How to Fix an RV Roof Leak (Fast & Long-Lasting Solution)

 

How to Fix an RV Roof Leak (Fast & Long-Lasting Solution)

So you've got yourself a leaky RV roof on your RV. Not cool, brother! But don't beat yourself up. We've all been there.

Every RV owner knows that a leaky roof is a nightmare in the making. And if you don't fix it now, it's only going to turn into a 3-beer, all day-long, cuss-filled type of repair job.

The good news is that your rig isn't roasted, at least not yet... And there is hope.

So it's time to throw on your work gloves, grab your tools, and handle the job like any good man should!

With the right supplies, a little know-how, and some elbow grease, you can have your RV roof sealed up in no time and water-proofed for all the years to come.

The following guide explains why RV leaks need to be fixed ASAP, what you'll need to get the job done, and how to fix RV roof leaks quickly and easily, so you can get back on the road, and keep your family dry while you're at it.

But first...

Why RV Roof Leaks Demand Quick Action

A bit of water in your RV might not seem like a big deal, but water damage is no joke. A little drip? More like a ticking-time bomb.

Now, we're not trying to cause a panic. But it's crucial to repair your RV roof as soon as possible before any more water gets in. Otherwise, you'll be looking at some serious, irreparable damage to your recreational vehicle.

And here's why:

• Mold and mildew - Moisture can seep in through any seam and fester behind interior paneling. Once mold takes hold, it's practically impossible to get rid of without tearing the RV apart.
• Structural damage - Water intrusion can wreak serious havoc on the structural materials of your rig. Most of its frame is built with wood. And if that wood gets wet and moldy, it will rot and start falling apart from the inside out.
• Ruined interior - RV carpets, upholstery, cupboards, and appliances can all be ruined by water.
• Electrical problems - Short circuits... Corrosion... Fire... These are just some of the electrical problems you might run into. Especially if water leaks in near any of your RV's electrical components.
• That smell - Have you ever walked into a house with a damp basement where you can smell it immediately? Well, that same musty smell can take hold in your RV. Definitely not something you want.
• Reduced/No resale value - A leaky RV is just hard to sell. Sure, somebody might want to buy it to fix it up themselves. But you're definitely not going to get its full value.

So yeah, a leaky camper roof can go from bad to ugly, real quick!

RV roof maintenance is an essential part of owning and caring for your rig. That is, if you don't want it to fall apart while driving down the interstate.

But if you catch a roof leak early, all you need is a good sealant tape, a bit of gusto, and you can easily stop that leak fast!

For more tips and tricks on repairing your RV roof, you can also check out our comprehensive RV roof repair manual.

Image courtesy of C.G. @ Unsplash.com

What Causes RV Roof Leaks?

Leaks happen. And unfortunately, RV roofs are prone to developing leaks, even if you take great care of your rig.

One of the most common causes of an RV roof leak is wear and tear. Over time, roof seams can dry out and crack, especially if you're traveling in hot or dry climates.

But leakage can also occur due to a number of other factors, including:

• UV damage and weather - Your RV roof membrane is designed for most types of weather. But roof joints are prone to UV damage. Strong winds, hail, and ice storms can also cause damage to your RV roof.
• Aging seals - Seals around roof panels, skylights, vents or drain pipes can dry out and crack. This leaves your rig vulnerable to water leaks.
• Cracks - Like any type of metal buildings, cracks can happen pretty much anywhere on an RV's roof. Rust sets in, panels shift, and next thing you know... Drip, drip, drip...
• Punctures from branches - Punctures can happen after wind storms when branches and other debris falls on your RV's roof.
• Previous owner's neglect - There's nothing wrong with a pre-loved RV. But there's a chance the previous owner just didn't love it or care for it as much as you do now.

So the good news is that an RV roof leak is a very common problem, and it might not even be your fault.

But the bad news: You DO need to fix it immediately, before your motor home takes on any more damage.

Why Real Men Use RV Roof Sealant Tape Instead of Caulk?

Looking up how to fix RV roof leaks? You've likely come across two common solutions. You can use RV sealant tape or silicone repair caulk.

Sure, caulk has its place---But this ain't it!

You want the fastest, easiest and most durable solution to your problem. You need a solution that's designed to repair leaks now. And one that will prevent them in the future.

This is why you need to get your hands on a good roll of RV sealant tape.

Let's take a side-by-side look at the pros and cons of using RV sealant tape VS. fixing your leak with caulk, to help you decide which route you want to take.

Before getting started, check your RV's owner's manual. Look for information on which type of repair products are safe to use. If the RV is new, the leak might even be covered under the manufacturer warranty. So make sure to check before applying sealant tapes or silicone caulk.

Depending on the severity of your leak, neither tape nor caulk might be an adequate solution.

If your leak is coming from a particularly large area, it's not good. And you might actually need to replace the whole roof, rather than patching it up here and there.

Otherwise, you'll be in a constant battle with leaks, sealing on up just as another opens. As my dad once told me: "You've got to fix it right, or fix it twice."

Gear Up! What You Need Before You Start

Now, you're the kind of get-er-done man that we know you are. So you're probably ready to tackle the job and finish all necessary repairs before the sun goes down.

But before you get started, take a few minutes and make sure you've got all the right equipment for the job.

• RV roof sealant tape - A good quality RV sealant tape is by far THE most important item to have on hand. And don't worry. We'll explain how to choose the best tape further down. So don't even think about using Duct tape, Gorilla Tape, or other adhesives. That is, unless they're specifically designed for RVs.
• Alcohol wipes - Alcohol wipes work great for dissolving dirt and grime build up, and wiping it all up in a single shot. But you can use isopropyl alcohol, mineral spirits, or other RV cleaning products and a rag.
• Gloves - Work gloves are optional. But there can be some nasty chemicals in RV cleaners and certain adhesives. Make sure you know what you're working with. We know you're tough, but chemicals can bite! A sturdy pair of work gloves keeps you and your man mitts safe while tackling the job.
• Scissors or utility knife - RV sealant tape is nearly impossible to tear by hand. So a good, sharp pair of scissors or a utility knife is essential for making nice, straight cuts! Don't go stealing your wife's or your kid's crafting scissors... They just won't work!
• Roller - A roller is optional, but it can help you squeeze out any air bubbles that could compromise your repair. You could also use a putty knife or other similar tools for this. Just make sure they're not sharp and won't cut or rip your patch job.

If this is your first time fixing your roof, you might also want to consider purchasing an RV roof repair kit, which will include all of the tools you'll need to get the job done right.

Step-by-Step: How to Seal an RV Roof Leak

Now that you've got all the right supplies ready, it's time to get your hands dirty. Let's jump in and explain exactly how to fix your RV roof leak.

1) Locate any and all leaks

Don't just start slapping repair tape all over your RV roof. Take some time to properly identify where the water is coming in.

Inspect all joints, fasteners, openings, and roof seams for signs of water intrusion.

Especially if your RV is an older model, you might find loose sealant everywhere. This is just more leaks waiting to develop later on.

Might as well patch them all while you're at it!

One trick you can use is spritzing soapy water all over your RV's roof. Then use an air compressors to blow air through the spot where you think your leak is coming from.

See any suds bubbling up on the roof? That's where your leak is coming from!

2) Clean the surface

Adhesives don't work well when they're applied to dirty surfaces. So the next thing you need to do is clean all of the surfaces where you're planning on applying the tape.

Again, alcohol wipes work great for this. But you can use any RV cleaner or solvents you have on hand to get the job done. Just make sure to thoroughly wipe the area clean. You want no sand, dirt, dust, or debris on the surface.

A bit of dust won't prevent good sealant tape from sticking. But you do want to minimize dust as much as possible.

3) Dry the area completely

Ever hear the old saying about how you can't fix a leaky roof in the rain?

Well, the same thing applies to fixing your leaky RV roof. The area you're working on needs to be dry before applying your tape. Otherwise, it just won't stick properly.

If you're working outside in the sun, giving the surface 20 or 30 minutes should do the trick. But you should also wipe the surface with a dry cloth to absorb any moisture.

Again, moisture = poor adhesion... So make sure to dry the area thoroughly before applying the tape.

4) Cut the tape to fit

Measure twice, cut once. That's what my old man always says. And repairing your RV roof with sealant tape is no different.

You'll want to oversize your pieces of tape a few inches bigger than the hole or crack that you're sealing. Use a sharp pair of scissors or utility knife. You want straight, clean cuts without fraying or crumpling the tape.

Remember, clean cuts = clean results. And we know that's what you're after!

5) Apply tape slowly and firmly

Start by applying a single strip of tape over the opening without pulling or stretching it. Press the tape down slowly and firmly to ensure good adhesion at all points of contact.

Then, add additional pieces to your repair job. Gradually moving away from the first piece on either side.

Lap sealant tape as needed. And make sure that each piece overlaps by about 1/2 inch so that water won't be able to get in between them.

6) Press and smooth out bubbles

Make sure you're pressing and smoothing the tape out as you move along. This prevents air bubbles from getting trapped underneath.

A few air bubbles won't ruin your patch job. But the fewer air bubbles, the better!

You want the tape to be flat and flush against the RV roof surface, to ensure that it stays in place for as long as possible.

7) Optional: Use roller for max contact

If you're careful, you should be able to do a good job of applying the tape without any bubbles.

But it's still a good idea to use a roller to help you press the tape down, making sure it sticks.

Image courtesy of Paul Kansonkho @ Unsplash.com

5 Common Rookie Mistakes (Don't Be That Guy!)

We know you're the no non-sense type of do-er. So just so you don't end up with a sloppy repair job, make sure to avoid these common mistakes.

• DO NOT apply RV sealant tape to a wet or damp surface
• DO NOT apply tape without cleaning the surface first
• DO NOT stretch or pull the tape during application
• DO NOT leave gap between pieces of tape.
• DO NOT apply over sharp edges that could puncture your repair tape.

Why You Should Avoid Low Quality Sealant Tape

You need to avoid using Duct Tape or other tapes that aren't designed for use on an RV. But you should know there's a huge difference between cheap RV tape and a good-quality, durable, long-lasting tape.

Which reminds me of what dad always used to say: "Cheap tools are a lot like cheap tires... You might save yourself a few bucks. But sooner or later, you're going to skid into a mess."

Here are a few other reasons you should avoid using cheap RV sealant tape:

• Poor adhesion - Cheap tape just doesn't stick as good as a higher-quality tape. Cheap adhesives just won't live up to your military-grade standards.
• Shorter lifespan - Cheap tape is prone to cracking, shrinking, and letting water back in.
• False sense of safety - You might stop your leak today. But cheap tape doesn't last, which means you'll probably need to re-do the job next season.
• Low flex - Cheap tape won't last long when your RV is on the road. All that movement and flexing can cause cheap tape to lift, tear, and break that watertight seal.

Ultimately, buying cheap quality RV sealant tape can turn a $30 repair job into a $3,000 repair. And when you realize you still have a leak, you'll wish you bought better tape in the first place.

How Long Does Good RV Sealant Tape Last?

A good, high-quality RV sealant tape lasts between 15-20 years when applied properly. But the key word here is "when applied properly."

Our sealant tape is designed to withstand all-weather and action. That means rain, snow, direct sun, and the wear and tear from rigorous travel.

But if you don't take the time to prep your surface, apply the tape carefully, or if you use a cheap-quality RV repair tape... Then there's no guarantees your repair will stop your leak now, or prevent it from leaking in the future.

Why TitanPatch Pro Tape By Tool Troopers Is Built Differently

There are plenty of RV sealant tapes on the market, but you need a solution that's as strong and durable as you are.

That's why Tool Troopers offers a one-of-a-kind RV sealant tape.

TitanPatch Pro has extreme adhesive grip for long-lasting performance. And a water-tight seal that lasts.

Our tape can be applied in any temperature, from -40°F to 190°F. It has a unique UV-blocking layer. So it's protects your repair job from sun damage. And it's designed for use on all RV surfaces. You can slap it onto EPDM, rubber, metal, fiberglass, and virtually any surfaces you'll find on your rig.

Looking for an easy to apply RV roof leak solution guaranteed to last? Then TitanPatch Pro tape is THE product for you.

Ready to Seal It Right?

Here's a quick recap of how to fix RV roof leaks quickly and easily with sealant tape.

1. Find the source of your leak
2. Clean the work area thoroughly
3. Dry the surface
4. Apply sealant tape, overlapping pieces to build a patch
5. Use a roller to press out any air bubbles

That's it! That's all! Your RV roof repair will keep water out today, and prevent leaks in the future!

Got any other RV repair jobs you need to tackle? Looking for other RV parts or accessories?

Check out our Shop for all your RV needs!

Image courtesy of Eugene Quek @ Unsplash.com

RV Roof Repair - Frequently Asked Questions

Well there you have it, my good man!

You've now got all the tools and know-how to fix your leaky RV roof in no time! But before you go, be sure to check out these frequently asked questions about fixing a leaky RV roof.

What type of surfaces can I use RV sealant tape on?

RV sealant tape works great on EPDM, rubber, galvanized steel, fiberglass, and plastics. Just make sure the surface is clean and dry before applying the tape. Sealant tape can also be used on wood, stonework, and other porous surfaces, as long as the surface isn't too rough.

How can I prevent roof leaks in the future?

Avoid parking your RV in direct sun for too long or use an RV cover when storing your RV for the off-season. Don't park under or near trees or let leaves, branches or other debris build up on the roof. Make sure to inspect your RV frame, roof seals, patch jobs and caulking at least once per season. Find and prevent those pesky leaks before they happen.

Does RV roof sealant tape work better than RV repair caulk?

RV caulk and sealant tapes are both effective solutions for repairing RV roofs. But RV owners should opt for a high-quality sealant tape. Kind of like Tool Trooper's TitanPatch Pro tape. It won't dry out or crack like caulking will. Sealant tape is also quicker and easier to apply, and you won't make a mess while completing your repair.

What can I use for emergency leak repairs on my RV roof?

Liquid rubber products like Flex Seal, Duct Tape or Gorilla Tape can be a life saver in an emergency. But they're not designed for the long-term durability you need. Sure, they'll stop your leak temporarily. But you'll want a high-quality RV-specific tape to complete the job properly.

Can I apply RV sealant type in any weather?

No, you should not apply RV sealant tape in the rain or snow. The moisture will prevent the adhesive from sticking to the surface properly. The surface must be clean and dry before you apply RV sealant tape. If you're stuck in the rain with a leaky roof, stick a bucket under it, or cover the roof with a cover or tarp. Then wait until the sky clears before completing your repair.

Should I scrape out and remove old caulk before applying sealant tape?

Yes, you do need to remove old caulk, sealant tape, or other old adhesives before applying new sealant tape. Make sure there's no old sealants left on the surface. This will ensure a better, stronger bond that will last longer.