or more of those layers has absorbed water and is either delaminating, rotting, or compressing.
The soft feeling is usually the decking. Plywood and OSB hold up to a lot, but not to sustained moisture exposure. Once they start to go soft, they go faster — especially through a Minnesota winter where freeze-thaw cycles drive water deeper with every cycle.
How long has it been there?
Longer than you think. By the time you can feel a soft spot with your hand, water has typically been getting in for at least one full season — often two. The entry point is almost never directly above the soft spot; water travels along decking seams and roof framing before it settles and starts doing damage.
This is why we find soft spots two feet away from the actual leak source. Finding the soft spot is step one. Finding where the water is getting in is the real job.
How to find soft spots yourself
- Walk the roof slowly in a grid pattern — go toe-to-heel, feel for any give underfoot
- Press with your palm every few feet — softer spots will flex more than sound areas
- Check near every vent, skylight, A/C unit, and any antenna or satellite mount
- Check roof edges, especially at the front and rear caps where caulk fails first
- From inside, look for ceiling panels that feel soft or show discoloration, waviness, or staining
- Musty or moldy smell after rain — even with no visible water — is a soft-spot indicator
Can soft spots be repaired — or does it mean replacement?
This is the question everyone wants answered, and the honest answer is: it depends on how extensive the damage is.
Repair is typically possible when:
- The soft area is isolated to one or two sections of decking, not the whole roof
- The rafters/framing below the decking are still structurally sound
- The damage hasn't spread to the interior wall structure or ceiling framing
- You caught it before it compounded through another winter
In these cases, we cut out the damaged decking, replace it, rebuild the affected section, and then address the source of the intrusion — seam, vent, or fixture — with commercial-grade materials so it doesn't happen again. This is real structural work, not surface patching.
Replacement is usually necessary when:
- The soft spots are widespread across the roof (multiple areas, including near the center)
- The decking is fully delaminated — comes apart in layers when removed
- Rafters or framing members are rotted, not just soft
- The damage has reached the interior ceiling structure or wall tops
We've rebuilt entire roof decking systems on RVs that owners were about to scrap. It's not cheap — but it's far less than a new RV. And when we replace a roof, we use 45-mil commercial TPO or EPDM that won't have this conversation again in 5 years.
What happens if you ignore it
It gets worse. Soft decking compresses further, starts to crack, and the membrane above begins to separate. Once the membrane separates from the decking, water has unrestricted access. Rafters that were sound start to rot. By the time you smell mold inside, you're looking at a significantly larger repair bill — or a totaled coach.
A soft spot caught early is a repair. A soft spot ignored is a replacement.
The inspection first rule
Don't quote yourself based on how it feels. We've opened soft spots that looked catastrophic and found only one compromised rafter. We've also opened small-feeling spots and found eight feet of rotted decking. You won't know until someone gets in there — and gives you a written assessment based on what they actually find.
Our inspection includes photo documentation and a written report before any work starts. If it's a $700 repair, that's what you'll hear. If it needs more, you'll see exactly why.
Schedule an Inspection 📞 (612) 516-5130