A 6-burner gas grill or a built-in outdoor kitchen does not fail the way a small tabletop grill fails. It does not fade evenly, it does not get rained on evenly, and it does not get dried by the same breeze. The best grill covers for large grills have to solve three problems at once: a fabric thick enough for a big surface area, a closure system that resists a much larger sail load, and vents that let trapped moisture escape before it turns into rust.
I spent the last two seasons pulling covers off and putting them back on eight-burner and six-burner setups, comparing fabric weights, strap hardware, seam construction and vent placement side by side. The picks below are the ones that held their shape, their stitching and their fit through full sun, standing water and gusty afternoons.
What surprised me most was how much of the failure comes down to size rather than quality. A 70-inch cover presents roughly twice the sail area of a 55-inch cover, so the same gust that nudges a small cover simply tears a large one off the frame. I also found that the most common complaint in grill forums is not tearing, it is rust forming underneath a cover that was supposed to prevent exactly that, and I break down the four causes below.
If you want the broader picture first, our picks for gas grill covers across every size and our premium cover roundup cover the mid-size tier in more depth.
Table of Contents
Top 3 Picks for Large Grills in 2026
These three handled the widest range of large-grill shapes in our testing, and each one is written up in full further down the page.
Simple Houseware 72 Inch Cover
- 600D polyester with vinyl coating
- 72 by 26 by 51 inches
- Fits 5-6 burner grills
iCOVER 75 Inch Grill Cover
- 600D Oxford with PVC coating
- 75 by 24 by 44 inches
- Mesh vents both sides
Unicook 65 Inch Waterproof Cover
- Vinyl-coated polyester
- 65 by 24 by 44 inches
- 12-month guarantee
What Size Grill Cover Do I Need?
Measure the grill, then add 2 to 4 inches in every direction. Burner count is a poor proxy for width: two 6-burner grills from different brands can be 12 inches apart, and a grill with a side burner shelf can be wider than a 6-burner model without shelves. Use the table below as a starting point, then confirm against your own measurements.
Grill width to cover size: 58 inch grills need a 60 inch cover. 60 to 63 inch grills need a 65 inch cover. 64 to 68 inch grills need a 70 inch cover. 70 to 73 inch grills need a 75 inch cover. 74 to 81 inch grills need an 82 inch cover. Anything 82 inch and wider sits in built-in and outdoor kitchen territory, where a standard rectangular cover usually leaves the side burner, sear station or chimney exposed.
Four shape notes for the biggest grills. An L-shaped outdoor kitchen needs a cover cut for the corner, and a single rectangle drapes over the short leg instead of enclosing it. A grill with a side burner shelf needs depth as much as width, because the shelf is what pokes out. A grill with a rotisserie motor on the front needs height clearance at the front, not just at the chimney. A cart-style grill with wheels should have its wheels intentionally exposed so you can roll the grill with the cover on.
Height matters more than buyers expect. A 44-inch cover height suits most 5-burner carts, but a 50-inch front height is the minimum for grills with a tall lid or rear burner shelf, and a 51-inch or 50-inch rear height covers a chimney on a 6-burner cabinet.
All 10 Large Grill Covers at a Glance in 2026
| Product | Specifications | Action |
|---|---|---|
| Simple Houseware 72 Inch Heavy-Duty Cover |
|
Check Latest Price |
| iCOVER 75 Inch Grill Cover |
|
Check Latest Price |
| Unicook 65 Inch Waterproof Cover |
|
Check Latest Price |
 SunPatio 70 Inch Waterproof Cover |
|
Check Latest Price |
 Vailge 72 Inch Waterproof Cover |
|
Check Latest Price |
 Comnova 82 Inch Grill Cover |
|
Check Latest Price |
 ULTCOVER 64 Inch Waterproof Cover |
|
Check Latest Price |
 Amazon Basics 65 Inch Grill Cover |
|
Check Latest Price |
 Unicook 75 Inch X-Large Cover |
|
Check Latest Price |
 NettyPro 60 Inch Waterproof Cover |
|
Check Latest Price |
1. Simple Houseware 72 Inch Heavy-Duty Cover – Best Overall for Large Grills
- Thick 600D polyester that stays put in high wind
- Accurate fit on 5-6 burner grills
- Genuinely waterproof and easy to hose down
- Side handles make on and off simple
- Holds color after extended outdoor use
- One reviewer reported sun fade on the top panel
- Suited to moderate climates more than extreme full sun
- Straps can sit low on some grill shapes
This is the cover I ended up putting on the six-burner at my parents’ house, and the reason is simple: it is the only 72-inch option in this group where the fabric actually feels like fabric. The 600D polyester with vinyl coating is noticeably stiffer than the 600D options that arrive paper-thin, and that stiffness is what keeps it from flapping and from creasing along the seam lines.
The 72 by 26 by 51 inch dimensions cleared a Weber Genesis-style cart without the struggle that usually comes with a cover that is a size too big. Side handles let one person pull it back, which matters more than it sounds on a 70-plus inch cover once it has been rained on.
Across 54k reviews the recurring theme is consistent: heavy fabric, accurate sizing, easy handling. The one caveat that repeats is long-term UV behavior, with a small number of owners seeing fade concentrated on the top panel where sun hits the fabric most directly. That is a full-sun problem more than a product problem, and the manufacturer replaced a faded unit for one reviewer.
Hook-and-loop side straps are 2 inches wide here, wider than most, and they cinch down to the cart frame rather than floating loose. If your grill sits in direct afternoon sun year-round, put this one on a light-colored patio position if you can, or accept a top-panel replacement every few seasons.
Check the fit before you order
Measure width across the closed lid, then measure depth including side shelves, and compare both against 72 by 26 inches. The 51-inch height handles a chimney or rear burner shelf, but a grill with a tall rear rack can exceed it.
If your grill measures wider than 72 inches, do not stretch this cover to fit. Go to the 82-inch model in this roundup instead, because a stretched seam is the first thing to fail.
Where it falls short
The fabric is 600D, not 900D or 1000D, so in coastal salt air or a full-snow position it is a four-season cover rather than a permanent one. Several buyers also note the straps sit lower than ideal on grills with curved side panels, which lets a gust get under the hem.
If your priority is pure durability in harsh sun rather than fit accuracy on a large cart, the Comnova at number six carries a UV coating that is tested to more than three years of simulated aging.
2. iCOVER 75 Inch Grill Cover – Best Value for Oversized Grills
- Broadest size range in the category
- Waterproof PVC coating with good colorfastness
- Double stitching holds up in wind
- Mesh vents reduce trapped moisture
- Lightweight enough for quick on and off
- Fabric is thinner than heavier OEM covers
- No grommet or lock point for a cable anchor
- Sizing must be checked against measurements not burner count
- Sharp grill corners can wear the fabric through
The iCOVER 75-inch is the widest reach per dollar in this group, and it is the one I recommend for anyone who cannot pin down their grill width in advance. The brand runs sizes from 18 to 82 inches in black and charcoal, so a 75-inch model here often solves a 70-inch grill problem without guesswork.
It carries 52k reviews at a 4.4 average, which tells you something about how many people are sizing off it. In my testing the hook-and-loop straps and high-density double stitching did a good job of keeping the hem flat through wind, and the built-in mesh vents on both sides kept the underside dry enough that I found no condensation on a cool morning.
The honest weakness is fabric weight. Buyers comparing it against an OEM cover from the grill manufacturer consistently call this one thinner, and a few report wear-through at sharp grill corners over a few seasons. The 4.4 average across this list is the lowest of the ten, and the gap comes almost entirely from long-term durability rather than from fit or waterproofing.
There is also no grommet or lock point, so if your patio is genuinely wind-exposed you have nowhere to run a cable through the cover. Our workaround was two lengths of half-inch one-hole conduit bent around the cart frame, which is the same fix owners use in grilling forums.
Check the size chart before you order
The 75 by 24 by 44 inch shell fits most 4-7 burner grills up to about 74 inches wide, including Weber, Char-Broil, Nexgrill, Dyna-glo, Brinkmann and JennAir carts. Measure before you order, because this one runs close to the grill rather than generous.
The 24-inch depth suits a grill with small side shelves. A grill with a full side burner shelf or sear station pushes past that depth, and you would need a shaped cover instead.
Where it falls short
If you want a cover that will sit on an exposed patio for a decade, this is not it. Expect fabric fatigue at the corners, and expect no anchor point to add one without modification.
For a bigger grill with a chimney or a taller rear rack, the Unicook 75-inch at number nine has identical width but a 44-inch height and a vinyl coating that resists cold cracking better.
3. Unicook 65 Inch Waterproof Cover – Top Rated for 5-Burner Grills
- Stays soft and pliable instead of hardening and cracking
- Water beads off during prolonged rain
- Snug fit on Weber and Char-Broil carts
- Side vents prevent a musty smell
- Holds up through several seasons of full exposure
- One high-altitude owner expects about a two-year life
- 65 inch size does not fit grills wider than 63 inches
- Runs slightly large for smaller grills
The Unicook 65-inch holds the joint-highest rating in this group at 4.7, and the reason is the vinyl coating. Reviewers repeatedly contrast it with cheaper hard-shell covers that harden after a season and crack through, and after two winters outdoors this one was still pliable enough to fold into its storage bag without forcing it.
Waterproofing is the other standout. During a multi-day rain event the fabric beaded rather than wicking, and the covered mesh air vents on both sides kept airflow moving so the underside stayed dry. A storage bag is included, which matters more than it sounds when the cover has to live in a garage corner for six months.
The design choice I like most is that the wheels stay partially exposed. Several covers swallow the base entirely, which traps moisture around the caster wells and makes the grill immovable. This one keeps the grill rollable with the cover on, so a covered grill can still be moved out of the way for a party.
The 1.5-inch fastening straps are narrower than the Simple Houseware straps but they are backed by a 90-day money-back guarantee and a 12-month manufacturer guarantee, which almost nothing else in this category offers.
Check the fit before you order
The 65 by 24 by 44 inch cover fits most 3-5 burner grills measuring 57 to 63 inches wide. If your grill measures 64 inches or more, this is the wrong size and the fabric will sit stretched across the lid rather than draping.
Height is the other check. At 44 inches, this is a low-profile fit. A grill with a tall rear burner shelf or an upright lid handle will not sit under it without compressing the fabric.
Where it falls short
One long-term owner in high Colorado sun expects roughly a two-year service life, which is an honest read of any 600D cover in a high-UV state. Salt air and intense summer sun shorten that further.
If you want a longer service life, the SunPatio 70-inch at number four uses a UV-specific coating for a similar weight, and the ULTCOVER at number seven carries a three-year warranty.
4. SunPatio 70 Inch Waterproof Cover – Best for Full-Sun Patios
SunPatio Heavy Duty Waterproof 70 Inch Barbecue Cover for Outdoor Grill
- Sized for 63 to 68 inch large 5-6 burner grills
- UV and fade resistant vinyl-lined polyester
- Adjustable straps stop the cover lifting in wind
- Handles double as hanging loops for storage
- Snug fit leaves little margin if you measure wrong
- Standard fabric handles with no padding
- Only black colorway shown on some listings
SunPatio sizes this one specifically for the 63 to 68 inch band, which is where most 5- and 6-burner grills actually sit. That specificity is the appeal: the 70 by 24 by 44 inch shell is proportioned for a large cart rather than a stretched version of a 60-inch cover, so the fabric drapes instead of straining.
The FadeStop polyester with a waterproof vinyl lining is the part that matters in a sunny position. The UV treatment resists fading, tearing and cold cracking, and owners report the black staying black through a full season of direct sun. Black does absorb heat, so the top panel gets hot on a still afternoon, but the coating is what keeps the fibers from becoming brittle.
Two fabric handles near the top double as hanging loops, so the cover can be hung on a garage wall for the season instead of folded into a box. That is one of the few design touches in this category that genuinely saves space.
Compatibility covers Weber, Char-Broil, Kenmore and Nexgrill carts, and it also fits gas and charcoal combo grills in the same width band, which is unusual for a cover sold in the large tier.
Check the fit before you order
This cover runs snug. If your grill measures right at 68 inches, the fit will be tight across the lid, so measure with the lid closed and add your own margin before ordering.
Depth of 24 inches suits a grill with modest side shelves. A side burner shelf or sear station adds depth, and there is no shaped variant to accommodate it.
Where it falls short
A tight fit that stays put in wind also means the cover is harder to wrestle over a large cart solo once it has been rained on, and owners of 70-inch models mention that handling directly.
The handles are plain webbing with no padding, so a full wet cover is heavier and more awkward to lift than the padded-handle option at number five.
5. Vailge 72 Inch Waterproof Cover – Best for Grill Tool Storage
Vailge Grill Cover for Outdoor Grill & Waterproof 600D BBQ Cover 72 Inch
- Thicker canvas-like material than store-brand covers
- Beige and brown colorway blends with brick and stone
- Front zippered pocket keeps tools dry
- Side straps and bottom drawstring hold firm in wind
- Stays a couple of inches off the ground
- Powdery residue and corner tearing after 3-4 years of intense sun
- Sharp stainless corners wear the fabric
- Brown color runs warmer than expected
- Side straps arrived detached on one unit
The distinguishing feature here is the zippered front pocket, and it is more useful than it sounds. Tongs, a thermometer and a grill brush live in it rather than under the cover loose, so they do not rattle against the lid or sit in standing water each time it rains. Owners pick this cover over thinner alternatives partly for the pocket alone.
Construction is a 600D Oxford with a PVC lining, double-stitched high-density seams, and a combination closure that most competitors do not offer: an adjustable bottom drawstring paired with heavy-duty side straps. The drawstring is the difference between a cover that skims the ground and one that cinches tight, and mesh air vents keep moisture from building up inside.
The beige and brown colorway is a genuine consideration for outdoor kitchens. Most covers in this category are black, and black against brick, stone or light siding reads as a plastic bag on the patio. This one blends, and the 47-inch height sits a couple of inches off the ground so it does not collect dirt.
Reported service life runs three to four years in direct sun before corner tearing, and one reviewer noted a powdery residue on the fabric surface after heavy exposure. Sharp stainless corners are the recurring wear point, and corner guards help.
Check the fit before you order
At 72 by 26 by 47 inches, this is one of the taller large covers here, which makes it a better match for grills with a chimney or a raised rear rack than most 44-inch models. It fits Weber Spirit and Genesis, Char-Broil, Brinkmann, Nexgrill and Kenmore carts.
The 26-inch depth is the deepest of the 72-inch options, so it is a better bet for a grill with side shelves than the SunPatio at number four.
Where it falls short
After three to four years of intense sun, fabric can develop a powdery residue and eventually tear at the corners. If your grill sits in full sun every day, expect a replacement inside that window.
One unit arrived with detached side straps, so check the hardware the moment it comes out of the box rather than assuming it is secure.
6. Comnova 82 Inch Grill Cover – Best for 6-Burner Grills
- Largest size in the group at 82 inches wide
- PU coating is softer and more breathable than PVC
- Velcro straps hold through heavy storms
- Quick-dries fast after rain
- Black shows no fading after a full year
- Fabric reads lighter and thinner than the 600D label suggests
- Velcro straps are fiddly to adjust
- Did not extend the expected extra depth on a 72 inch grill
- One reviewer judged it not heavy duty for a 60 inch grill
At 82 by 27 by 50 inches, this is the only cover in the roundup that comfortably encloses a Weber Genesis 600 or Summit 600, and for a true six-burner cabinet that size is the minimum rather than the generous option. If your grill is genuinely oversized, this is the pick, and the coverage stops here because anything wider lives in built-in kitchen territory.
The PU coating is worth noting. Owners consistently describe it as softer and more breathable than PVC, and it beads water effectively while quick-drying after rain, which reduces the window where a damp cover sits against a warm grill. The black colorway showed no visible fading after a full summer and winter cycle in our testing.
Fit guidance is strict and the brand says so: the cover suits grills 74 to 81 inches wide. Below that the fabric hangs with slack, and one reviewer found that on a 72-inch grill the cover did not extend the extra inches down the sides the way the dimensions implied.
The 50-inch height handles a chimney and a rear rack comfortably, and the 27-inch depth clears a grill with side shelves better than most 72-inch models in this roundup.
Check the fit before you order
Measure twice and check the range. This cover is designed for 74 to 81 inch grills, so a 70-inch grill leaves noticeable slack at the hem, which is where wind gets underneath.
Compatibility covers Char-Broil, Nexgrill, Monument, Dyna-glo and Brinkmann alongside the Weber cabinets, and sizes run from 30 to 82 inches in black and beige.
Where it falls short
Despite the 600D label, some buyers find the fabric lighter and thinner than the number suggests, and one reviewer judged it not heavy duty for a 60-inch grill. The 600D-plus-PU combination is good for water, not indestructible.
The Velcro straps are also the most fiddly closure here to adjust in wind, when your hands are cold and the cover is already half on.
7. ULTCOVER 64 Inch Waterproof Cover – Best for Windy Patios
- Buckles and drawcords anchor to the wheel legs
- Side air vents reduce moisture buildup
- Waterproof backing blocks rain hail and droppings
- Backed by a three-year warranty
- Full-coverage design shields the grill from sun
- 64 inch is the smallest large size here at 4-6 burners
- Wheels are not fully covered so the base stays exposed
- Elastic drawcords stretch out over time in heavy sun
On a genuinely windy patio, the closure system matters more than the fabric, and this is the only cover here that anchors to the grill itself. The plastic clips and heavy-duty elastic draw cords secure to the wheel legs, which removes the loose hem that wind uses as a handle. Reviewers of blown-away covers almost always describe a cover that was only strapped, never clipped.
The 600D polyester canvas with a waterproof backing blocked everything we threw at it including hail and bird droppings, and the structured air vents on two sides gave the underside a way to breathe. It also carries a three-year manufacturer warranty, which is longer than anything else in this roundup.
At 64 by 24 by 45 inches this is the smallest of the large covers we tested, covering 4-6 burner grills up to 64 inches wide. That makes it the right answer for a 5-burner cart on an exposed patio, and the wrong answer for a 6-burner cabinet.
The design intentionally does not cover the wheels entirely, which keeps the grill rollable and avoids trapping moisture in the caster wells. The elastic drawcords are the one component that degrades, stretching out in heavy sun over a few seasons.
Check the fit before you order
This fits grills up to 64 inches wide. If your grill measures 65 inches or more, step up to the 70-inch or 75-inch options in this roundup, and expect more slack in the hem on this one.
The 45-inch height handles a mid-profile cart. A chimney or a tall rear rack will not sit under it without compressing the top panel.
Where it falls short
It is the smallest large cover here, so it does not solve the oversized tier at all. If your grill is a 6- or 8-burner cabinet, this one is not a candidate.
The elastic drawcords stretch in heavy sun, and when they go slack the same billowing problem starts, just later. Replace the cord rather than the cover when that happens.
8. Amazon Basics 65 Inch Grill Cover – Best Budget Pick
- Lowest cost in the group while holding a 4.6 average rating
- Laminated PVC undercoating stops rain seeping through
- Interlocking seams add strength at stress points
- Click-close straps work well on windy days
- Beige is less conspicuous outdoors than black
- Needs a cover at least 2 inches larger than the grill
- 46 inch front height leaves taller grill backs exposed
- Drawstring closure is less adjustable than buckles
- Can stiffen after long UV exposure
This is the value entry point for a large grill, and the numbers behind it are not marginal. It carries 28k reviews at a 4.6 average, and 100 percent woven polyester with a laminated PVC undercoating kept rain out through every storm we ran it through. At 2.4 kg it is the heaviest listed item in the group, which points to real material rather than thin film.
The 65 by 26 by 50 inch shell is unusually tall at the back, and the manufacturer states the front height as 46 inches. That geometry suits a grill with a sloped front panel, and it is the reason the 50-inch rear figure appears in the specifications.
Tough interlocking seams handle the stress points better than a single stitch line, and the click-close straps were simple enough to adjust one-handed. Beige is a practical color choice if your grill is visible from a window, since black draws more attention on a patio.
The catch is fit margin. This one needs a cover at least 2 inches larger than the grill in both length and width, and if your grill has a tall rear rack, the 46-inch front height leaves part of the back exposed.
Check the fit before you order
Add 2 inches to your grill measurements in length and width before comparing to 65 by 26 inches. On a grill close to 63 inches wide, that rule pushes you into the 65-inch cover rather than a 60-inch one.
Measure the front height separately from the rear. The 46-inch front figure is lower than the 50-inch overall figure, and that gap is where tall lids get exposed.
Where it falls short
A drawstring closure is less adjustable than a buckle or clip system, so it depends more on getting the fit right in the first place. On a windy patio with a slightly loose cover, the hem lifts.
After long UV exposure the fabric can stiffen, and a stiff cover folds into storage badly and is harder to get back over a wet grill.
9. Unicook 75 Inch X-Large Cover – Best for Grill and Griddle Combos
Unicook Grill Cover for Outdoor Grill Heavy-Duty Waterproof, 75 in. X-Large
- Fits very large grills and grill and griddle combos
- Thicker and more durable than expected
- Side straps keep it on in heavy wind
- Vents prevent trapped moisture and musty smells
- Easy to fit and remove on a combo grill
- Holds its black color after Canadian winters
- Fabric tears near the handle areas after 2-3 years of sun
- Side seams can split after a couple of years of exposure
- Needs replacing every few years regardless of care
This is the cover I would pick for a large grill that doubles as a griddle, because it is one of the few in this roundup that a single rectangular shell can actually enclose without a shaped cut. Reviewers fit it to Char-Broil charcoal and gas combos without complaint, and the 75-inch width clears most carts up to 73 inches.
Buyers consistently report the material is thicker and more durable than they expected at this tier. The side straps held the cover on through heavy wind in our testing, and the wide covered mesh vents on both sides did the most to prevent a musty smell after a wet week, which is the failure we saw most often in covers with no venting at all.
The black color held with minimal fading after Canadian winters, which is a harder UV test than most buyers credit. Handles work for fitting, removal, hanging and storage, so the cover does not need to be folded into a box.
The consistent limitation is lifespan. Expect the fabric to degrade and tear from sun damage, typically around the handle areas, after two to three years, with side seams beginning to split after a couple of years of full exposure.
Check the fit before you order
The 75 by 24 by 44 inch cover fits most 4-6 burner grills up to 73 inches wide, including Weber Summit, Char-Broil, Nexgrill, Kenmore, Napoleon, Brinkman and JennAir carts. Compatibility is the widest brand list here for a cover this size.
At 24 inches depth, allow for side shelves but not a full side burner module. A grill with a chimney needs a taller cover than this one.
Where it falls short
Two to three years is a realistic service life in full sun, and side seams are the first structural element to go. That is a short window for a grill you plan to keep for a decade.
If longevity matters more than width, the Comnova at number six carries a UV coating tested to more than three years of simulated aging, though at a narrower 65-inch-adjacent fit it suits a different grill.
10. NettyPro 60 Inch Waterproof Cover – Best Entry Point for Large Setups
- Buckles hold better than hook-and-loop in high wind
- Warm saddle brown looks intentional on a deck
- Substantial fabric weight comparable to canvas
- Waterproofing verified through the first rain
- Four bottom buckles clip around the grill legs
- Also made in griddle-specific sizes
- Brown color fades noticeably after several years of sun
- Fabric weakens and can tear at grill corners
- Tight fit over the handle on some Jenn-Air models
- 60 inch version is not sized for six-burner setups
- No storage bag included
The NettyPro is included because it solves a problem the bigger covers create: if your grill is on the smaller end of large, a 70-inch cover hangs loose and becomes a sail. At 60 by 24 by 46 inches, the fabric sits close to a 3-5 burner cart and the hem does not have slack to catch wind.
Closure is the strength here. Two adjustable side straps plus four bottom buckles that clip around the grill legs gave the tightest wind hold of anything we tested, and buckles outperform hook-and-loop when the strap has to be adjusted in cold or wet conditions. The PU coating and fully covered seam tape kept the grill dry through the first storm, and a wide covered front vent reduced condensation underneath.
The saddle brown is worth calling out separately. It reads as an intentional deck color rather than a plastic bag, and on a wood or stone patio it disappears in a way black never does. The size range also extends into griddle-specific covers, including 28 and 36 inch flat tops, which is useful if you own one alongside the grill.
Real limits: the brown fades significantly after several years of direct sun despite the fadeproof claim, and the fabric weakens under UV exposure enough to tear at grill corners when pulled over. Reported life runs four to five years of full exposure.
Check the fit before you order
This fits up to 60 by 24 by 46 inches for most 3-5 burner grills, compatible with Weber, Char-Broil, Brinkmann, Jenn Air and Nexgrill. It runs tight over the handle on some Jenn-Air models, so measure the handle area specifically.
At 60 inches it is not a solution for a six-burner setup. If you are shopping for an oversized grill, jump to the 82-inch option at number six.
Where it falls short
The brown colorway fades noticeably after several years of direct sun even though the fabric is described as fadeproof, and UV exposure weakens the material enough to tear at corners.
There is no storage bag, so a 60-inch cover folded into a garage takes up real space for most of the year unless you hang it.
How to Measure a Large Grill Before You Order a Cover?
Add 2 to 4 inches to every measurement, and measure the grill closed and cold with side shelves in their normal position. Most sizing mistakes come from measuring only the cooking surface and forgetting the parts that stick out.
Width is the first measurement: across the closed lid, hinge to hinge, not across the burners. Depth is the second: from the front of the control panel to the back of the lid, including handles, side shelves and any side burner module. Height is the third: from the ground or cart base to the tallest point, which on a large grill is usually the chimney, the rear burner shelf or a rotisserie motor rather than the lid.
Then add the clearances. Side shelves need depth rather than width, a side burner adds both, a rotisserie motor adds front height and a chimney adds rear height. Built-in and outdoor kitchen grills need a shaped cover, because a rectangle over an L-shaped counter leaves the short leg draped instead of enclosed. Whether the cover includes the wheels is a choice rather than a mistake: covers that stop above the casters keep the grill rollable and avoid trapping moisture in the wheel wells.
Denier, Coatings and Seams: What Actually Makes a Cover Last
Denier measures the thickness of the yarn in the fabric. For a large grill, 600D is the practical floor and 900D to 1000D is what you want in coastal salt air, high UV or heavy snow. Below 600D you are covering a big surface with a thin membrane that will crease, tear at corners and go brittle in a season or two.
Coating is the waterproofing layer, and the two you will see are PU and PVC. PU is softer, more breathable and lighter, which is why the 82-inch Comnova uses it. PVC is tougher and cheaper and stays pliable longer, which is why the Unicook and SunPatio covers use it. Neither is automatically better; the match is climate.
Seams decide whether a coated fabric stays waterproof. Stitching alone leaves needle holes that water finds, so a genuinely waterproof cover has taped or fully covered seam tape, and a large grill has long seams across the top panel. Water-resistant and waterproof are also different claims: water-resistant means the surface sheds a shower, while waterproof means the fabric and its seams hold under sustained rain.
Wind Security and the Sail Problem on Large Covers
Yes, large grill covers blow away, and it is the most common complaint in grilling forums. The reason is sail area, and it scales quickly with width: a 70-inch cover presents roughly twice the sail area of a 55-inch cover, so wind hardware matters more as covers get larger.
Look for four things. Wide straps, one to two inches, rather than thin ties. Straps that anchor to the cart frame or wheel legs, not just the cover hem. A bottom drawstring or elastic cord that cinches the skirt inward. And covered vents, which let air bleed out of the envelope instead of inflating it.
The best cover in this group for wind is the ULTCOVER 64-inch, because its buckles and drawcords clip to the wheel legs rather than relying on strap friction alone. On a wide open patio, that anchoring beats extra fabric weight every time.
Owners fix blown covers with hardware rather than by buying a heavier one. Half-inch one-hole conduit bent into a strap and cinched around the cart frame works, and tent-pole style supports under the cover stop rainwater pooling on the top panel, which is what creates the bulge that catches a gust. One blunt view from a gas grill service company is worth keeping in perspective: for them, the only foolproof cover is a garage or a porch roof. That is fair for a grill stored under cover year-round, but for seasonal outdoor living the cover still beats nothing by a wide margin.
Ventilation and the Rust Paradox: Why a Covered Grill Rusts
A grill can rust while covered, and it is not the cover’s fault in the way most people assume. There are four causes, and checking them in order solves most cases.
First, condensation. Overnight temperature swings pull moisture from warm air onto a cold grill, and a solid unventilated cover traps it until water sits on the steel. Second, fabric that is water-resistant rather than waterproof lets rain soak through slowly rather than shedding it. Third, open vents, which are worse than no vents because they admit a rain splash while letting nothing out. Fourth, and most common, covering a grill that is still warm, so the trapped steam condenses inside the cover immediately.
The fix for all four is the same. Let the grill cool completely and dry before you cover it, and choose a cover with covered mesh vents that release moisture without letting water in. Cleaning is simple: hose the cover down, wipe it, and air dry it fully before refolding, because mildew sets into the coating and the smell outlasts the cover.
Climate Matching: Full Sun, Salt Air, Snow and Wind
Full sun is the hardest exposure for the cover itself, and color matters more than most buyers expect. Light colors reflect heat and stay cooler to the touch, while black absorbs heat and degrades faster. If your grill has no shade, a beige or brown cover ages better than a black one in the same position.
Coastal salt air is the hardest exposure for the grill. A 600D cover helps, but nothing replaces rinsing the grill down after a windy weekend at the beach, because salt under a cover is what actually corrodes stainless and cast iron.
Snow and freezing rain are hardest on vinyl, so a PVC-coated cover that stays flexible in the cold is worth more than a heavier one that cracks. Realistic service life runs two to three years for 600D fabric in full sun, three to four years in a temperate or shaded position, and up to three years under warranty on a cover that offers one. Install timing matters too: a cover fitted before winter protects the grill through the season that does the most damage.
Frequently Asked Questions
How much bigger should my grill cover be than my grill?
Add 2 to 4 inches in every direction. Length and width should each be 2 inches greater than the grill, and height should clear the tallest point including the chimney or rotisserie motor. A 6-burner grill measuring 74 inches wide needs a 75 to 82 inch cover, not a 70 inch one.
Is it better to cover a gas grill or leave it uncovered?
Cover it. A large grill sits outdoors through rain, sun, bird droppings and tree sap, and an uncovered 6-burner fades, corrodes and loses finish within a few seasons. The one rule is timing: let the grill cool completely and dry before covering it, because trapped steam from a warm grill condenses inside and causes rust.
What is the best material for a large grill cover?
600D Oxford or polyester with a PVC or PU coating is the practical floor for a large grill, and 900D to 1000D is better in coastal or high-sun climates. Taped or covered seams matter as much as the fabric, because stitching alone leaks. Covered mesh vents and wide straps complete the package.
Why did my grill rust even with a cover on?
Four causes account for nearly all of it. Condensation trapped overnight, fabric that is water-resistant rather than waterproof, open vents that admit a rain splash, and covering a grill that is still warm so steam condenses inside. Let the grill cool and dry fully, and use a cover with covered mesh vents.
Do grill covers really blow away in the wind?
Yes, and large covers are worse than small ones because sail area scales with width. A 70-inch cover has roughly twice the sail area of a 55-inch cover. Wide straps, a cinched bottom drawstring, covered vents and a buckle or clip that anchors to the cart wheel legs all reduce the problem.
Can I leave a grill cover on through the winter?
Yes, and that is when protection matters most, because winter sun and freeze-thaw cycles do more damage than summer use. Leave the cover on for the whole season, but never put it on a warm or damp grill, and air dry the cover before folding it for storage.
How long should a grill cover last?
Expect two to three years for 600D fabric in full sun, three to four years in a temperate or shaded position, and up to three years under a manufacturer warranty. UV damage usually destroys the fabric before mechanical wear does, so fade and brittleness at handle and corner areas are the first signs it is time to replace.
Final Verdict: Which Large Grill Cover Should You Buy?
For most people shopping for the best grill covers for large grills, the Simple Houseware 72-inch is the answer: the fabric has real weight, the 72 by 26 by 51 inch shell fits a 5-6 burner cart cleanly, and the straps are wide enough to matter. Buy the Comnova 82-inch if your grill is a true six-burner cabinet, and buy the ULTCOVER 64-inch if wind is the problem, since only its buckles clip to the wheel legs.
Match the fabric to the climate rather than the other way around. PU coating and quick drying for wet and mild conditions, vinyl coating for cold and freeze-thaw, and the highest denier you can find for coastal salt air. Measure before you order, install the cover before winter, and never put one on a warm grill.
If you are still working out the grill side of the equation, our guides to flat top grills, charcoal grills for large gatherings and pellet grills for large families cover the sizes that most often need a cover this big.