RV Roof Repair, Reseal or Replace: How to Tell Which One You Need
Most owners arrive at this question after finding a stain on the ceiling, and most of them are asking the wrong thing first. The question is not what your roof looks like. It is whether the wood underneath it is still dry and solid. That single answer decides whether you are looking at sealant work or a full replacement, and the difference between the two is the difference between a maintenance bill and a serious one. Here is how we make that call at our shop in Chino, and what drives the price of each.
What kind of roof do you have, and why does it matter?
Four types cover almost everything on the road, and they fail differently.
EPDM rubber is the most common membrane on travel trailers and many motorhomes. It is a flexible sheet, usually white, and it chalks as it ages. Rub it with a finger and if you get white residue, that is EPDM giving up its surface layer. It is repairable and coatable.
TPO is the newer membrane. It does not chalk the way EPDM does, but it can become brittle and crack with long UV exposure, and not every coating product is compatible with it.
Fiberglass is a hard, glossy one-piece roof found on higher-end coaches. It does not tear, but it crazes and can delaminate, and repairs are a fiberglass job rather than a membrane job.
Aluminum is the older corrugated roof. It is durable and its failures are at the seams and fasteners rather than in the panel.
Getting the type right matters because a coating that works beautifully on sound EPDM can peel off TPO, and a fiberglass roof does not take a membrane repair at all.
What actually fails on an RV roof?
The membrane is almost never the first thing to go. Sealant is. Every roof has a set of penetrations, the vents, the air conditioner, the skylight, the antenna, the refrigerator vent, the plumbing vents, and the perimeter where the roof meets the front and rear caps and the sidewall trim. Each one is sealed, and sealant is a consumable. Heat cycling through an Inland Empire summer expands and contracts everything on that roof daily, and after enough cycles the sealant shrinks, pulls away from the flange, and opens a hairline gap. It rains here in a handful of concentrated weeks, and that is when the gap becomes a leak. Coaches parked uncovered at storage lots around Chino and Ontario go through this faster than coaches kept under cover.
That is why an annual look at the roof is the cheapest thing an RV owner can do, and why a leak found at the sealant stage costs a fraction of one found on the ceiling.
How do I know if my RV roof needs replacing?
Press on it. That is the check, and it is the one that decides everything. If the decking under the membrane gives, feels spongy, or dips underfoot, water has already been in the wood and you are into replacement territory regardless of how the surface looks. If the decking is firm everywhere and the membrane is intact, you are almost certainly in reseal territory regardless of how tired the surface looks.
Other signs that point to replacement: the membrane is torn, has shrunk back from the edges or seams, or is separating from the decking so it feels loose or bubbled underneath. Stains spreading on the interior ceiling, a ceiling panel that has started to sag or bubble, or a soft spot showing up in a wall or floor below the roofline all mean water has been traveling for a while. Water does not stop at the ceiling. Once it reaches the wall cavity it goes down, which is why a neglected roof leak eventually becomes an RV floor repair as well.
When is a reseal enough?
When the membrane is sound and the failure is at the penetrations, which is the majority of what comes through our door. A proper reseal is not a tube of caulk over the old material. The failed sealant is removed, the flange and surrounding membrane are cleaned back to a bondable surface, and new sealant is applied, self-leveling on horizontal surfaces so it flows into the joint, non-sag on the vertical seams at the caps. Doing it over the top of cracked old sealant traps the gap underneath and buys a season at best. Done properly and inspected yearly, resealing is what keeps a roof out of the replacement conversation for a long time.
What about a roof coating? Do you do those?
No. Roof coating is not a service we offer, and it is worth explaining why rather than just saying no.
A coating only ever makes sense in one narrow situation: a membrane that is aging but genuinely sound, chalking and tired-looking but still fully adhered, over decking that is completely dry. In that situation it renews the surface and adds UV protection. Outside that situation it is money spent on hiding a problem.
There are three ways it goes wrong, and they are where owners lose the most. A coating over wet decking seals the moisture in and the wood keeps rotting where nobody can see it. A coating over a torn or separating membrane bridges the gap without fixing it, and the tear reopens under it. A coating over an unprepped or incompatible surface peels, and now the next repair has to strip the coating off before it can start. If someone quotes you a coating without getting on the roof and checking the decking first, that tells you what you need to know about the quote.
What we do instead is the two jobs that actually resolve the problem: reseal the penetrations properly while the membrane is sound, or replace the membrane when it is not. That is the fork, and a coating does not sit between them as often as it is sold that way.
What does an RV roof repair or replacement cost?
Resealing the roof items, meaning the vents, skylights, antennas and the rest of the penetrations, typically runs $2,600 to $3,300 depending on the size of the coach and how many items are up there. That figure does not include the left and right roof edge molding, which is a separate job and is quoted separately when it needs doing.
Full replacement with a new membrane generally runs $12,000 to $18,000. It varies with the length of the coach, the condition it is in, and how many roof items come off and go back on. Above all it varies with how much of the decking underneath has to be replaced, and that is the part nobody knows until the old roof is off.
We do not offer roof coatings. That is covered above and it is a deliberate position, not a gap in our services.
Those are ranges, not quotes. Length and roof type are known up front. What is not known until we are on the roof is how much of the decking is wet, and that is the variable that moves a replacement quote the most.
Every estimate we write carries a budget for parts at the start and trues up to the parts the job actually uses. On roof work that means decking, trim, vent flanges, skylights and air conditioner gaskets that turn out to be damaged or brittle once they come off, which is normal on a roof old enough to need this work. We show you what came off and why it is being replaced.
Will insurance cover an RV roof?
It depends on the cause, not on the cost. A roof damaged by a sudden event, a falling branch, hail, a collision with a low clearance, is the kind of loss carriers evaluate as a claim. A roof that failed gradually because the sealant was never maintained is normally treated as wear and is not covered. We do not make that determination, your policy and your adjuster do, and we document the damage so the decision is made on the evidence. We manage collision and storm claims in-house and work supplements directly with adjusters. Details are on our RV insurance claims page.
Do you offer mobile RV roof repair or house calls?
No. McBride's is an in-shop facility at 13788 Oaks Ave in Chino, and we do not send technicians to your location or to a storage lot. Roof work needs the coach under cover, needs the surface genuinely dry, and on a replacement it needs air conditioners and vents removed and reset properly. Bring it to Chino and the whole job happens in one place.
Frequently asked questions about RV roof cost
How often should an RV roof be resealed?
Inspect it at least once a year and after any trip that involved low branches or hard weather. Sealant is usually addressed as it shows failure rather than on a fixed schedule, and in this climate it tends to need attention sooner than owners expect.
Can I coat the roof myself?
The products are sold to owners and the application is not difficult, and we do not sell coatings so we have nothing riding on the answer. The part that is difficult is judging whether the decking is dry and whether the membrane is sound enough to hold a coating at all, and that judgment is what decides whether the money is well spent or wasted. Have it looked at before you buy the product, not after.
How long does a roof replacement take?
Plan on the coach being with us rather than a same-week turnaround, because the decking has to be inspected and any wet sections have to be dried or replaced before the new membrane goes down. We give you a timeline once the old roof is off and we can see the condition underneath.
Do you replace roofs on travel trailers and fifth wheels?
Yes. Motorhomes, travel trailers, fifth wheels and toy haulers.
There is a stain on my ceiling but the roof looks fine. What now?
Bring it in. A stain means water has already made it through, and the entry point is frequently nowhere near the stain because water travels along framing before it drops. Finding the actual entry point is the job.
Which areas do you serve?
Chino, Chino Hills, Diamond Bar, Montclair, Upland, Ontario, Rancho Cucamonga, Corona, Norco, Eastvale, Pomona, Yorba Linda, and the surrounding Inland Empire.
Hear From Our Satisfied Customers
They are always professional, courteous and they have resolved any and every issue I had.
If you have found a stain, a soft spot, or sealant that has pulled away, bring the coach in before the rain arrives. McBride's RV is family-owned in Chino since 1967, and we get on the roof and show you what is there before we quote anything. Walk-ins welcome. Call (909) 627-7566 and we will book you in. More on the work itself is on our RV roof repair and replacement page.
McBride's RV Service & Paint, BAR ARD 314817, 13788 Oaks Ave, Chino, CA 91710, (909) 627-7566.