To maintain a grill cover, clean it every few months with mild soap and water, treat it with a fabric protectant, and store it off the ground when not in use. Regular care prevents mold, UV damage, and tears, ensuring your cover lasts for years.

Quick Answer

Grill cover maintenance is straightforward: clean, protect, store properly, and repair minor damage promptly. Focus on removing debris, avoiding harsh chemicals, and ensuring ventilation to prevent mold.

  • Cleaning Frequency: Clean your grill cover every 2-3 months during grilling season, or more often if you live in a dusty area.
  • Drying: Always let the cover dry completely before putting it back on the grill to prevent mold and mildew.
  • UV Protection: Use a fabric UV protectant spray every season to reduce fading and cracking from sun exposure.
  • Storage: Store the cover off the ground in a dry, shaded area when not in use for extended periods, like winter.

1. Clean Your Grill Cover Regularly

Start by removing the cover and shaking off loose debris like leaves, dirt, and spider webs. Lay it flat on a clean surface—driveway or patio—and hose it down to wet the fabric.

Mix a solution of mild dish soap (like Dawn) with warm water in a bucket. Use a soft-bristle brush or sponge to scrub both sides gently. Avoid bleach, ammonia, or harsh detergents; they can degrade the waterproof coating and fade colors. Rinse thoroughly with a garden hose until no soap residue remains.

For stubborn stains like bird droppings or tree sap, apply a small amount of undiluted dish soap directly to the spot, let it sit for five minutes, then scrub. After rinsing, let the cover air-dry completely—this can take several hours in direct sun. Never put a wet cover back on the grill, as trapped moisture leads to mold and mildew growth.

2. Apply a Fabric Protectant

Once the cover is clean and dry, treat it with a fabric protectant spray designed for outdoor gear. Products like Scotchgard Outdoor Water Shield or 303 Fabric Guard work well. These sprays add a water-repellent layer and block UV rays, which helps prevent fading and cracking.

Hold the can about six inches from the fabric and apply an even coat, covering all surfaces. Pay extra attention to seams and areas that see the most sun. Let the cover dry for at least 24 hours in a well-ventilated area before putting it back on the grill. For best results, reapply protectant once a year, ideally at the start of grilling season.

3. Proper Storage When Not in Use

If you store your grill for winter or long periods, take the cover off and clean it first. Fold or roll the cover loosely—avoid tight creases that can crack the fabric over time. Store it in a dry, dark place like a garage or shed, away from direct sunlight and rodents. Hanging it on a hook or laying it flat on a shelf is ideal.

During grilling season, when the cover is on the grill daily, ensure it fits snugly but allows some airflow. Most covers have vents or a loose bottom edge: don’t block these. Good ventilation prevents condensation from building up under the cover, which can cause rust on the grill and mold on the cover’s underside.

4. Repair Minor Damage Promptly

Small tears or holes can quickly grow if ignored. For minor rips, use a patch kit designed for outdoor fabrics, like Gear Aid Tenacious Tape. Clean the area around the tear with rubbing alcohol, cut a patch slightly larger than the damage, and press it firmly onto both sides of the fabric. For larger tears, you can sew a patch with heavy-duty thread and a sewing awl, then seal the stitches with seam sealer.

If the cover’s drawstring or buckle breaks, replace it with a similar cord or clip from a hardware store. Keep the cover off the grill until repairs are complete and dry. Prompt repairs can extend a cover’s life by one or two seasons.

5. Prevent Mold and Mildew

Mold and mildew are the most common problems with grill covers, especially in humid climates. To prevent them, always ensure the cover is completely dry before placing it on the grill. If you notice a musty smell or dark spots, clean the cover immediately with a solution of one cup white vinegar per gallon of water. Scrub the affected areas, rinse well, and dry in direct sunlight.

To further reduce moisture, consider placing a desiccant pack (like silica gel) inside the cover when storing it off the grill, or elevate the cover off the ground with a small rack or hooks. Some covers come with a breathable fabric lining; if yours doesn’t, you can add a layer of ventilation by not cinching the bottom too tightly.

Pro Tips

  • After cleaning, dry the cover upside down on a clothesline to let water drain from pockets and seams.
  • Use a lint roller or tape to remove pet hair and lint before washing—this keeps the soapy water from turning into a sticky mess.
  • If your cover has a plastic coating, avoid fabric protectants with solvents; use a silicone-based spray instead.
  • In snowy climates, brush off heavy snow accumulation to prevent the cover from stretching or tearing under the weight.

Common Mistakes to Avoid

  • Using bleach or harsh chemicals to clean the cover—this destroys waterproofing and UV resistance.
  • Putting the cover back on while still damp—this guarantees mold growth inside the cover.
  • Storing the cover in a plastic bag or sealed container—trapped moisture causes mildew; use a breathable storage bin.
  • Ignoring small tears until they become large rips—a simple patch can save you from buying a new cover.

FAQ

How often should I clean my grill cover?

Clean it every two to three months during grilling season, or more often if you notice heavy dirt, bird droppings, or tree sap. In winter storage, clean it once before putting it away.

Can I machine wash my grill cover?

It depends on the material. Vinyl or plastic covers should never go in a machine—hand wash only. Fabric covers (polyester, canvas) can be machine washed on a gentle cycle with cold water, but always check the manufacturer’s label first.

What’s the best way to store a grill cover in winter?

Clean and dry the cover thoroughly, then fold or roll it loosely and store it in a dry, dark place like a garage or basement. Avoid attics or sheds that get very hot or humid, as extreme temperatures can degrade the fabric.

The Bottom Line

With regular cleaning, timely repairs, and proper storage, your grill cover can last three to five years or longer. A well-maintained cover not only protects your grill from rain, sun, and snow but also saves you money by delaying the need for a replacement. Make these simple steps part of your grilling routine, and your cover will stay in great shape season after season.

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