Arizona weather can change quickly.

One minute your RV is sitting safely in the driveway or storage lot. The next, strong winds are throwing branches, gravel, roofing material, and other debris through the air. Add heavy rain, hail, and dust, and an RV exterior can take a surprising amount of punishment in a short period.

Some storm damage is obvious. A fallen branch may crack a sidewall, break a roof component, or leave a visible puncture.

Other damage is much easier to overlook.

A hairline fiberglass crack, chipped seam, loose piece of trim, or damaged roof seal may seem minor after the storm passes. Unfortunately, even a small opening can give rainwater a path into the RV.

That is when a relatively straightforward exterior repair can become a much larger problem involving water intrusion, wall damage, or delamination.

Storm damage to RV fiberglass panels can include scratches, paint damage, cracks, punctures, fractured corners, separated wall layers, and hidden moisture problems.

At RV Renovators in Mesa, Arizona, we have more than 30 years of experience working on motorhomes, fifth wheels, travel trailers, campers, and other recreational vehicles. Our services include RV collision and body repair, fiberglass restoration, paint refinishing, delamination repair, roof repair, slide-out repair, and insurance-related repairs.

If your RV has recently been through severe weather, here are 10 warning signs to look for and the steps you should take next.

1. Look for Hairline Cracks in the Fiberglass

Not every fiberglass crack is large enough to notice from several feet away.

After a storm, inspect the exterior up close.

Pay particular attention to:

• Corners
• Panel edges
• Window openings
• Compartment openings
• Slide-out areas
• Roof-to-wall transitions
• Areas struck by debris

Fine cracks may form when a panel flexes under impact.

A hairline crack may initially look cosmetic, but its location and depth matter. If the protective exterior surface has been compromised, moisture may eventually reach the material underneath.

Do not assume a crack is harmless because the RV still looks good from a distance.

A professional inspection can determine whether the damage only affects the finish or extends deeper into the fiberglass structure.

2. Check for Chips and Punctures

Sharp debris can do considerably more damage than wind alone.

Branches, gravel, metal fragments, roofing pieces, and other objects may strike the fiberglass with enough force to chip or puncture it.

Look for:

• Missing fiberglass
• Small holes
• Deep gouges
• Chipped corners
• Exposed material
• Craters from impact

A puncture creates an obvious path for water.

Even when the hole seems small, the surrounding fiberglass may have fractured beyond the visible opening.

Professional technicians may need to remove loose or damaged material, rebuild the fiberglass layers, restore the surface shape, and refinish the repaired area.

Simply filling the visible hole with sealant usually does not restore the damaged panel.

3. Inspect Scratches More Closely Than You Think You Need To

Wind-driven debris frequently leaves scratches and scuffs.

Some are purely cosmetic.

Others go through:

• Clear coat
• Paint
• Gelcoat
• Protective surface layers
• Fiberglass

A light surface mark may only need polishing or refinishing.

A deeper scratch needs additional evaluation.

Run your inspection visually rather than aggressively touching or scraping the damaged area. If you can clearly see exposed material beneath the finish, it is worth having the damage checked.

Correct repair depends on how far the scratch penetrated.

4. Watch for Bubbling or Wavy Sidewalls

A fiberglass sidewall should generally look flat and consistent.

If you begin noticing:

• Bubbles
• Bulges
• Waves
• Ripples
• Raised sections
• Areas separating from the wall

the problem may involve more than surface damage.

These can be warning signs of RV delamination.

Laminated RV walls contain several materials bonded together. When the bond between those layers fails, the fiberglass exterior may begin separating from the structure underneath.

Moisture can contribute to this condition.

A storm-damaged seam, crack, roof edge, window opening, or puncture may allow water behind the exterior. Over time, that moisture can weaken adhesives and other wall materials.

Delamination should be evaluated rather than covered cosmetically.

The source of the moisture needs to be found before the wall is restored.

5. Check the Roof for Storm Damage

Many RV owners inspect the sidewalls after severe weather but forget the roof.

That is a mistake.

The roof often receives some of the strongest exposure during hail, wind, and falling-debris events.

Storm damage may affect:

• Roof membranes
• Fiberglass roofing
• Roof seams
• Vents
• Skylights
• Air-conditioning units
• Antennas
• Solar-panel mounts
• Roof edges
• Sealants

A branch may create a small puncture that is difficult to see from ground level.

Wind can also affect sealants or components that were already aging.

Water entering through the roof may travel through insulation, framing, or interior materials before it becomes visible.

As a result, an interior water stain may appear several feet away from the actual leak.

If climbing onto the roof would be unsafe, do not attempt the inspection yourself. Have a qualified RV service facility examine it.

6. Inspect Windows, Trim, and Exterior Seals

Not all water intrusion comes through broken fiberglass.

Storms may damage the seals and trim surrounding:

• Windows
• Doors
• Exterior lights
• Marker lights
• Compartments
• Utility openings
• Slide-outs
• Exterior accessories

Strong wind may loosen trim, while debris can crack or shift sealant.

Look for:

• Gaps
• Loose molding
• Cracked sealant
• Missing caulk
• Bent trim
• Components pulling away from the wall

These areas are particularly important because they create penetrations through the exterior wall system.

A storm does not have to break the main fiberglass panel to create a leak.

7. Look for Interior Water Stains

After checking outside, inspect the interior.

Water intrusion may reveal itself through:

• Brown ceiling stains
• Yellow discoloration
• Damp wall panels
• Wet carpet
• Soft flooring
• Moisture around windows
• Stains inside cabinets
• Damp storage compartments

Do not assume a small stain represents a small leak.

Water can travel along framing or behind wall materials before becoming visible.

If you find an interior stain after a storm, technicians should identify where the water entered rather than treating only the visible interior damage.

Stopping the leak comes first.

8. Pay Attention to Soft Areas and Musty Odors

Water damage does not always announce itself with an obvious stain.

Sometimes the first clue is how the RV feels or smells.

Watch for:

• Soft wall areas
• Spongy flooring
• Flexible exterior sections
• Musty odors
• Persistent damp smells
• Swollen cabinetry
• Loose wall coverings

These symptoms may indicate moisture has remained trapped inside the RV.

Prolonged moisture can affect:

• Wood
• Insulation
• Adhesives
• Wall panels
• Flooring
• Cabinet materials

The longer the moisture remains, the more extensive the repair may become.

A professional inspection can help determine how far the damage extends.

9. Check Slide-Outs Carefully

Slide-outs introduce additional seams, seals, roof surfaces, and mechanical components.

That makes them an important part of any post-storm inspection.

Look for:

• Torn slide seals
• Damaged toppers
• Roof punctures
• Loose trim
• Water stains
• Misalignment
• Uneven movement
• Gaps when closed
• Water around the interior opening

Wind-driven rain can reach slide-out areas from angles that ordinary rainfall may not.

If a slide-out was struck by debris, its alignment may also have changed.

Do not force a slide that begins operating differently after a storm.

Continuing to run a damaged or misaligned mechanism may make the problem worse.

10. Do Not Ignore Paint and Finish Damage

Paint damage may seem less urgent than a punctured panel or leaking roof.

However, the finish is part of the RV exterior system.

Storms may leave:

• Chips
• Scratches
• Paint transfer
• Scuffs
• Clear-coat damage
• Abraded areas
• Damaged graphics

On full-body painted motorhomes, matching the original appearance may require multi-stage refinishing and careful blending.

RV paint can involve:

• Multiple colors
• Metallic finishes
• Pearlescent coatings
• Graphics
• Stripes
• Clear coats

Professional refinishing aims to restore the damaged area without leaving an obvious patch.

The fiberglass repair should be completed correctly before cosmetic refinishing begins.

What Happens When Water Gets Behind RV Fiberglass?

Water intrusion can be more destructive than the original impact.

RV walls may contain several bonded layers, such as:

• Exterior fiberglass
• Adhesive
• Backing materials
• Insulation
• Framing
• Interior wall panels

Once moisture enters, it can migrate beyond the damaged area.

Depending on the construction, prolonged moisture may contribute to:

• Delamination
• Wood rot
• Swollen materials
• Failed adhesives
• Interior staining
• Damaged insulation
• Musty odors
• Soft flooring
• Mold or mildew growth

That is why sealing over a visible crack without evaluating what happened behind it may not be enough.

The repair should address both:

1. Where the water entered
2. What the water affected after entry

How Storm-Damaged RV Fiberglass Is Repaired

The repair method depends on the severity, location, and structure of the damage.

Minor Surface Damage

Small cosmetic areas may need:

• Sanding
• Surface preparation
• Primer
• Paint
• Clear coat
• Polishing

Fiberglass Cracks

A fiberglass crack may require the technician to:

1. Open and prepare the damaged area
2. Remove weakened material
3. Rebuild the fiberglass
4. Shape and level the repair
5. Prime the surface
6. Match and blend the finish

Punctures and Larger Damage

Large openings may require:

• Structural inspection
• Backing repair
• Fiberglass reconstruction
• Panel work
• Sealing
• Paint refinishing

Delamination

When wall layers have separated, the repair becomes more involved.

Technicians must determine:

• Why the wall separated
• Whether moisture remains inside
• How much of the wall is affected
• Whether framing or backing material is damaged
• Whether the panel can be repaired or needs more extensive reconstruction

The visible bubble is only part of the repair.

Can Hail Damage RV Fiberglass?

Yes.

Hail damage depends on:

• Hailstone size
• Wind speed
• Impact angle
• Exterior material
• Existing condition

Hail may affect:

• Fiberglass
• Paint
• Roof materials
• Skylights
• Vents
• Air-conditioning covers
• Windows
• Exterior accessories

Small impact marks may be difficult to identify, especially across a large sidewall or roof.

After a significant hail event, a detailed inspection can help document damage before it worsens.

What Should You Do Immediately After Storm Damage?

The hours following a storm can make a difference.

Step 1: Make Sure the Area Is Safe

Stay away from:

• Downed power lines
• Unstable branches
• Floodwater
• Hanging debris
• Electrical hazards

Your safety comes before the RV.

Step 2: Photograph the Damage

Take:

• Wide photos of the RV
• Photos from each side
• Close-ups of damaged areas
• Roof photographs when safely possible
• Interior photos of water stains

Documentation can be useful if you file an insurance claim.

Step 3: Prevent Additional Water Entry When Safe

If there is an obvious opening, temporary weather protection may help prevent additional rain from entering.

However, avoid making permanent repairs before the damage has been documented and evaluated if an insurance claim may be involved.

Do not climb onto an unstable or wet roof.

Step 4: Check the Interior

Look for moisture, water stains, damp cabinets, flooring damage, and odors.

Step 5: Schedule a Professional Inspection

An RV repair facility can evaluate damage that is difficult to see from the exterior alone.

Should You File an RV Insurance Claim for Storm Damage?

That depends on your coverage, deductible, and the extent of the damage.

Storm losses may potentially involve comprehensive or other applicable coverage, but policies differ.

Your insurance company determines:

• Whether the loss is covered
• Your deductible
• Claim limits
• Exclusions
• Authorization requirements

Before filing or proceeding with repairs, review your policy or contact your insurer.

Good documentation can help.

Save:

• Photos
• Videos
• Dates
• Weather information
• Repair estimates
• Communication with the insurer

RV Renovators provides free insurance estimates and works with many major insurance companies as a preferred insurance repair facility.

Our team can document the damage and prepare an estimate based on the repair needs we identify.

Hidden Storm Damage an Insurance Estimate May Need to Address

Initial storm damage estimates sometimes change after disassembly.

Once technicians remove panels, trim, or interior materials, they may discover:

• Wet insulation
• Broken framing
• Additional fiberglass cracking
• Hidden roof damage
• Wall separation
• Damaged wiring
• Interior water damage

When an insurance claim is involved, the shop may need to prepare a supplemental estimate documenting these additional repairs.

That is normal with complex RV body work because not every condition can be seen during the first exterior inspection.

Can You Keep Using an RV With Storm Damage?

It depends on the damage.

A superficial scratch may not prevent travel.

However, you should not assume an RV is safe simply because it starts, drives, or tows normally.

Avoid travel until the RV has been evaluated if the storm damaged:

• Roof structure
• Sidewall structure
• Lights
• Windows
• Slide-outs
• Doors
• Electrical systems
• Major seals
• Exterior panels that may detach

Water intrusion also deserves attention before additional weather exposure.

A professional can help determine whether temporary use is reasonable.

Why DIY Fiberglass Patches Can Create Problems

RV owners sometimes try to solve damage quickly with caulk, adhesive, tape, or fiberglass kits.

Temporary protection may occasionally be useful to keep water out until the RV reaches a repair facility.

However, permanent fiberglass restoration requires more than covering the opening.

A lasting repair may need:

• Damaged material removal
• Structural evaluation
• Correct fiberglass reinforcement
• Surface shaping
• Seal restoration
• Primer
• Paint matching
• Clear coat

A poorly executed patch can make professional refinishing more difficult later.

If insurance is involved, document everything before making changes.

Why Experience Matters With RV Fiberglass Repair

RV body repair differs significantly from ordinary automotive repair.

RVs use:

• Larger exterior panels
• Laminated walls
• Specialized adhesives
• Roof-to-wall transitions
• Slide-outs
• Windows and openings
• Custom paint systems
• Manufacturer-specific construction

A fiberglass crack may involve only the exterior—or it may connect to a much larger structural or moisture problem.

Experienced RV technicians know to look beyond the visible damage.

They also understand that restoring the exterior appearance is only one part of the job.

The repaired area must also be:

• Structurally sound
• Properly sealed
• Correctly aligned
• Protected against future water entry

Why RV Owners Choose RV Renovators

RV Renovators has been helping Arizona and Southwest RV owners for more than 30 years.

From our full-service facility in Mesa, Arizona, we work on:

• Motorhomes
• Fifth wheels
• Travel trailers
• Campers
• Toy haulers

Our services include:

• RV collision repair
• RV fiberglass repair
• Paint and refinishing
• Delamination repair
• RV roof repair
• Slide-out repair
• Structural body repairs
• Water-damage restoration
• Insurance repairs
• Manufacturer warranty work
• Annual maintenance
• Interior renovation

We also provide free insurance estimates and work as a preferred insurance repair facility for many major insurance companies.

Whether a storm left a few damaged fiberglass areas or caused extensive exterior and water damage, our team can inspect the RV and determine what needs attention.

Frequently Asked Questions

Can hail damage RV fiberglass?

Yes. Hail may chip, crack, dent, or damage exterior finishes depending on the size of the hailstones, wind, and construction of the RV.

Can a small fiberglass crack lead to water damage?

Yes. If the crack penetrates the protective exterior and allows water into the wall assembly, moisture can affect materials behind the fiberglass.

What does RV delamination look like?

Common signs include bubbles, waves, ripples, bulges, or sections where the fiberglass no longer lies flat against the wall.

Can storm-damaged fiberglass be repaired without replacing the entire panel?

Often, yes. The repair method depends on the size, depth, location, and condition of the underlying structure.

Should I inspect the RV roof after a storm?

Yes. Roof seams, membranes, vents, skylights, air-conditioning units, slide-out roofs, and sealants should be checked after severe weather.

Can water travel inside an RV wall?

Yes. Water may move along framing, insulation, or other materials before becoming visible somewhere else inside the RV.

Should I file an insurance claim for RV storm damage?

That depends on the damage and your insurance policy. Contact your insurance provider to determine coverage, deductible, and claim requirements.

Does RV Renovators provide insurance estimates?

Yes. RV Renovators provides free insurance estimates and works with many major insurance companies.

Can I drive my RV after storm damage?

That depends on what was damaged. Structural, roof, lighting, slide-out, window, electrical, or loose body-panel damage should be evaluated before travel.

Does RV Renovators repair delamination?

Yes. RV Renovators provides fiberglass and delamination repairs along with body, roof, paint, slide-out, and collision services.

Final Thoughts

Storm damage to RV fiberglass panels can range from a few cosmetic scratches to serious structural and water-related problems.

The 10 warning signs RV owners should watch for include:

1. Hairline fiberglass cracks
2. Chips or punctures
3. Deep scratches
4. Wavy or bubbling sidewalls
5. Roof damage
6. Damaged seals and trim
7. Interior water stains
8. Soft areas or musty odors
9. Slide-out damage
10. Paint and finish damage

The important thing is not to judge the severity only by what you can see from several feet away.

A small crack or damaged seal may allow moisture to move behind the fiberglass. Once that happens, the repair can involve wall materials, insulation, framing, flooring, or delamination.

After severe weather, document the condition, inspect the exterior and interior carefully, and have suspicious damage professionally evaluated.

At RV Renovators in Mesa, Arizona, we combine more than 30 years of experience with full-service RV fiberglass, body, paint, delamination, roof, slide-out, water-damage, and insurance repair capabilities.

Finding storm damage early gives you the best opportunity to address the problem before another Arizona storm makes it worse.