Short answer: RV roof repair runs $150-$300 for an inspection, $400-$900 for resealing seams and vents, $1,200-$3,500 for soft-spot repair, and $6,000-$14,000 for a full roof replacement. The single best investment most owners can make is an annual roof inspection. $200 once a year prevents the $8,000 problems later. Here is the full breakdown of what each repair involves.
Why RV roofs leak
An RV roof has three failure modes: the membrane itself ages and cracks, the seals around penetrations (vents, A/C, antennas, refrigerator vent, plumbing vents) dry out and crack, and the seams where the membrane meets the sidewall develop gaps. About 80 percent of RV roof leaks start at penetrations, not the membrane itself.
The penetration count matters. A typical Class A roof has 12-18 sealed penetrations. Each one is a potential leak. Each one needs annual inspection.
The 5 repair categories by cost
1. Roof inspection ($150-$300)
A tech walks the roof, photographs every penetration and seam, documents condition with a written report. Done once a year in spring before storms. The report tells you which seals are within service life, which are showing cracks, and which need immediate work.
This is the cheapest preventive money you can spend on an RV. Operators who skip this end up with the expensive surprises.
2. Reseal seams and vents ($400-$900)
The most common scheduled work. Old lap sealant (Dicor 501LSW is the industry standard) is stripped off the offending penetrations, the area is cleaned and prepped, new sealant or Eternabond tape goes down.
How long the reseal lasts: 4-6 years for standard Dicor lap sealant in Front Range climate (UV intensity at altitude shortens it). Eternabond tape can last 10-15 years but costs more upfront.
Total time in shop: 2-4 hours depending on roof size and number of penetrations.
3. Small patch repair ($300-$700)
One spot of damage: a punctured membrane from a low-hanging branch, a torn seam corner, a vent that pulled out. We isolate the damage, patch with EternaBond or Dicor patch material, and reseal the surrounding area.
Patch repairs work for small isolated damage. They do not solve membrane-wide aging.
4. Soft spot repair ($1,200-$3,500)
You found a soft, spongy area on the roof. The membrane held but water got underneath. The plywood decking is rotted.
What happens:
- Cut the membrane in the affected area
- Remove the rotted decking
- Replace with new decking
- Reseal the membrane back over
- Apply new lap sealant around the patch
The cost depends on how big the rotted area is and whether one layer of decking is gone or multiple. A 2-foot square soft spot is $1,200. A 6-foot area affecting cross supports is closer to $3,500.
Catch soft spots early. They grow. A 2 ft soft spot in spring becomes a 5 ft soft spot by fall if it rains a few times.
5. Full roof replacement ($6,000-$14,000)
The big one. The entire membrane is replaced. Three materials in use today:
- EPDM (rubber). Older RVs and budget builds. 10-15 year life. Easiest to find for repair.
- TPO (thermoplastic). Most newer RVs since about 2015. 15-20 year life. Better UV resistance.
- Fiberglass (one-piece). High-end motorhomes. 20+ year life. More expensive to replace because of the one-piece nature.
Full replacement includes: strip old membrane, inspect and replace any rotted decking found, lay new membrane, seal all penetrations, replace lap sealant at every joint. Takes 2-5 days in shop depending on size and what's underneath.
Class A: $9,000-$14,000. Travel trailer or Class C: $6,000-$10,000. Old budget rig: less, but the question becomes whether it's worth it on a depreciating asset.
Material choice matters
If you are getting a full replacement, choose the membrane material based on your usage:
- EPDM: cheapest, easier patching, best if you DIY repairs
- TPO: mid-priced, better UV/heat resistance, harder to patch with home tools
- Fiberglass: highest cost, longest life, premium feel
For most Front Range customers (heavy UV at altitude, lots of summer sun), TPO is the right call.
The Front Range hail problem
Colorado Front Range averages 6-8 hailstorms per summer. Most are pea-sized. Once or twice a year we get golf ball or larger. Hail damage to RV roofs is one of the most common insurance claims we handle.
Insurance typically covers hail damage. Deductibles vary $500-$2,500. We document the damage, write the estimate, work with the carrier on supplemental claims if more damage is found during repair.
Storage hint: when severe storms are forecast, park under cover or at least under trees. Insurance pays for hail damage but the deductible adds up.
Soft spot warning signs
Walk your roof carefully in soft-soled shoes. Soft spots feel like walking on a slightly cushioned surface. Other signs:
- Discoloration on the ceiling inside (yellow or brown rings)
- Bubbles or wrinkles in the membrane
- Wallpaper or trim coming loose
- Musty smell inside
- Light fixtures with rust on the mounting screws
Any of these means inspect now. Waiting makes it worse and more expensive.
Doing it yourself
Roof inspection: yes, you can do this. Walk it carefully, photograph every penetration, look for cracks in sealant.
Touching up Dicor lap sealant: yes, if you can identify the exact crack and have the right product. Use Dicor self-leveling lap sealant (for horizontal seams) and non-self-leveling (for vertical). Tube costs $8-$15 at any RV parts store.
Full reseal: more challenging. Stripping old sealant is messy and time-consuming. If you have the day and the inclination, doable. If not, shop labor is the better call.
Soft spot repair: shop work. Don't try this DIY unless you have a specific carpentry background.
Full roof replacement: shop work, full stop.
Average lifespan and replacement timing
| Membrane | Years to replacement | Annual reseal schedule |
|---|---|---|
| EPDM (rubber) | 10-15 | Reseal seams every 4-5 years |
| TPO | 15-20 | Reseal every 5-7 years |
| Fiberglass | 20+ | Inspect annually, reseal as needed |
Get a real quote
Send us photos of your roof or describe the issue. We will quote within 24 hours. Get a service quote or call 719-722-2537.
Related: RV repair costs overview, cost calculator, Mile High RV Works.
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