RV Water Leaks
By Mark Polk
If there is a way to get in your RV, water will find it. Water leaks on an RV can cause extensive damage
and can be extremely costly to repair. When I worked at an RV dealership I saw the damaging effects that water can
cause to an RV time and time again. I learned the lesson the hard way. I appraised a unit that was being traded in
and didn’t identify the extensive water damage, which resulted in a thousand dollars worth of repairs. Hindsight is
20/20 and I quickly learned how to inspect for, and identify potential water damage on RVs. My recommendation is
that you inspect for potential water leaks twice a year at a minimum, once in the fall and again in the spring.
Every seam on your RV and anywhere the manufacturer cut a hole in your RV has the potential to allow water in.
To protect your investment and your wallet take the time to REALLY inspect all of these seams and sealants. Water
damage on an RV is similar to progressive damage to a tire. The outside of the tire looks fine, but the internal
damage over a long period of time causes the tire to fail without any warning. The outside of your RV looks fine
but the internal damage caused by water over a long period of time can result in the entire roof, floor or wall
rotting away without you knowing it. Here are a few things to look for during your inspections.
Always keep safety on your mind when you are working on the roof of your RV You can be seriously injured from a
fall! A reader of mine suggested that you use 2 pieces of 1/2" plywood, 2 foot by 4 foot, to move around on and
spread your weight out over the roof rafters.
* To stop a leak before it starts, thoroughly inspect all roof and body seams. Consult with your RV dealer for
sealants compatible with different types of roofing materials.
* Look for any discoloration and feel for any soft spots on the ceiling around roof vents, air conditioners, TV
antennas, plumbing vents, and any other openings that were cut in the roof.
* Look for any discoloration or wrinkles in the wallpaper, and feel for any soft spots on the walls around all
windows, doors, vents, slide outs, or any other openings that were cut in the side walls.
* Identify the location of items like the water heater, furnace, outside shower, potable water fill and city
water inlet on the outside of the RV and then access those areas from the inside of the RV and look for any
indications of water damage around these openings.
* Open all overhead cabinets and look in the top corner where the walls meet the ceiling for any discoloration
or feel for any soft spots. This would indicate a leak at the seam where the sidewall and the roof attach.
* Check in all outside storage compartments for any indications of water leaks or water damage.
* Check for any soft spots on the roof itself especially around the roof seams at the front and rear of the RV.
Thoroughly inspect all sealants on the roof around every opening.
* Some Class C motor homes are notorious for leaks in the cab over bed area. Look for any signs of discoloration
and feel for soft spots. Reach under the mattress and feel for water.
* Look and feel on the outside of the RV for any signs of delaminating. Delaminating is caused by water getting
between the exterior fiberglass and the sidewall. When this happens the exterior fiberglass separates from the
sidewall of the RV. You can stand at the front or rear of the RV and look down the side for any noticeable ripples
or what looks like a bubble. You can also press on the sidewalls. If you feel the exterior fiberglass move it is
delaminating. Often times delaminating starts around where an opening that was made in the sidewall.
Don’t just inspect your RV for water damage; REALLY inspect your RV for water damage. If you do this on a
regular basis you can locate and repair the source of any water damage before it has a chance to do a great deal of
damage. I think I’ll start checking our motor home more than twice a year.
Copyright 2006 by Mark J. Polk owner of RV Education 101
RV Expert Mark Polk, seen on TV, is the producer & host of America's most highly regarded series of DVD's,
videos, books, and e-books. http://www.rveducation101.com/
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