You spent anywhere from $80,000 to well over $300,000 on your RV motorhome, so protecting that investment should be at the top of your priority list. Yet thousands of RV owners make the costly mistake...
You spent anywhere from $80,000 to well over $300,000 on your RV motorhome, so protecting that investment should be at the top of your priority list. Yet thousands of RV owners make the costly mistake of leaving their vehicles exposed to the elements year-round, watching their prized possession slowly deteriorate from sun damage, hail, bird droppings, and harsh weather conditions. The good news is that a quality carport can shield your RV motorhome from these threats without breaking the bank. Whether you are a first-time RV owner or someone who has recently decided to take storage more seriously, understanding your carport options is essential knowledge. In this guide, we will walk you through everything a beginner needs to know about RV motorhome carports. You will discover the key factors to consider before purchasing, the most popular styles and materials available, and the practical tips that experienced RV owners wish they had known from day one. By the end, you will have the confidence to make a smart, informed decision that keeps your investment protected for years to come. Why Protecting Your RV Motorhome Is a Financial No-Brainer Your RV motorhome is almost certainly one of the most valuable assets you own outside of your home. According to J.D. Power's RV market data , Class A motorhomes averaged approximately $215,325 in value during the March to April 2025 period, while Class C motorhomes averaged $123,208 during the same window before settling at $115,650 by year-end. Those are six-figure assets sitting in your driveway, fully exposed to whatever weather rolls through. With elevated fuel costs in 2026 encouraging owners to hold their vehicles longer rather than trade up, the financial stakes of proper protection have never been higher. Every additional year you keep your motorhome means one more year of cumulative exposure to the four primary threats: UV degradation, oxidation, moisture intrusion, and storm debris. These forces do not announce themselves. They work slowly, bleaching your roof, corroding your seams, warping your seals, and compromising the structural components that make your rig roadworthy and resalable. The solution is straightforward. A steel RV carport from Cardinal Carports costs a fraction of your vehicle's replacement value, making it one of the clearest ROI investments available to any motorhome owner. You can also review current RV values by segment to see exactly how much asset value you are protecting. Shelter is not an expense; it is insurance against the slow damage no policy covers. Class A vs. Class C vs. Travel Trailer: RV Carport Sizing by Vehicle Type Not all RV motorhomes and trailers share the same footprint, and selecting the wrong carport size is one of the most expensive mistakes a first-time buyer can make. Understanding how your specific vehicle class translates into real structural requirements will save you from ordering a shelter that is too short, too narrow, or too shallow to do its job properly. 1. Class A Motorhomes: Plan for Maximum Clearance Class A motorhomes are the largest production RVs on the road, typically ranging from 26 to 45 feet in length and 8 to 8.5 feet in width. What catches many buyers off guard is total height. With rooftop AC units, vents, and satellite dishes factored in, overall height can reach 13 feet or more, which means a minimum carport clearance of 14 feet is the widely recommended standard for safe, comfortable entry and exit. Real-world owners in Class A diesel communities often push that recommendation to 15 feet for added peace of mind, particularly for longer coach configurations. If you are protecting a vehicle averaging over $207,000 in current market value, undershooting clearance by even a few inches is a risk simply not worth taking. 2. Class C Motorhomes: Account for the Over-Cab Overhang Class C motorhomes generally run 20 to 33 feet in length with a width profile similar to Class A units at around 8 feet. The defining structural feature of any Class C is the over-cab sleeping area that extends above the cab of the chassis. This distinctive design element commonly pushes total vehicle height to 11 to 12 feet, and the RV carport height guide from American Steel Inc. cites a 13-foot minimum clearance as the accepted baseline for this vehicle class. When ordering your carport, always reference the over-cab height on your specific model, not just the listed body height, since manufacturer spec sheets do not always account for rooftop accessories. 3. Travel Trailers: Measure First, Order Second Travel trailers represent the widest dimensional range of any RV category, with common lengths spanning 18 to 35 feet and roof heights falling anywhere between 10 and 13 feet depending on model and configuration. Because slide-outs, rooftop AC units, and raised ceilings vary so significantly across makes and models, no single standard dimension applies universally. The most important step any travel trailer owner can take is to measure their specific unit for a carport with all slides fully retracted before placing an order. Also account for tongue length on the hitch end, which adds to your total required carport length and is frequently overlooked in initial measurements. 4. Side Height: The Overlooked Specification That Matters Peak clearance typically dominates the sizing conversation, but side height, sometimes called eave height or leg height, is equally important and far more often underestimated. A taller side height keeps wind-driven rain, debris, and UV exposure off more of the vehicle's sidewalls, and it provides practical working clearance for opening entry doors, accessing storage bays, and performing basic maintenance. At Cardinal Carports, a 6-foot minimum side height is the standard starting point , providing meaningful protection and clearance right out of the gate. This extra foot makes a real, tangible difference for RV owners in daily use. 5. Width Selection: Think Beyond the RV Body RV body width alone sits at approximately 8 to 8.5 feet, but deployed slide-outs can extend 2 to 4 feet per side, and awnings can reach 8 to 10 feet in extension. For Class A and Class C owners who also need to store a tow vehicle or truck alongside the motorhome, a 20- to 24-foot wide structure is the practical recommendation for dual-purpose coverage. One Class A owner community discussion noted that a 12-foot-wide structure barely allowed the entry door to fully open, reinforcing that width planning for a diesel Class A carport should always err on the generous side. When in doubt, size up on width; the added coverage is far less costly than rebuilding later. Why Metal Carports Are the Proven Standard for RV Protection When it comes to sheltering a high-value RV motorhome, the material you build with determines everything. Steel carport kits consistently outperform wood and fabric alternatives across load-bearing capacity, wind resistance, snow code compliance, and expected service life. Wood rots, warps, and attracts termites. Fabric shelters tear under sustained wind pressure and degrade rapidly under UV exposure. High-grade steel framing simply holds its shape through conditions that would compromise every lighter alternative, making it the logical choice for protecting an asset worth $100,000 or more. Galvanized Steel: Built-In Corrosion Resistance Cardinal Carports uses galvanized tubular steel framing as its construction standard, and the science behind this choice matters. Galvanized steel undergoes hot-dip galvanization , where a metallurgical zinc bond forms a multi-layered protective coating over the steel substrate. This zinc layer acts as a sacrificial shield; even if the surface is scratched, the zinc corrodes preferentially before the steel beneath is ever affected. In humid climates, coastal regions, and areas with frequent rain, this self-protecting mechanism extends the structural lifespan significantly without requiring annual painting or…