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Eight years ago, my partner Jen and I sold most of what we owned, bought a 28-foot travel trailer, and pointed the truck west. We were convinced we had done our homework. We had watched the YouTube videos. We had read the forums. We had even bought a tool kit. What we had not done — could not have done — was actually live it. And living it has a way of teaching lessons that no forum thread ever could.
This is not a post about the minor stuff. Replacing a light switch or re-caulking a window — those are Tuesday afternoon problems. I am talking about the repairs that stopped us cold. The ones that cost us real money, real time, and in a few cases, real sleep. If you are considering full time RV living, or you are already in it and wondering why nobody warned you about certain things, this is the post I wish had existed when we started.
The Roof: Your Single Most Important Maintenance Job
In year two, we developed a soft spot in our floor near the dinette. It was about the size of a dinner plate and felt spongy underfoot. I assumed something had splashed under the trailer during a rainy-week stay in Tennessee. I was wrong by about eight months. The water had been coming in through a tiny, nearly invisible separation at the front roof seam, traveling along the interior framing, and rotting the subfloor from the inside before we ever noticed.
The repair cost us $2,200 at an RV shop in Knoxville. The preventive maintenance that would have stopped it costs about $40 a year in lap sealant and maybe 90 minutes of your time.
Here is what we do now, without exception:
- Full roof inspection every 90 days, more often if we have been through heavy rain or hail
- Dicor self-leveling lap sealant on every seam, vent, and roof penetration — reapplied annually or whenever we see cracking
- A clean, dry cloth wipe-down before any sealant goes on, because sealant over grime does not bond properly
- Photos of every seam taken each inspection so I can compare year-over-year and catch changes early
If you take nothing else from this post: get on your roof every three months. No exceptions. Water damage is the silent killer of RVs, and it almost always starts at the roof.
Slide-Out Failures Do Not Warn You
Our slide-out motor quit on us at a campground outside Albuquerque in July. It did not make noise first. It did not slow down first. It worked fine on a Tuesday and on Wednesday it simply did not move. The slide was partially extended, which meant we could not drive the trailer, which meant we were stuck — in 104-degree heat — while we waited three days for a mobile RV technician to get to us.
The fix itself was not the most expensive thing we have dealt with. But the situation was miserable enough that I started researching preventive care the moment we were back on the road.
What I learned, and what our technician confirmed, is that most slide-out failures come down to two things: lack of lubrication and ignoring early seal wear. The rubber seals on slides take constant abuse from weather, UV exposure, and the mechanical friction of the slide moving in and out. When they start to harden and crack, they let in moisture and also create resistance that eventually burns out the motor.
We now use a dedicated slide-out rubber seal conditioner every six weeks and apply a dry PTFE lubricant to the slide rails quarterly. It takes 20 minutes. In the five years since Albuquerque, we have had zero slide issues.
The Electrical System Almost Broke Us
I want to be honest here: I am not an electrician. This is the one area of full time RV living repairs where I consistently feel in over my head, and it is also the area where we have made our most expensive mistakes.
In year four, we started having intermittent power issues — lights flickering, the refrigerator cycling off, the converter behaving strangely. We chased that problem for three months, replacing the converter, then the battery bank, before a technician in Portland finally found a corroded shore power connection at the trailer’s main panel. The corrosion had been building for years. Total cost between parts, labor, and two misdiagnosed repairs: just over $1,800.
The honest caveat I will give you is this: if your electrical problem is anything beyond a blown fuse or a tripped breaker, get a professional involved before you start replacing parts. I know that feels like giving up. It is not. It is saving money. We learned that the hard way twice.
What you can do yourself, and should do annually:
- Inspect all exterior connection points for corrosion and treat with dielectric grease
- Check battery terminals and cable connections — loose or corroded terminals cause more problems than bad batteries
- Test your GFCI outlets and reset them manually every few months
- Know where your main breaker panel is and understand the basic layout before you ever need it in an emergency
Fresh and Black Water Lines in Freezing Temperatures
We spent a winter in northern Montana in year three. We were prepared, or thought we were. We had skirted the trailer, had heat tape on the exposed lines, and kept the interior warm. What we had not done was insulate the underbelly drain valve — the one right at the edge of the skirt where the cold air pooled at night. It froze solid over a two-night cold snap that hit minus 22 degrees Fahrenheit. When it thawed, it cracked. The resulting leak was under the trailer where we did not see it immediately.
A cracked drain valve is a cheap part. The water damage to the underbelly insulation and a section of the subfloor was not. That repair ran us close to $900.
Now, when we are camping below 20 degrees, every water line and valve gets checked. We use pipe insulation foam on every exposed section and keep the interior cabinet doors under the sink open so heat circulates. We also added a small tank heater pad to the freshwater tank, which has been worth every penny of its modest price.
What I Use and Recommend
After eight years and more repairs than I want to tally up, a few resources have genuinely earned their place in our rig. If you are serious about tackling full time RV living repairs yourself — or at least understanding what a technician is telling you — these are worth having.
The RV Repair & Maintenance Manual was one of the first things I read cover to cover after our subfloor disaster. It is dense and technical, but it is the kind of reference book you return to constantly. I have dog-eared probably 40 pages at this point.
For more visual learners or newer RVers, the DIY RV Illustrated Repair Manual (RV Owners DIY Series) is a solid companion. The diagrams alone have saved me from several misdiagnoses when I could not quite visualize what a written description was telling me.
As for tools, the Lippert 15-Piece RV Tool Kit for Maintenance on Motorhomes, 5th Wheel Campers and Travel Trailers is specifically designed for the fasteners and hardware you actually encounter on an RV — not just a generic toolbox repackaged with an RV logo. We keep ours accessible at all times, not buried under the bed storage.
What Eight Years Has Actually Taught Me
The repairs that humbled me most were not the expensive ones, exactly — they were the ones I could have prevented with an extra 30 minutes of attention two months earlier. Every major failure we have had traces back to something small that was ignored, missed, or deprioritized because we were tired or behind schedule or just did not want to deal with it that day.
Full time RV living is one of the best decisions we have ever made. I would do it again without hesitation. But I would do it with more respect for the maintenance schedule and a lot less confidence that things would just work out. They work out because you work at them. That is the part nobody tells you in the pretty Instagram posts — and the part that makes the life genuinely sustainable once you accept it.
Stay on top of it, and this lifestyle rewards you. Let it slide, and it will find a way to remind you who is actually in charge.