Outdoor furniture covers help protect your patio furniture from rain, UV rays, dirt, pollen, and snow. But after months of outdoor use, they also collect dust, bird droppings, tree sap, and mildew, making regular cleaning essential.
A common question homeowners ask is: Can outdoor furniture covers be machine washed?
The answer depends on the material. Some fabrics are durable enough for a gentle machine wash, while others can lose their waterproof coating, shrink, or become damaged if washed incorrectly.
Here's everything you need to know.
Why Cleaning Your Outdoor Furniture Cover Matters
Even if your cover looks clean, it can trap moisture, pollen, mold spores, and airborne contaminants. Regular cleaning helps:
- Extend the life of the cover
- Prevent mildew and unpleasant odors
- Maintain waterproof performance
- Keep dirt from transferring to your furniture
- Improve the appearance of your outdoor space
For most homeowners, cleaning the cover once or twice a season is enough, although homes in humid or dusty climates may require more frequent washing.
Outdoor Furniture Cover Materials That Are Usually Machine Washable
1. Polyester Fabric
Polyester is by far the most common material used for outdoor furniture covers. It's lightweight, durable, and generally handles gentle machine washing very well.
Many premium polyester covers feature a PU (polyurethane) backing for water resistance. While occasional machine washing is usually safe, repeated hot washes can gradually reduce the effectiveness of the waterproof coating.
Best washing practices
- Use cold water
- Select a gentle cycle
- Use mild detergent
- Avoid bleach
- Air dry completely
2. Nylon Fabric
Nylon is another synthetic fabric that's commonly safe for machine washing. It's strong, flexible, and resistant to tearing.
However, nylon may absorb more moisture than polyester, so complete air drying is important to prevent mildew.
Best washing practices
- Gentle cycle
- Cold water
- Mild detergent
- Air dry
3. Cotton Canvas
Canvas covers can often be machine washed, especially lightweight versions.
However, natural cotton canvas is more likely to shrink than synthetic materials. If the cover has been waxed or waterproof treated, machine washing may remove those protective finishes.
Best washing practices
- Cold water only
- Gentle cycle
- Never tumble dry on high heat
- Expect slight shrinkage on untreated cotton
4. Synthetic Blend Fabrics
Many outdoor furniture covers combine polyester with other synthetic fibers to improve strength, flexibility, or weather resistance.
Most synthetic blends are machine washable unless they include specialty coatings.
Best washing practices
- Follow the manufacturer's instructions
- Wash on gentle cycle
- Air dry whenever possible
5. Mildew-Resistant Outdoor Fabrics
Some premium covers are manufactured with mildew-resistant technology built directly into the fabric.
Most of these materials tolerate gentle machine washing without losing their antimicrobial properties.
However, avoid harsh chemicals that may reduce the effectiveness of the treatment.
Best washing practices
- Mild detergent only
- No bleach
- Air dry
Outdoor Furniture Cover Materials That Should NOT Be Machine Washed
1. Vinyl (PVC) Covers
Vinyl is completely waterproof, but it's also one of the least suitable materials for machine washing.
The agitation inside a washing machine can cause cracks, weaken seams, or damage the waterproof surface.
Instead, wipe vinyl covers with warm water, mild soap, and a soft sponge.
2. Waterproof or Coated Fabrics
Many premium covers use waterproof coatings such as:
- Polyurethane (PU)
- PVC backing
- Durable Water Repellent (DWR)
Frequent machine washing can gradually wear away these coatings, reducing water resistance.
If washing is necessary, use the gentlest settings and avoid hot water or harsh detergents.
3. Delicate Decorative Fabrics
Decorative outdoor covers made from delicate materials—including silk, satin, or lightweight woven fabrics—are generally not designed for machine washing.
These fabrics can tear, wrinkle, or lose their shape during the wash cycle.
4. Embroidered or Decorative Covers
If your cover includes:
- Embroidery
- Printed artwork
- Decorative stitching
- Logos with heat transfer
Machine washing may damage these details.
Spot cleaning or hand washing is usually recommended.
5. Non-Removable Cushion Covers
Some outdoor cushions have permanently attached covers.
Attempting to machine wash the entire cushion can:
- Damage the foam
- Prevent complete drying
- Lead to mold growth inside the cushion
Instead, clean the surface with mild soap and water.
6. Leather or Faux Leather Covers
Leather and synthetic leather should never go into a washing machine.
Water and agitation can:
- Crack the surface
- Remove protective finishes
- Cause permanent deformation
Use cleaners designed specifically for leather materials.
7. Heavy Fabrics That May Shrink
Heavy untreated fabrics—including certain cotton canvas and wool blends—may shrink significantly after machine washing.
Always check the care instructions before cleaning.
8. Fabrics with Special Performance Treatments
Some outdoor fabrics receive treatments for:
- Flame resistance
- UV protection
- Insect resistance
- Anti-static performance
Machine washing may reduce the effectiveness of these specialized finishes.
Always follow the manufacturer's cleaning instructions.
| Material | Machine Wash Safe? | Notes |
|---|---|---|
| Polyester | ✅ Yes | Gentle cycle and cold water |
| Nylon | ✅ Yes | Air dry thoroughly |
| Cotton Canvas | ⚠️ Sometimes | May shrink if untreated |
| Synthetic Blends | ✅ Usually | Check care label |
| Mildew-Resistant Fabrics | ✅ Often | Avoid bleach |
| Vinyl (PVC) | ❌ No | Wipe clean only |
| Waterproof-Coated Fabrics | ⚠️ Depends | Frequent washing may reduce water resistance |
| Embroidered Covers | ❌ No | Hand wash or spot clean |
| Leather/Faux Leather | ❌ No | Use specialty cleaners |
| Non-Removable Cushion Covers | ❌ No | Surface clean only |
Tips for Safely Washing Outdoor Furniture Covers
If your cover is labeled as machine washable, following a few simple steps can help preserve its protective performance:
- Shake off loose dirt before washing.
- Zip or fasten closures to prevent snagging.
- Wash with cold water on a gentle cycle.
- Use a mild, bleach-free detergent.
- Avoid fabric softeners, which can affect water repellency.
- Never use high heat when drying.
- Allow the cover to air dry completely before placing it back on your furniture.
These practices help maintain both the fabric and any water-resistant finishes for longer-lasting protection.
Not every outdoor furniture cover belongs in the washing machine. A few extra minutes spent cleaning your cover correctly can extend its lifespan, preserve its weather-resistant performance, and keep your patio furniture protected season after season.
