How Do You Wash a Mattress Cover? Simple Steps for Cleaner Sleep

If you’re wondering “How do you wash a mattress cover?”, you’re not alone. Mattress covers and protectors handle spills, sweat, dust, and daily wear, so keeping them clean is an important part of basic mattress use & care.

This guide explains how to wash a mattress cover safely, how often to do it, and what to watch out for so you don’t accidentally damage the fabric, waterproof layer, or zipper.

What Type of Mattress Cover Do You Have?

Before you decide how to wash a mattress cover, it helps to know what you’re dealing with:

  • Quilted or padded covers
    Often have a soft, plush top and may contain fiberfill.
  • Waterproof protectors
    Usually have a fabric top with a thin waterproof backing (often a plastic-like layer).
  • Encasement covers
    Zip all the way around the mattress and are designed to fully enclose it.

Why this matters:
Different materials and constructions may have different wash temperatures and settings. Some can handle warm water and a dryer, while others require cold water and air-drying to protect the waterproof membrane or fabric.

Always start by checking the care label on the tag. If instructions on the label conflict with any general tips here, follow the label.

Step-by-Step: How Do You Wash a Mattress Cover?

1. Remove and inspect the cover

  • Take the cover or protector off the mattress carefully, especially around corners and zippers.
  • Check for stains, rips, or a peeling waterproof layer.
  • If you see damage, avoid harsh washing or high heat, as this may make it worse.

2. Pre-treat visible stains (optional)

If you see fresh spills, sweat marks, or spots:

  • Gently blot (do not rub) with a clean cloth.
  • Use a small amount of mild detergent mixed with water on the stain.
  • Let it sit for a few minutes, then rinse or blot again with clean water.

Avoid bleach or strong chemicals unless the care label clearly allows it, as these can weaken fabric and waterproof coatings.

3. Choose the right washing machine settings

For most fabric mattress covers and protectors:

  • Water temperature:
    • Cool or warm is usually safest.
    • Hot water is sometimes allowed, but may shorten the life of elastic or waterproof layers.
  • Cycle type:
    • Gentle or normal cycle is generally recommended.
    • Use a gentle cycle for padded or quilted covers to protect the fill.
  • Detergent:
    • Use a mild, liquid detergent.
    • Avoid fabric softener if the cover is waterproof, as it may affect its protective qualities.

If the care label says “hand wash only”, fill a tub or sink with cool water and mild detergent, gently agitate the cover by hand, rinse thoroughly, and press (don’t wring) out excess water.

Can You Put a Mattress Cover in the Dryer?

Many people ask not only “How do you wash a mattress cover?” but also whether they can safely dry it in a machine.

4. Drying your mattress cover

Check the tag for “tumble dry” or “air dry” guidance.

  • Tumble dry low
    • Often safe for fabric-only covers and some waterproof protectors.
    • Use low heat to help protect elastic edges and any waterproof membrane.
  • Air dry or line dry
    • Often recommended for waterproof covers to reduce the risk of cracking or peeling.
    • Hang or lay flat in a well-ventilated area until fully dry.

Avoid high heat, ironing, or dry cleaning unless the care label specifically allows it.

How Often Should You Wash a Mattress Cover?

There’s no single rule, but common routines include:

  • Every 1–2 months for regular use.
  • More often if:
    • You share your bed with pets.
    • You sleep hot or sweat heavily.
    • There are frequent spills or accidents.

Washing too infrequently can lead to lingering odors and build-up of dust and oils. Washing extremely frequently, especially on hot or harsh cycles, may shorten the life of the fabric or waterproof layer. A balanced schedule works best.

Common Questions About Washing Mattress Covers

Will washing affect waterproofing?

Repeated hot washes or high-heat drying can stress the waterproof backing on some protectors, sometimes causing cracking or peeling over time. Using cool or warm water and low heat tends to be gentler.

What if the cover isn’t removable?

If the cover is sewn to the mattress and cannot be removed:

  • Spot-clean with a mild detergent and water.
  • Avoid soaking the mattress.
  • Use a removable protector on top in the future to make cleaning easier.

Can you use bleach?

Unless clearly stated on the care tag, it’s safer to avoid bleach. It can fade colors, weaken fibers, and damage waterproof materials.

✅ Quick Mattress Takeaways

Key points to understand about “How Do You Wash a Mattress Cover”

  • Always read the care label first – it gives the most accurate instructions for your specific cover.
  • Use gentle settings – mild detergent, cool or warm water, and a gentle cycle usually work well.
  • Protect waterproof layers – avoid high heat, harsh chemicals, and rough handling.
  • Pre-treat stains – blot and treat spots before washing for better results.
  • Dry completely – whether tumble-drying on low or air drying, make sure the cover is fully dry before putting it back on the mattress.
  • Wash regularly but not excessively – every 1–2 months is common, more often if there are pets, spills, or heavy use.

Keeping your cover clean is a straightforward part of mattress use & care once you know how. By following the care tag and these basic steps, you can wash a mattress cover effectively while helping preserve its comfort and protective features over time.