If you’ve stepped onto your RV roof and felt a section that seems spongy, weak, or slightly sunken, that’s not something to ignore.
Soft spots in an RV roof are almost always a sign of underlying water damage—and the longer they go untreated, the more expensive they can become.
At Elite RV Roof & Collision, we regularly inspect and repair RV roofs with soft spots, and the earlier they’re addressed, the better the outcome.
Let’s break down what they mean and what it typically costs to fix them.
What Causes Soft Spots in an RV Roof?
An RV roof should feel solid and stable. When it doesn’t, it usually means moisture has penetrated beneath the surface.
The most common causes include:
1. Failed Sealant Around Vents & AC Units
Cracked or separated sealant allows water to slowly seep into the roof decking.
2. Worn or Damaged Roof Membrane
Tears, thinning areas, or aging materials can let water pass through over time.
3. Poor Past Repairs
Sometimes previous patchwork or coatings trap moisture underneath, accelerating wood rot.
4. Storm or Hail Damage
Impact damage can compromise the roof system, even if it isn’t immediately obvious.
Once water reaches the wood decking below the surface, it begins to break it down—causing the roof to feel soft or unstable.
What a Soft Spot Really Means
A soft spot doesn’t just mean “a weak area.”
It usually means:
-
Water has been present for a while
-
The decking may be rotting
-
Insulation could be saturated
-
The damage may be spreading
Even if you don’t see interior stains yet, damage can travel before it shows inside your RV.
Ignoring a soft spot often leads to:
-
Larger sections becoming compromised
-
Structural weakening
-
More extensive (and expensive) repairs
