Intrusion (in-troo-zhun)...
The process by which water can slowly enter a recreational vehicle around seal points creating mold, mildew, and eventually ruining what once was an enjoyable RV.
Inspection and awareness.

These are the keys to the prevention of water intrusion. Yearly inspections by Motorhome Doctor can literally suspend the need to pay thousands of dollars in repair bills.

Storm Damage ?
If your RV becomes or has been exposed to violent weather conditions please have your roof and vent systems checked. Most insurance covers storm damage, few cover water intrusion.

The Worst Leak Your RV Will EVER Have Is The One You Can't See! 


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Delamination

There is a 2 fold reason for delamination. The first part is that water gets into the wall. The second part is that the exterior fiberglass panel had a luan (wood) backing. Since there was wood involved, once the wood got wet, it rotted and came apart. The new construction glues the fiberglass directly to the frame. Even if water gets in, the wall stays glued to the frame, hence no delamination. BUT the real problem of delamination is water damage, which still can occur. If water gets into the wall, the wall frame will rust, the insulation gets soaked, and mildew grows. So all the secondary damage that occurs with delamination can still occur in the newer type construction. Your real hope is that modern glues are much better than they used to be, so you are less likely to get water in in the first place.

The fronts and the rear walls on most trailers are just hung fiberglass sheets, with the rear wall usually having wood studs.  

Most sidewalls are laminated walls, not really vacuum bonded as most people think, but each layer sprayed with glue, then run through pinch rollers to seal. That's why you can look down the sides and see lines and waves as the rollers squeeze there way through.

Don't let them kid you, if it is a bubble, it is delamination. The hung walls do move twist and wave in different temps, but a bubble is still a bubble.

Filon is a thin sheet of Fiberglass material glue bonded onto a very thin sheen of Luan plywood. Once water gets on the Filon backer board, it swells up, the Filon delaminates from the glue and you get the bubble or rippled exterior. 

What To Look For The first evidence of a delamination problem is bubbles (or blisters) forming on the sidewalls as the luan plywood under the outer fiberglass layer breaks down, allowing it to pull away from the wall structure.
Delamination is generally caused by moisture infiltrating the wall and destroying the integrity of the luan plywood.
Flexing in the wall structure can also lead to the adhesive failing or cracks developing. Cracks are another similar issue that will rapidly send the value of your investment plummeting.

Buyer Beware: If You Spot Delamination Or Cracks. Over the years, I’ve seen many RVs that have delamination issues that just continue to get worse.

This should be a huge red flag if you’re shopping for a used RV of any make or model.

If you detect any area where you feel the fiberglass has pulled away from the inner structure, just pass that RV by.
In some instances structural integrity of the whole RV has been compromised. The wall skin supplies some of the strength of the entire wall. Picture it like your house without the outer skin being attached to the studs. The house would be weakened to the point of collapse.

The cost of replacing a sidewall would likely surpass the total value of the entire RV. As the delamination gets worse — and it will — the value of your investment will slide downhill rapidly.
The rule of thumb generally says that minor water damage can be fixed and large scale water damage is more likely to cost more than the RV in some cases.

Understanding Water Damage - Wood Rot, Mold & Delamination Water Damage

Water intrusion, if not stopped, can cause wood rot damage to your RV’s roof decking and trusses; exterior fiberglass walls backed with plywood; slide out floor and walls; and interior floor decking.
Water can also cause the exterior fiberglass (filon) to delaminate from the wood (luan), and electrical
issues resulting from wire connection corrosion.

Water can cause mold & spores to grow. Mold - is a fungus with its own unique “living style”.

Mold needs 4 ingredients to grow: Food: Extracts carbon from the substrate it lives on, wood or plastic made from petroleum products.

Humidity: Comes from high moisture levels in surface layers of above the listed materials.

Oxygen: From air.

Temperatures: Mold likes moderate temperatures as we do. When mold grows toxic compounds are produced and millions of spores are released. These particles are airborne and can cause serious damage to humans!

An extended warranty is repair coverage that kicks in after the typical manufacturer bumper-to-bumper warranty has expired.

MOTOR HOME DOCTOR
DOES NOT PERFORM EXTENDED WARRANTY SERVICE
Payment is Required when Repair is completed.
How can I prevent mold from forming? 
A: Get to work right away. Even if just an inch or two of water entered an area, the potential for mold must be addressed. It only takes 48 hours for mold to germinate. Dry everything quickly. For severe moisture problems, use fans and dehumidifiers and move wet items away from walls and off floors.

FLOORS 
Q: Is it really necessary to pull out wet carpets? 
A: Yes, and as soon as possible to reduce mildew in the house. If carpet has been under contaminated floodwater, it should be discarded or steam-cleaned and dried thoroughly. Padding must be discarded. When handling or cleaning water-damaged carpet, wear rubber gloves for protection.

FLOORS
Q: Are my wood floors salvageable?
A: Wood swells when it gets wet and shrinks when it dries. Floors soaked for days will probably have to be replaced. If the water receded quickly, you may be able to replace some boards and refinish the rest. The key is getting the water out quickly.

MOLD 
Q: Can cleaning mold hurt my health? 
A: Yes. Exposure to mold can occur during the cleaning stage. Mold exposure can cause allergic reactions, asthma episodes, infections and other respiratory problems. Wear rubber gloves and a mask or respirator during the cleanup and whenever handling moldy materials. Make sure the working area is well-ventilated. Wear protective clothing that can be easily cleaned or discarded.

Ten Things You Should Know about Mold
Potential health effects and symptoms associated with mold exposures include allergic reactions, asthma and other respiratory complaints.
There is no practical way to eliminate all mold and mold spores in the indoor environment; the way to control indoor mold growth is to control moisture.

If mold is a problem in your home or school, you must clean up the mold and eliminate sources of moisture.

Fix the source of the water problem or leak to prevent mold growth.
Reduce indoor humidity (to 30-60%) to decrease mold growth by:
Venting bathrooms, dryers and other moisture-generating sources to the outside Using air conditioners and de-humidifiers Increasing ventilation
Using exhaust fans whenever cooking, dishwashing and cleaning
Clean and dry any damp or wet building materials and furnishings within 24-48 hours to prevent mold growth.

Clean mold off hard surfaces with water and detergent, and dry completely. Absorbent materials such as ceiling tiles, that are moldy, may need to be replaced.

Prevent condensation: Reduce the potential for condensation on cold surfaces (i.e., windows, piping, exterior walls, roof, or floors) by adding insulation.

In areas where there is a perpetual moisture problem, do not install carpeting (i.e., by drinking fountains, by classroom sinks, or on concrete floors with leaks or frequent condensation).

Molds can be found almost anywhere; they can grow on virtually any substance, providing moisture is present. There are molds that can grow on wood, paper, carpet, and foods.
We offer a 90 days Warranty on RV Service, 
NO WARRANTY ON ROOF PATCH OR ROOF COATINGS. Any labor involved in a warranty claim is warranted for 30 days from the date of the original Repair unless otherwise specified.

Our liability under NO circumstances will exceed the amount of the original sale

The warranty does not cover failure due to abuse, misuse, improper repairs or maintenance, improper installation, alteration or modification.
The warranty does not cover any freight charges, cost of parts removal, normal wear and tear, and consequential or subsequent damages.

The warranty will not include any claims for labor unless within the 30 day time period of the original installation.
Motor Home Doctor RV Repair Shop and Mobile RV Service
04 August 2017

Motor Home Doctor RV Repair Shop and Mobile RV Service.
 Water Damage Repair
2007 Travel Trailer has Composite Floor damage caused by leak under Bathtub/Shower. Removed Water Closet, Lavatory, Linoleum, Styrofoam Composite Floor, exposing Steel Trailer Frame Below.

So if you Purchase a Trailer that Says "Light" or "Lightweight" Most likely it will get Soft Floors due to Water Damage!

Click on Photo to View Larger Photo.
Travel Trailer has Composite Floor damage caused by leak on Roof. From the Factory it has a Styrofoam Composite Floor.
Click on Photo to view larger photo.
RV WATER DAMAGE