Storage Preparation: Cost, Hours and Process in Hacienda Heights

In most of the country storage damage is freeze damage. Here it is not. In the San Gabriel Valley the three things that ruin a stored coach are ultraviolet exposure, rodents and trapped moisture, in that order, and none of them are addressed by draining the water lines.

UV is relentless and it works on everything organic: sealant on the roof, awning fabric, tire sidewalls, exterior decals and graphics, window gaskets, and interior upholstery through the windows. A summer of unprotected storage measurably ages sealant, and it is the single largest reason coaches in this region need seal attention on a shorter interval than the manual suggests.

Rodents are the second and they are worse than owners expect. A coach is a warm dry box full of insulation and wiring, and the entry points are the ones the factory left: the wet bay penetrations, the plumbing chases, the furnace and water heater compartments, and the underside where the coroplast has torn. Rodent damage to a 12 volt harness is a genuinely expensive repair, and it is preventable with an afternoon of exclusion work.

Water is handled according to where the coach is going. In the valley, drained and left dry is usually sufficient. At elevation, the coach is winterized properly. Either way tanks are dumped and rinsed, the water heater is drained, traps are handled, and the fresh tank is left dry rather than full, because a full tank in storage is a biofilm farm and 400 pounds of dead weight on the suspension.

Batteries are the item most owners get wrong. A bank left connected discharges through parasitic loads and sulfates, which is what kills stored batteries. Depending on the coach and whether power is available at the storage site, we either disconnect and remove the bank, or set up a maintainer, and we document which so the spring startup matches. LP is turned off at the tank and the regulator protected.

Then the physical work: slides left in the position that does not set the seals, seals treated, awnings stowed dry and inspected, vent covers fitted, every rodent entry point identified and excluded with hardware cloth and sealant rather than with steel wool that rusts, desiccant placed inside, interior soft goods positioned away from direct sun where possible, and tires protected from UV. We also do a final seal and roof condition check, because storage is exactly when a marginal sealant bead becomes a leak with nobody watching.

• Tanks dumped and rinsed, water heater drained, fresh tank left dry
• Winterization where the storage site is at elevation, drained and dry where it is not
• Battery bank removed or placed on a maintainer, with the choice documented
• LP shut at the tank, regulator and lock off protected
• Rodent entry points excluded with hardware cloth and sealant
• Vent covers fitted, desiccant placed, interior positioned to limit sun exposure
• Slides positioned to avoid setting the seals, seals treated
• Awning stowed dry and inspected, tires shielded from UV
• Final roof and seal condition check before the coach goes away

Owners ask whether a cover is worth it and the answer is yes with a caveat. A quality breathable cover meaningfully extends the life of sealant, decals, gaskets and tires in this climate, and it is the cheapest protection available for a coach stored in the open.

The caveat is that a cheap non breathable cover is worse than no cover. It traps moisture against the coach, it abrades the finish everywhere it contacts a hard edge, and it flogs in wind until it wears through the clear coat on the corners. If you are going to cover a coach, the cover has to breathe and it has to be padded at every contact point.

Covered storage under a structure is better than any cover and it is the single best thing an owner in this region can do for a coach. Where that is not available, a good cover plus a seal survey every six months is the practical substitute, and it is considerably cheaper than the roof work that follows neglecting both.