If you own an 18 ft enclosed trailer, you need a cover that fits snugly, blocks UV, and withstands wind and rain. This guide highlights five top trailer covers designed for 18–20 ft trailers, explaining who they’re best for and why. Whether you’re storing a horse trailer, an RV, or a utility trailer, the right cover minimizes wear, protects finishes, and extends service life. The buyer table below helps compare key features at a glance.
| Product | Best For | Key Benefit |
|---|---|---|
| GEARFLAG V-Nose Enclosed Unitlity Trailer Cover | Heavy weather storage | 5-layer top panel, windproof straps |
| WIWIDRM 7-Layer Heavy Duty Cover | All-season outdoor use | 4 air vents, reinforced edges |
| Umbrauto Travel Trailer RV Cover 18’–20′ | Long storage with extras | 9-ply roof, 6 wind straps |
| Umbrauto Travel Trailer RV Cover 16’–18′ | Compact 16–18 ft needs | Full accessory set, strong wind protection |
| DenForste RV Cover 18–20ft | Heavy-duty protection | 8-layer anti-UV, six vents |
GEARFLAG V-Nose Enclosed Utility Trailer Cover
Best for heavy weather storage, this five-layer top-panel cover is designed to resist rain, snow, and wind. Reinforced windproof side-straps and durable stitching reduce edge stress and tearing. The elastic hem helps secure corners for a snug fit. It folds into a storage pouch for compact keeping when not in use. Choose this if you want robust, all-season protection and easy storage.
Limitations: While highly wind-resistant, user installation quality and proper sizing are crucial to prevent sagging in extreme conditions.
WIWIDRM Horse Trailer Cover 16’1″–18′
Best for all-season outdoor protection. The seven-layer fabric includes a thick top panel and side panels to shield from rain, sun, wind, and dust. Four air vents promote airflow to reduce trapped moisture, and the windproof strap system minimizes billowing. Reinforced edges resist tearing at corners and trailer contact points. Pick this if you need a sturdy option for long outdoor storage.
Caution: The large size requires careful alignment during installation to avoid wind lift in exposed locations.
Umbrauto RV Cover 18′–20′
Best for comprehensive all-weather protection with a complete accessory set. The nine-layer roof and three-layer side fabric offer strong UV resistance and tear strength. Included components—tongue jack cover, gutter covers, storage bag, and more—make this a convenient all-in-one solution for long-term storage. Choose this if you value a ready-to-use package with added protection features.
Limitation: Heavier fabric may require more effort during installation, especially for first-time users.
Umbrauto RV Cover 16’–18′
Best for compact 16–18 ft trailers needing solid wind and weather protection. This package mirrors the 18–20 ft model with a complete set of accessories, a nine-layer roof, and stable wind resistance. It’s ideal for owners who have smaller trailers but still want premium protection and ease of setup.
Advice: Ensure the five-layer design isn’t overmatched by unusually large trailers at max length.
GarveeTech RV Cover 18–20 ft
Best for tear-resistance and long life. This four-layer heavy-duty cover uses upgraded non-woven fabric with UV protection and a reinforced thickness to withstand rain and UV exposure. Two ultra-long straps deliver windproof stability, while elastic hems and adjustable panels ensure a snug fit. It is suitable for RVs exposed to varied climates. A good pick when you want durable materials at a reasonable price point.
Warning: The heavier material may require a robust setup routine; ensure straps are fully tightened to avoid wind-induced movement.
Buying Guide: Key Considerations For 18 Ft Trailer Covers
- Size and fit: Measure length, width, and height to choose the correct range (18–20 ft is common). A snug fit reduces wind lift and moisture intrusion.
- Material and layers: Higher-layer covers (7–9 layers) offer better UV, water, and tear resistance but can be heavier and harder to install. Balance durability with ease of use.
- Windproof features: Look for bottom straps, elastic hems, and reinforced edges. Multiple attachment points improve stability in windy locations.
- Ventilation: Sufficient air vents prevent moisture buildup and mold, while still protecting from rain and debris.
- Accessories: A complete set (tongue jack cover, gutter covers, storage bag, and ropes) adds value and simplifies installation.
- Storage and maintenance: Consider ease of folding, pouch inclusion, and how the cover handles snow and ice buildup.
- Climate considerations: In sun-heavy regions, UV resistance is crucial; in coastal areas, salt and grit resistance matters.
Frequently Asked Questions
- What size should I buy for an 18 ft trailer? Answer: Choose a cover designed for 18–20 ft trailers to ensure proper clearance and wind resistance.
- Are 9-layer covers worth it? Answer: They provide enhanced durability and UV protection, beneficial for long-term outdoor storage in harsh climates.
- Do these covers require professional installation? Answer: Most can be installed by a typical homeowner, but following the included setup guide improves fit and performance.
- Will a cover protect against barn dust and rain? Answer: Yes, most covers block wind-driven water and dust, though coverage depends on fit and fabric quality.
- Should I use a cover year-round? Answer: In climates with harsh winters or heavy UV, year-round use is common; otherwise consider seasonal removal to prevent moisture buildup.
- What maintenance is needed? Answer: Check seams and straps regularly; clean with mild detergent if needed and dry completely before storage.