Buying an rv camper carport without first identifying your rig type is one of the most expensive mistakes an RV owner can make. A travel trailer sitting at 10 feet tall and a Class A diesel pusher str...
Buying an rv camper carport without first identifying your rig type is one of the most expensive mistakes an RV owner can make. A travel trailer sitting at 10 feet tall and a Class A diesel pusher stretching to 13.5 feet are not interchangeable when it comes to shelter specs, yet thousands of buyers select carports based on price or aesthetics before ever confirming whether the structure will actually clear their roof. The result is a costly re-order, a delayed build, or worse, a carport that technically fits but leaves zero margin for rooftop accessories like AC units, satellite domes, and solar panels. This guide cuts through that confusion by using rig type as the primary selection driver. You will learn why manufacturer height specs routinely undercount real-world clearance needs, what specific dimensions fifth wheels, travel trailers, and Class A motorhomes each demand, and how to apply a practical decision framework that matches carport spec to the vehicle you own today and the one you may own tomorrow. Get the spec right the first time, and your structure will perform its job for the full life of your rig. The Measurement Problem Most RV Owners Get Wrong Most RV owners open the spec sheet, find the listed height, and order a carport around that number. That approach is the single most reliable way to end up with a structure that doesn't fit. Manufacturer-stated height almost always reflects the body of the coach measured under controlled conditions. It does not include rooftop AC units, satellite domes, solar panels, or roof racks. These are permanently mounted accessories, but they are routinely excluded from the published figure. Rooftop accessories such as AC units, satellite domes, and solar panels add meaningful height above the manufacturer's stated figure, always measure to the actual highest point rather than relying on the spec sheet. On a rig listed at 12 feet 6 inches, the actual high point may be substantially higher once rooftop equipment is accounted for. If you ordered a carport based on the spec sheet alone, you risk a clearance failure before the installation crew finishes. The correct way to measure is straightforward: use a tape measure from flat, level ground to the highest fixed point on the roof, including every accessory that stays mounted year-round. Do this with the rig parked on the flattest surface you have. A slight slope in your driveway tilts the rig enough to distort the reading. Once you have that true high-point measurement, as a working rule, many RV owners add at least 12 inches above their measured high point before specifying side height, to account for uneven ground at the installation site, any future accessory additions, and normal variation in how a loaded rig sits versus an empty one. Width calculations carry a separate problem that most generic guides skip entirely. If a tow truck or toad vehicle will be parked alongside the RV, or stored within the same structure, those vehicles must be measured and added to the total width spec. The rig width printed on a spec sheet covers the coach only, not the truck cab beside it or the dinghy vehicle next to it. Measure everything that will occupy the footprint, then plan for enough clearance on each side to move comfortably around the rig, a common rule of thumb is at least 24 inches per side. Ordering from unadjusted manufacturer specs is a frequent source of clearance failures. The fix is inexpensive: measure the actual high point, measure everything sharing the structure, then build in the clearance buffer before placing the order. With those measurement principles in hand, each rig type introduces its own specific challenges. Travel Trailer Carport Requirements That measurement gap matters most with travel trailers, because no other RV class covers as wide a height range. A compact teardrop sits around 9 feet tall; a large bunkhouse trailer can push 13 feet. Those two rigs cannot share a carport spec, and treating "travel trailer" as a single category is how owners end up with a structure that clears one unit by inches and won't fit the next. Width variability follows the same pattern. Width varies considerably across the travel trailer class, measure your specific unit, including slide-outs in the extended position, before specifying carport width. Recommended Footprint for Mid-to-Large Travel Trailers Real-world sizing from the RV ownership community points to a 35-foot-long by 25-foot-wide by 13-foot-tall footprint as a practical minimum for mid-to-large travel trailers. The 13-foot height is not just sized for the current rig; it's designed to absorb a future upgrade without requiring a new structure. Owners of smaller units today should still consider this benchmark seriously if an upgrade is likely within a few years. Open-Sided vs. Enclosed: Storage Duration Changes Everything How long and where you store the trailer determines which carport style earns its cost. An open-sided lean-to works for mild climates with short storage windows. For owners parking through harsh winters or high-UV summer climates, an enclosed or partially enclosed metal camper carport delivers meaningfully better protection against moisture intrusion, UV degradation, and debris accumulation. A travel trailer sitting under open sun in a southern climate for six months accumulates damage that a roofed steel structure prevents entirely. Build for the Rig You'll Own, Not Just the One You Have Travel trailer owners who plan to upgrade within five to seven years face a straightforward math problem: sizing up at the time of the initial order adds a modest cost, while retrofitting or replacing an undersized structure later costs substantially more. A carport built around a 10-foot-tall travel trailer will not accommodate a 13-foot fifth wheel without significant rework. Sizing for the next rig now is always the better financial decision. On side height specifically, Cardinal Carports offers custom side heights to match your rig's actual clearance requirements, contact the team for a quote sized to your measured height. Travel trailer applications typically need custom side heights in the 12-to-14-foot range to clear the rig with proper buffer and accommodate roof-mounted accessories. That customization is available, and getting it right at the order stage is far less expensive than correcting it after installation. 5th Wheel Carport Requirements Fifth wheels introduce a clearance challenge that travel trailers don't share: the coach body height and the effective entry height are two different numbers, and confusing them is an expensive mistake. The King Pin Box Problem Fifth wheels fall in the 12 to 13.5-foot height range , identical to Class A motorhomes on paper. The difference is what happens at the front of the trailer. The raised front section that sits over the truck bed, including the king pin box and hitch hardware, creates a localized high point that sits above the main coach roofline. This projection can clear the top of the truck cab by only inches, and it determines your true minimum entry height, not the sticker on the trailer door frame. Measure from the ground to the top of the king pin box while the trailer is hitched and level. That number is your carport clearance floor. Measure that point independently and add clearance above it, that single step prevents the most common clearance failure specific to fifth wheel owners. Width: The Truck Changes Everything A full-size crew cab paired with a wide-body fifth wheel creates a combined footprint that standard-width carport specs routinely undercount. Sizing a metal rv carport to the trailer width alone guarantees a cramped, hazardous storage bay. Real-World Dimensions for Full-Size Fifth Wheels Community experience from owners of 40-foot fifth wheels consistently points to a 25-foot-wide by 45-foot-long by 13-foot-tall structure as a practical minimum for comfortable storage. Standard catalog carports rarely list…