The Best Grill Covers of 2026: Tested by Brand, Size, and Material

For most cooks, the Classic Accessories Veranda Series at $45–$75 is the right pick — heavy 600-denier polyester, PVC waterproof backing, lifetime fabric warranty, and built-in air vents that prevent mold. For Weber owners, the OEM Weber Premium Cover is the safe pick at the price premium because it's pre-cut to specific Weber models. For Blackstone griddles, only the OEM Blackstone cover accounts for the front grease cup correctly.

Measure your grill: width (handle to handle, including side shelves), depth (front to back including any rear shelf), and height (ground to top of lid handle). Add 2–4 inches in every dimension for an easy on-and-off fit. A too-snug cover won't go over the side handles and won't cinch shut. The sizing chart on this page lists the right cover dimensions for every common grill model.

If you own a Weber and want zero size guesswork, yes — the OEM Weber Premium Cover is pre-cut to your exact model and includes a 5-year warranty. If you're cost-sensitive and willing to measure, Classic Accessories Veranda in the right size is roughly half the price and lasts longer (lifetime fabric warranty vs 5 years). The Weber-branded resale value matters if you plan to sell the grill in the next few years.

Quality 600-denier polyester covers (Classic Accessories, Weber OEM, Grillman) last 3–5 years with year-round outdoor exposure. Heavy canvas covers last 7–10 years with occasional re-waxing. Cheap vinyl covers last 1–2 years before cracking. Indoor storage between cooks doubles all of these lifespans because UV exposure is the single biggest aging factor.

600-denier polyester with a PVC waterproof backing is the right answer for 90% of buyers — lightweight, waterproof, UV-resistant, easy to clean, affordable. Heavy canvas (with wax treatment) is the premium upgrade and lasts longer but costs 2–3× as much. Vinyl-only covers are the wrong answer — they crack in cold weather, don't breathe, and tear at the seams within a year or two.

Yes, if your grill lives outdoors. "Water-resistant" means light rain rolls off; "waterproof" means heavy rain doesn't penetrate. PVC backing or polyurethane coating is what makes a cover truly waterproof. Without waterproof backing, the cover absorbs rainwater, holds it against the grill, and accelerates rust. The waterproof rating is the single most important spec on a cover.

Yes, dramatically. Stainless steel still pits and rusts under prolonged moisture and UV exposure. Painted steel rusts faster. A waterproof cover with strap closure cuts rust formation by roughly 80% over a 5-year horizon. Combined with covering the grill while still cool (not hot), a quality cover extends grill life by 3–5 years on average.

Yes — that's what waterproof covers are designed for. Make sure the cover has air vents or a breathable fabric layer so moisture inside the grill (from cooking residue) can escape. Sealed-vinyl covers without vents trap humidity and grow mold. Quality polyester-PVC covers like Classic Accessories Veranda have built-in air vents specifically for this reason.

Three things prevent mold: built-in air vents (Classic Accessories Veranda has these; many OEM covers do not), letting the grill cool fully before covering (3+ hours after cooking), and removing the cover periodically on dry days for airflow. If mold appears, wash the cover with mild soap and water, dry completely in sun, then reinstall.

Partially. Covers reduce — but don't eliminate — spider activity in burner tubes. A cover keeps spiders off the cookbox surface, but the venturi tube openings (inside the cookbox) are still accessible from below. The single best prevention is a cover during the off-season plus annual burner-tube cleaning at the start of grilling season.

Yes, if you size correctly. Universal covers from Classic Accessories, Unicook, and Grillman fit a huge range of grills as long as you measure first and size up by 2–4 inches. The downside vs OEM: less precise fit, no brand-specific cutouts (e.g., Blackstone's front grease cup), and no guarantee of identical color match. For Weber, Traeger, and Blackstone, OEM has real fit advantages. For Char-Broil, Pit Boss, and most other brands, universal beats OEM.

Lay the cover flat on a driveway or lawn. Spray with mild dish soap and warm water. Scrub with a soft brush. Rinse thoroughly with a garden hose. Air dry completely (in sun, ideally) before reinstalling. Don't put cover in a washing machine or dryer — agitation and heat damage the PVC backing. Don't use bleach or abrasive cleaners.

Three reasons: no strap closure, weak strap clips, or the cover is too loose. Quality covers have click-close straps or cinch cords that wrap the grill base. If your current cover doesn't, replace it — wind events will eventually rip a strapless cover, expose your grill to weather, or carry the cover into a neighbor's yard. The Classic Accessories Veranda interlocking strap and Grillman wrap-around system are wind-rated to 30+ mph.

Better in some ways, worse in others. Canvas lasts longer (7–10 years vs 3–5 for polyester), naturally breathes (no mold), and looks more premium. Polyester is lighter, easier to clean, more affordable, and waterproof out of the box (canvas needs wax). For most buyers, polyester with PVC backing is the right call. Canvas is the upgrade for owners who want a high-end aesthetic and don't mind occasional re-waxing.

No — tarps don't have shaped fit, don't have strap closures, don't have air vents, and don't drape correctly. Result: water pools in folds, mold grows under the trapped moisture, and the tarp blows off in wind. The savings vs a $30 Unicook cover aren't worth the grill damage. Buy a real grill cover.

When the cover shows visible cracks, chalky white fading (UV damage that compromises waterproofing), permanent mold staining, or torn/stretched straps. Quality polyester covers typically reach this point at 3–5 years of year-round use. Indoor storage between cooks doubles cover life. If your cover still looks and feels intact at year 5, no need to replace just for the sake of it.

Yes, but a lighter-weight cover is fine. Covered patios block direct rain and most UV but don't block humidity, dust, pollen, insects, or splashed water. A standard polyester cover (not heavy-duty) extends grill life and keeps the cooking surface clean. Skip the heavy-duty Grillman premium pick — Unicook or Classic Accessories standard tier is enough.

Trapped moisture. Most mold appears when a cover goes on a still-warm grill (steam condenses inside) or stays on through long humid weather without ventilation. Three preventions: let the grill cool fully before covering, choose a cover with built-in air vents, and remove the cover periodically on dry days. Vinyl covers without breathability are mold magnets — avoid.

Yes, with a heavy-duty cover. Standard polyester-PVC covers handle light snow and rain. For heavy snow loads, choose a thicker fabric (Grillman Premium or Classic Accessories Veranda heavy-duty tier) and brush snow off after major storms — accumulated weight stretches the cover and can crack a lid latch over time. Vinyl covers crack in freezing temperatures — don't use them in winter climates.

OEM Weber covers are pre-cut to specific Weber models with glove-tight fit and 5-year warranty, but cost $80–$130. Aftermarket covers (Classic Accessories, Unicook) are sized in standard widths (58", 64", 70", etc.), require you to measure, and run $25–$60. For Spirit, Genesis, and Summit owners, OEM is the safe pick. For cost-sensitive buyers willing to measure, the right Classic Accessories Veranda size lasts longer than OEM at half the price.