Thinking about protecting your RV from the elements? A high-quality RV cover is your best defense against sun, rain, snow, and dirt. But getting the right fit is crucial. A cover that’s too small won’t offer full protection, and one that’s too large can flap in the wind, causing damage to both the cover and your RV’s finish.
Many RV owners wonder, “How exactly do I get those measurements right?” It might seem straightforward, but there are critical details often overlooked that can lead to a frustrating purchase. Don’t worry, we’ve got you covered – pun intended!
This guide from FatBoysOffroad will walk you through exactly how to measure for an RV cover, ensuring you get a snug, protective fit that keeps your home-on-wheels in top condition for years to come. We’ll cover everything from the right tools to those tricky protrusions, making the process simple and stress-free.
Why a Proper RV Cover Measurement Matters for Longevity
Investing in an RV is a big deal. Protecting that investment should be a priority. A properly fitted RV cover is more than just a sheet; it’s a shield.
It guards against UV damage, moisture, and debris. An ill-fitting cover, however, can actually do more harm than good, leading to costly repairs down the line.
Protecting Your Investment
A cover that fits correctly ensures all surfaces are shielded. This includes the roof, sides, and even tires. UV rays can degrade seals and paint, leading to cracks and fading.
Moisture can seep into tiny crevices, causing mold or water damage. A good cover keeps these threats at bay.
Avoiding Common Cover Damage
Covers that are too loose will flap incessantly in the wind. This constant movement causes friction. Friction can chafe your RV’s paint and wear holes in the cover material itself.
A cover that’s too tight can be impossible to install. It also puts undue stress on seams, leading to rips and tears. Accurate measurements prevent these common pitfalls.
Gathering Your Gear: Tools for Accurate Measurement
Before you climb up or around your RV, gather everything you’ll need. Proper preparation makes the job safer and more accurate. Think of it like prepping for any DIY project – having the right tools makes all the difference.
Essential Measuring Tools
You’ll definitely need a long, sturdy tape measure. A metal tape measure, at least 25-30 feet long, is ideal. Fabric tapes can stretch and give inaccurate readings.
Consider a second person to help hold the end of the tape. This is especially useful for longer RVs. A pen and paper or a smartphone for notes are also critical.
Safety First: Working Around Your RV
Safety is paramount when working at heights or around large vehicles. Use a stable, secure ladder if you need to reach the roof. Never stand on unstable objects.
Wear appropriate footwear with good grip. If you’re not comfortable on a ladder, ask a friend for help or consider professional assistance. Always be aware of your surroundings and any overhead obstacles.
How to Measure for an RV Cover: Step-by-Step
This is where the rubber meets the road. Following these steps carefully will ensure you get the precise dimensions needed for a perfect RV cover fit. Don’t rush this process; accuracy is key.
Step 1: Parking and Preparation
Park your RV on a level surface. Ensure all slide-outs are retracted. Close all windows and doors securely.
Retract your awning completely. This gives you the most compact, accurate shape to measure. Clear any debris from the roof.
Step 2: Measuring Overall Length
Measure your RV from the longest point at the front to the longest point at the rear. This includes bumpers, spare tires, and ladders. Do not include the hitch if it’s a travel trailer.
Start at the very front of the RV body. Extend the tape measure all the way to the very back. For a fifth wheel, measure from the pin box to the rear.
- Stand at the front of your RV.
- Hook your tape measure onto the furthest point forward (e.g., front bumper or cap).
- Walk to the rear, keeping the tape taut.
- Measure to the furthest point backward (e.g., rear bumper, ladder, or spare tire).
- Record this exact measurement.
Step 3: Determining Overall Height
Measure the height from the bottom of the chassis (where the tires meet the ground) to the tallest point on the roof. This is crucial for clearing roof-mounted accessories. Do not measure from the top of the tires.
This measurement must include your air conditioning units. It also needs to include satellite dishes or roof vents. Use your ladder to safely access the roof for this measurement.
- Stand on a level surface next to your RV.
- Place the end of your tape measure on the ground, directly under the tallest point.
- Extend the tape straight up to the top of the highest accessory (e.g., AC unit).
- Ensure the tape is vertical for an accurate reading.
- Note down this overall height.
Step 4: Accounting for Width
While many RV covers are designed with a standard width range, it’s still good to know your RV’s exact width. Measure from the widest point on one side to the widest point on the other. This usually includes the main body, not mirrors.
If you have wide awnings or other features that permanently protrude, include them. However, most covers accommodate standard RV widths easily. Focus primarily on length and height for a snug fit.
Step 5: Don’t Forget Protrusions and Accessories
This is a common area for mistakes when you measure for an RV cover. Your RV isn’t a perfect rectangle. It has many features that stick out. These need to be accounted for in your measurements or the cover won’t fit.
- Air Conditioners: Always measure to the top of your highest AC unit.
- Ladders: If mounted on the rear, include its length in your overall length measurement.
- Spare Tires: Often mounted on the rear bumper, add its depth to your length.
- Roof Vents/Antennas: Ensure your height measurement clears these.
- Awnings: Retract them fully. If they are fixed and protrude significantly, measure to their outermost edge.
Many cover manufacturers will specify a height range that accounts for standard roof accessories. However, if you have unusually tall or numerous items, double-check.
Understanding RV Cover Sizing Charts and Types
Once you have your precise measurements, it’s time to compare them against manufacturer sizing charts. This is a critical step to ensure you select the correct cover. Don’t just guess; consult the charts.
Deciphering Manufacturer Sizing
RV cover manufacturers provide sizing charts. These charts typically list covers by length ranges (e.g., 20-22 ft, 24-27 ft). Find the range that perfectly encompasses your RV’s overall length. If your RV’s length falls between two sizes, it’s often better to go with the slightly larger option.
However, always check the height specification too. Some covers have specific height limits. Ensure your overall height, including AC units, fits within the cover’s stated maximum height.
Different RV Cover Styles and Materials
RV covers come in various styles and materials. You’ll find covers specifically designed for Class A, Class C, travel trailers, fifth wheels, and even toy haulers. Each type is tailored to the RV’s unique shape.
Materials vary from breathable polypropylene for moderate climates to heavy-duty, multi-layer fabrics for harsh winter protection. Consider your climate and storage conditions. A breathable cover helps prevent mold and mildew in humid areas.
Common Measurement Mistakes to Avoid
Even experienced DIYers can make simple errors. Being aware of these common pitfalls will help you get it right the first time. Double-checking your work is always a good idea.
Guessing Your RV’s Dimensions
Never rely on the manufacturer’s listed length for your RV. That measurement often refers to the living space or body length. It rarely includes bumpers, ladders, or other external accessories. Always take your own measurements.
A difference of even a few inches can impact the fit. An accurate measurement is the foundation of a successful cover purchase. Take the time to measure precisely.
Ignoring Roof-Mounted Accessories
This is perhaps the most frequent mistake. Forgetting to include your AC unit, satellite dish, or roof vents in your height measurement is a recipe for disaster. The cover won’t sit properly.
It might stretch too tightly over these points, leading to premature wear or tearing. Always measure to the absolute highest point. This ensures adequate clearance for all roof-mounted gear.
Not Double-Checking Your Work
You’ve taken all the measurements, but are they right? It’s always a good idea to measure twice, especially for length and height. Get a friend to help you verify.
Compare your measurements against the RV’s specifications, noting any differences. If there’s a significant discrepancy, re-measure. Accuracy prevents frustration later.
Expert Tips for a Snug Fit and Easy Installation
Once you’ve nailed down your measurements and picked the perfect cover, a few extra tips can make the installation process smoother and ensure the cover lasts longer. Think like a seasoned off-roader: prepare for anything.
When in Doubt, Round Up (Slightly)
If your RV’s length falls right on the cusp of two cover sizes (e.g., 26 feet, and the sizes are 24-26 feet and 26-28 feet), opt for the larger size. A slightly larger cover offers a bit more wiggle room. This helps prevent overstretching and premature wear.
Too tight a cover is much worse than one that’s a touch loose. You can always use cinch straps to snug up a slightly larger cover. This provides a custom-like fit.
Consider Access Panels and Zipper Locations
Many RV covers come with zippered access panels. These are incredibly convenient for getting into your RV without removing the entire cover. Check the product description for zipper locations.
Ensure they align with your RV’s door or storage compartments. This small detail makes a big difference in convenience. You want easy access when you need it.
The Buddy System for Cover Installation
Installing a large RV cover can be a two-person job. Enlist a friend or family member to help. One person can guide the cover from one end while the other pulls it over from the opposite side.
This prevents the cover from dragging on the ground or getting snagged. It also makes maneuvering the heavy fabric much easier. Work slowly and methodically for the best results.
Frequently Asked Questions About RV Cover Measurement
We get a lot of questions about RV covers. Here are some of the most common ones we hear from fellow enthusiasts and DIY mechanics.
Can I just use my RV’s listed length?
No, absolutely not. The manufacturer’s listed length usually refers to the main body. It rarely includes crucial extensions like bumpers, ladders, or spare tires. Always take your own comprehensive measurements from the furthest point front to back.
What if my RV has a ladder or spare tire on the back?
You must include these in your overall length measurement. Measure from the very front of your RV to the absolute furthest point at the rear, whether it’s the bumper, a ladder, or a mounted spare tire. Failure to do so will result in a cover that is too short.
Should I measure with the slides in or out?
Always measure with all slide-outs retracted. RV covers are designed to fit the RV in its most compact, travel-ready state. Measuring with slides out will give an incorrect, larger dimension, leading to a cover that won’t fit when the slides are in.
How often should I replace my RV cover?
The lifespan of an RV cover varies significantly. It depends on the material quality, your local climate, and how often it’s exposed to harsh elements. A good quality, multi-layer cover might last 3-5 years or more. Inspect your cover annually for tears, thinning, or sun degradation. Replace it when it no longer offers adequate protection.
Protecting your RV is a smart move, and getting the right cover starts with accurate measurements. By following these steps and tips, you’ll be well-equipped to choose the perfect RV cover, ensuring your rig stays in pristine condition for all your adventures. Don’t cut corners on measurement; it’s the foundation of long-term protection.
Now that you know exactly how to measure for an RV cover, you can confidently shop for the ideal shield for your home-on-wheels. Take your time, measure carefully, and your RV will thank you for years to come. Stay safe and stay comfortable out there!
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