How To Wash Waterproof Mattress Cover: Simple Care Guide & FAQs

If you’re searching for how to wash waterproof mattress cover, you’re likely worried about keeping it clean without ruining the waterproof layer. This guide walks through the basics, step by step, and answers the most common questions so you can wash your cover with confidence.

What Is a Waterproof Mattress Cover and Why Does Washing Matter?

A waterproof mattress cover (or protector) is a fabric layer with a thin waterproof membrane on one side, designed to keep spills, sweat, and everyday moisture away from your mattress.

Keeping it clean matters because:

  • It helps control odors and stains on the cover itself
  • It keeps your sleep surface fresher between sheet changes
  • It can extend the life of your mattress by blocking moisture and debris

However, washing it the wrong way can damage the waterproof backing, causing peeling, cracking, or leaks. That’s why knowing how to wash waterproof mattress cover properly is important.

How To Wash Waterproof Mattress Cover: Step-by-Step

1. Check the care label first

Always start by reading the care tag sewn into the cover. Instructions can vary by material, but most waterproof mattress covers follow a similar pattern.

Look for:

  • Recommended water temperature
  • Whether machine wash is allowed
  • Approved detergent types
  • Any warnings about bleach, fabric softener, or high heat

2. Pre-treat stains gently

If there are visible stains (from spills, sweat, or accidents):

  • Blot up any fresh liquid with a clean towel
  • Apply a small amount of mild detergent or a gentle stain remover to the stained area
  • Let it sit for a few minutes, then lightly rub the fabric together or use a soft cloth

Avoid harsh scrubbing, which can stress the waterproof layer below the fabric surface.

3. Machine wash on a gentle cycle

Most waterproof covers can be machine washed. In general:

  • Use cold or warm water, not hot
  • Select a gentle or delicate cycle
  • Add a small amount of mild liquid detergent
  • Wash it separately or with lightweight items like sheets and pillowcases

Avoid heavy items like towels or jeans, which can twist and stretch the cover.

4. Avoid bleach, fabric softeners, and harsh chemicals

To protect the waterproof membrane:

  • Do not use bleach, even for whitening
  • Skip fabric softener (liquid or dryer sheets)
  • Avoid detergents labeled as “heavy-duty” or with strong additives

These products can break down or coat the waterproof layer, reducing its ability to block moisture.

How Should You Dry a Waterproof Mattress Cover?

Drying is just as important as washing when it comes to preserving waterproofing.

Can you put a waterproof mattress cover in the dryer?

Often yes—but with low heat and care:

  • Use tumble dry low or air dry setting
  • Remove promptly to avoid excessive heat exposure
  • Make sure the cover is fully dry before putting it back on the bed

High heat can cause the waterproof backing to melt, warp, or crack over time.

Is air drying better?

Air drying is often a gentle option:

  • Hang over a clothesline or drying rack
  • Keep it out of direct, intense sunlight for long periods (this can age some materials)

This approach reduces heat stress on the waterproof layer and can help it last longer.

How Often Should You Wash a Waterproof Mattress Cover?

How often to wash depends on use:

  • Regular use: about every 1–2 months
  • Allergy concerns or heavy sweating: more often, such as every 2–3 weeks
  • After any spill or accident: wash as soon as possible

Washing too rarely can lead to buildup of sweat, oils, and odors. Washing too often, especially with harsh cycles or high heat, can wear the cover out more quickly. A balanced routine usually works best.

Common Mistakes When Washing a Waterproof Mattress Cover

Here are some mistakes to avoid so the cover stays waterproof:

  • Using hot water or high dryer heat
  • Adding bleach or fabric softener
  • Scrubbing stains aggressively
  • Washing with heavy or abrasive items
  • Ironing the cover (heat from irons can damage the backing)

Keeping the wash routine gentle helps maintain both comfort and protection.

How Do You Know If the Waterproof Layer Is Damaged?

Over time, even with careful washing, waterproof layers can wear out. Signs of damage include:

  • Peeling or flaking on the underside of the cover
  • A crackly, stiff feel on the backing
  • Noticeable leaks after spills or accidents
  • Visible tears or thinning in high-stress areas

If you notice these, the cover may no longer provide full protection, even if it still looks fine from the outside.

✔️ Quick Mattress Takeaways

Key points consumers should understand about How To Wash Waterproof Mattress Cover

  • Read the care label first: Follow the manufacturer’s instructions for water temperature and cycle.
  • Use gentle settings: Wash on a cold or warm, gentle cycle with mild detergent.
  • Skip harsh products: Avoid bleach, fabric softeners, and strong chemicals that can break down waterproofing.
  • Dry on low or air dry: High heat in the dryer can damage the waterproof membrane.
  • Wash regularly but not excessively: Every 1–2 months, and always after spills or accidents.
  • Check for wear: Look for peeling, cracking, or leaks as signs the waterproof backing is failing.

With a simple, gentle routine, you can keep your waterproof mattress cover clean and comfortable while helping it stay reliably protective for as long as possible.