Do Waterproof Mattress Covers Really Work? Here’s What You Need to Know Before You Buy

Last Updated on 26/04/2025 by Tony Abrahams

If you’re wondering “Do waterproof mattress covers really work?” — you’re not alone. Whether it’s sweat, spills, pets, or little ones who have nighttime accidents, a waterproof mattress protector sounds like the perfect solution. But does it live up to the hype?

Let’s break down the six biggest questions people ask before investing in one — and whether these covers truly deliver what they promise.

Do Waterproof Mattress Covers Really Work To Actually Stop Liquid From Getting Through?

Yes — but only if they’re made right.

A good-quality waterproof cover acts like a shield between your mattress and any liquids. It blocks urine, sweat, coffee, red wine (yes, we’ve all been there), and other fluids from soaking into the mattress below. Without this barrier, stains become permanent, odours settle in, and your expensive mattress starts breaking down fast.

But here’s the catch: not all covers are created equal. Cheaper ones may only protect the top surface and leave the sides exposed. The best covers offer 360° encasement — fully wrapping the mattress in a protective layer.

Can You Feel the Waterproof Layer While Sleeping?

This is a big one — because nobody wants to feel like they’re sleeping on a crunchy plastic sheet.

Modern waterproof mattress covers have come a long way. High-quality options use a soft, breathable polyester or bamboo fabric on the outside with a super-thin waterproof membrane inside. That means you get protection without the crinkle, noise, or plastic feel.

If you’ve been scarred by old-school vinyl mattress covers from your childhood — don’t worry. Today’s designs are whisper-quiet and feel just like a regular fitted sheet.

Do Waterproof Mattress Protectors Cause Sweating or Overheating?

Short answer: not if you choose the right one.

Low-quality covers trap heat because they’re made from non-breathable materials. But the good ones — the kind with moisture-wicking, temperature-regulating fabrics — help keep you cool, dry, and comfortable all night long.

Look for words like “breathable,” “cooling,” or “hypoallergenic” in the product description. These usually indicate a cover that won’t mess with your sleep temperature.

Do They Protect Against More Than Just Spills?

Absolutely — the best waterproof covers are multi-taskers.

A premium cover will also:

• Block dust mites, which are one of the biggest triggers for allergies and asthma
• Prevent the build-up of bacteria and mould, especially if you sweat a lot
• Help guard against bed bugs, especially if the cover is fully zippered and lab-tested

So, when you invest in a good mattress protector, you’re not just keeping out spills — you’re building a barrier against unwanted pests and allergens too.

Will a Waterproof Mattress Cover Ruin the Feel of My Expensive Mattress?

This is a totally fair concern — after all, you paid hundreds (maybe thousands) for that perfect mattress feel. So will a cover ruin that cloud-like experience?

Nope. A well-made cover shouldn’t interfere with comfort at all. In fact, most people forget it’s even there. Some premium protectors are so thin and soft that your mattress still feels exactly as it should — plush, bouncy, firm, or however you like it.

Just avoid thick, quilted protectors or anything that bunches up. Stick with snug-fitting, stretch-fabric covers that hug your mattress like a glove.

How Long Do Waterproof Mattress Covers Last — and Are They Machine Washable?

This is where buying quality pays off.

The best covers are designed to withstand frequent washing without losing their waterproof seal. Look for options that are machine washable and tumble-dry safe. Most should last 3 to 5 years (or more) with regular care.

To extend the life:

• Wash with cold or warm water, not hot
• Use a gentle cycle
• Avoid bleach or harsh detergents
• Tumble dry on low or air dry when possible

With proper care, a waterproof mattress cover can outlast your pillows — and keep your mattress looking brand new.

What About Waterproof Covers for Pillows, Duvets, Couch Seats, and Dog Beds?

It’s not just your mattress that needs protection. Sweat, spills, drool, pet accidents, and allergens don’t care where they land — which is why expanding your defence system beyond the mattress is a smart move. Let’s break it down:

Pillow Protectors

Your pillow soaks up everything from saliva and sweat to face creams and dust mites. Waterproof pillow covers form a breathable barrier that keeps all that nastiness out — while still feeling soft enough to sleep on. The best part? You can wash the cover regularly without ruining your pillow’s loft or lifespan.

Duvet Protectors

Ever tried washing a king-size doona? It’s a workout. A waterproof duvet cover saves your duvet from accidental spills, pet messes, and night sweats — no dry cleaning required. Just strip, wash, and go. Bonus: it keeps the fluff inside your quilt from clumping due to moisture.

Couch Seat Covers

Let’s be real — the couch is ground zero for snack accidents, pet drool, and toddler chaos. Waterproof couch seat covers keep the foam and fabric underneath safe from stains and smells. Perfect for families, pet owners, Airbnb hosts, or anyone who doesn’t want to replace their lounge every two years.

Dog Bed Covers

Even the best-trained pups have their moments — especially puppies, senior dogs, or those with incontinence. A waterproof dog bed cover keeps the inner foam clean and dry, even after an accident. It also helps block mites, fleas, and odours, making cleanup quick and stress-free.

Why These Extras Matter

Waterproof protection is about more than just preventing stains — it’s about health, hygiene, and long-term savings. Whether you’re dealing with allergens, incontinence, pets, or messy toddlers, waterproof covers offer peace of mind and extend the life of everything from your pillow to your pup’s bed.

Want to take your home protection to the next level? Match your mattress cover with full-coverage protection across the bedroom and living room — because every surface deserves to stay clean, dry, and fresh.

Final Thoughts: Are Waterproof Mattress Covers Worth It?

Without a doubt — yes.

A waterproof mattress cover protects your bed from stains, spills, dust mites, allergens, and even bed bugs. It keeps your mattress fresh, hygienic, and in top shape for years. And with today’s soft, breathable designs, you won’t even notice it’s there.

So if you’ve been debating whether it’s worth the money — this is your sign to grab one now. It’s one of the simplest, smartest investments you can make for better sleep and a healthier bedroom.

3 Quick Questions: Do Waterproof Mattress Covers Really Work?

Q1: Can I put a waterproof mattress cover on a memory foam mattress?
A: Yes, and it’s highly recommended to prevent moisture damage and mould growth.

Q2: Do mattress protectors shrink in the wash?
A: Good ones don’t — but always check the label and follow care instructions.

Q3: Are waterproof mattress covers noisy?
A: Not anymore. Modern covers are whisper-quiet and feel like soft bedding.

Watch Our Video Showing How Our Covers Work On Couch Seats And Dog Beds

If you have enjoyed our blog, Do Waterproof Mattress Covers Really Work?, then you might like to read about the Best Waterproof Mattress Covers.

Sources: Do Waterproof Mattress Covers Really Work?

Sleep Foundation – Best Waterproof Mattress Protectors and Pads 2025

Bensons for Beds – Benefits of Waterproof Mattress Protectors

Ideal Home – The Best Mattress Protectors: Tried and Tested