Can Mattress Covers Be Washed? Practical Care Guide and FAQs

If you’re wondering “Can mattress covers be washed?”, you’re not alone. Many people want a cleaner bed but worry about damaging their mattress or voiding a warranty. This guide walks through when and how mattress covers can be washed, what to avoid, and how to keep your sleep surface fresh for the long term.

What Exactly Is a Mattress Cover?

Before answering “Can mattress covers be washed?”, it helps to clarify what kind of cover you have. People often use different terms for similar items:

  • Mattress cover / encasement: A fabric layer that usually zips around all sides of the mattress.
  • Mattress protector: A fitted or zippered layer that shields the mattress from spills, sweat, or everyday wear.
  • Removable mattress cover: A zip-off outer fabric layer that comes with some mattresses.

All of these can sometimes be washable, but washing rules depend on the material and construction.

Can Mattress Covers Be Washed in a Machine?

In many cases, yes, mattress covers can be washed in a washing machine, but not always.

Most common washable covers are:

  • Cotton or cotton-blend protectors
  • Polyester or microfiber covers
  • Many zip-off covers that are clearly labeled “machine washable”

However, some covers have:

  • Delicate fabrics
  • Special waterproof membranes
  • Foam or padding attached inside

These may need gentle cycles, cold water, or even spot cleaning only.

🔍 Always check the care label first. If the tag says “spot clean only” or “do not machine wash,” follow those instructions to avoid shrinking, tearing, or damaging any special layers.

How Should I Wash a Mattress Cover Safely?

When the label confirms that mattress covers can be washed, use these general guidelines:

  1. Use a gentle or delicate cycle
    This reduces stress on seams, zippers, and waterproof layers.

  2. Cold or warm water
    Hot water can sometimes shrink fabrics or weaken elastic and laminated layers.

  3. Mild, liquid detergent
    Avoid bleach and harsh chemicals unless the care tag specifically allows them.

  4. Zip it up first
    Closing zippers helps the cover keep its shape and protects the fabric from getting caught.

  5. Wash it alone or with light items
    Heavy items like towels or jeans can cause friction and premature wear.

Can I Put a Mattress Cover in the Dryer?

Many washable mattress covers can be tumble dried on low, but heat is one of the most common reasons covers wear out early.

General drying tips:

  • Choose low heat or air dry

  • Avoid very high temperatures that can:

    • Shrink fabric
    • Crack or peel waterproof layers
    • Damage elastic

  • If the label recommends line drying or laying flat, follow that advice for longer-lasting protection.

What If My Mattress Cover Says “Spot Clean Only”?

If the answer to “Can mattress covers be washed?” for your specific cover is no, it may say “spot clean only” or “do not machine wash” on the label.

In that case:

  • Blot, don’t scrub: Gently clean the area with a damp cloth and mild soap.
  • Avoid soaking: Excess moisture can seep into the mattress.
  • Allow full drying before putting sheets or bedding back on.

For heavier spills or stains on a non-washable cover, some people use an additional washable protector on top so the main cover doesn’t need frequent cleaning.

How Often Should I Wash a Mattress Cover?

How often mattress covers can be washed depends on use and environment, but many people find that:

  • Every 1–3 months works for regular household use.
  • More often if:
    • There are frequent spills
    • You share the bed with children or pets
    • You live in a hot or humid climate
  • Immediately after noticeable spills or accidents to prevent odors and staining.

Washing too aggressively (high heat, harsh cycles) can wear a cover out faster, so it’s a balance between cleanliness and fabric care.

Does Washing a Mattress Cover Affect the Mattress or Warranty?

Washing the removable external cover usually doesn’t affect the mattress itself, as long as:

  • You don’t soak the internal foam or core
  • You follow the manufacturer’s care instructions

For warranty considerations, some mattresses require the surface to be protected from stains and damage. A properly used and maintained protector or cover can support this, but it’s wise to read any included care and warranty information to know what is expected.

What If There’s No Care Label?

If the tag is missing or unreadable and you’re unsure whether mattress covers can be washed, a cautious approach is best:

  • Test a small hidden area with water and mild detergent.
  • Avoid hot water and high-heat drying.
  • Choose a gentle cycle and low spin.
  • If the fabric seems delicate or stretchy, consider hand washing and air drying.

✅ Quick Mattress Takeaways

Key points consumers should understand about “Can Mattress Covers Be Washed”

  • Most fabric mattress covers and protectors can be machine washed, but the care label is the final authority.
  • Delicate or waterproof covers often need gentle cycles, cold water, and low-heat or air drying.
  • “Spot clean only” labels mean the entire cover should not be machine washed; limit cleaning to surface stains.
  • Washing frequency of every 1–3 months works for many households, with extra washes after spills or accidents.
  • High heat is a common cause of damage, especially to elastic and waterproof layers, so low heat or line drying is safer.
  • If in doubt, treat the cover gently: mild detergent, gentle cycle, cool water, and careful drying.

By understanding when and how mattress covers can be washed, you can keep your sleep surface fresher and more comfortable while helping your mattress stay in good condition over time.