The roof is the one component that punishes neglect quietly and expensively, well out of sight.
A roof leak on an RV rarely announces itself. Water works in at a seam or a vent gasket, runs behind interior paneling, and soaks into the plywood decking long before anything shows on the ceiling inside. By the time a stain or a soft spot is visible, the damage underneath it is usually older and larger than it looks.
Most systems on a rig fail in a way you notice immediately — the fridge stops cooling, the slide stops moving. A roof leak fails in a way that goes unnoticed for months, sometimes longer, because water travels along framing and paneling before it ever reaches a spot anyone would see. That lag is what makes the roof the highest-consequence item on the whole rig.
Utah's elevation means more direct UV exposure than sealant manufacturers generally assume in their service intervals. Rubber roof membranes and the sealant around vents and edge trim dry out and crack faster here than at lower elevation, which is exactly why a schedule based on a generic timeline undersells how often it actually needs checking.
Almost never in the middle of a flat membrane. They start at penetrations — vents, air conditioner housings, antenna mounts, edge trim — anywhere the membrane is interrupted and sealed rather than continuous. Those are the points worth checking first, every time.
Delamination is what happens once water has been getting into the roof structure long enough to separate the layers underneath the membrane — the decking, the insulation, the interior ceiling panel. At that point resealing the surface does nothing for what has already happened underneath, and the repair becomes structural rather than cosmetic.
At least once a season is a reasonable baseline in Utah, and twice — before and after the heaviest sun exposure of summer — is better for a rig that gets used hard or sits outside uncovered. A rig in covered storage can generally go longer between checks than one parked in direct sun year-round.
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