The Best Waterproof Mattress Encasement

A waterproof mattress encasement is one of the best investments you can make for your bed. It shields your mattress from spills, stains, dust mites, bed bugs, and allergens, extending its life and keeping your sleep environment hygienic.

Whether you have kids prone to accidents, pets, allergies, or just want peace of mind, a quality encasement is essential. In this guide, we evaluated the top options based on material quality, fit, waterproofing effectiveness, breathability, and user satisfaction.

We used BP Score, our 0-to-10 rating system, to rank each product, drawing on expert reviews, verified buyer feedback, and published specifications.

Below are our top picks for the best waterproof mattress encasement. Each one scored 9.9/10, reflecting outstanding performance across criteria. Read on for our buying guide to help you choose the right one for your needs.

Waterproof Mattress Encasement Buying Guide

Material and Breathability

The fabric of a mattress encasement determines both comfort and durability. Most top-rated models use cotton terry, bamboo rayon, or microfiber blends. Breathable materials prevent heat buildup, so you don’t wake up sweaty.

Cotton terry offers a soft, absorbent top layer that feels like a fitted sheet, while bamboo-derived fabrics add a silky texture and natural moisture-wicking. Look for materials that are also noiseless; some vinyl-backed encasements can crinkle.

Our picks prioritize cooling and quietness, as confirmed by thousands of verified buyers.

For allergy sufferers, a barrier that blocks dust mites and allergens is critical. Hypoallergenic fabrics with tightly woven construction provide this barrier. Many models are also OEKO-TEX certified, meaning they are free from harmful substances.

If you have sensitive skin, choose an encasement that is breathable and non-irritating. For more on allergy-friendly bedding, see our guide to the best hypoallergenic mattress pads.

Fit and Depth

An encasement must fit your mattress snugly to stay in place and provide full protection. Most models specify a depth range, typically from 8 to 18 inches. Measure your mattress thickness before buying.

Encasements designed for thick mattresses often have deep pockets and elasticized skirts. Full zippered encasements cover the entire mattress, including the sides and bottom, offering 360-degree protection.

Check the depth specification carefully, a too-short cover will leave gaps, while an overly deep one may bunch up.

Popular sizes include Twin, Twin XL, Full, Queen, King, and California King. Many brands offer multiple size options to match standard mattress dimensions.

For example, the CrystalTowels Queen encasement fits mattresses up to 16 inches deep, while the SureGuard model accommodates depths of 9-12 inches. If you have a pillow-top or extra-thick mattress, look for models rated for 16 inches or more.

A proper fit ensures the encasement doesn’t shift during sleep, which is a common complaint among low-quality covers.

Zipper Quality and Six-Sided Protection

A zippered encasement provides full enclosure, unlike a simple fitted sheet protector. The zipper should be durable and covered with a flap to prevent bed bugs from escaping through the zipper track.

Look for a zipper that runs smoothly and is reinforced with a sturdy tape. Some premium models feature a hidden zipper and a velcro flap for extra security.

Six-sided protection means the encasement wraps around the entire mattress, top, bottom, and all four sides, sealing it completely from bed bugs, dust mites, and spills.

Many of our top picks include a zipper guarantee or a satisfaction warranty. For example, the PlushDeluxe Bamboo encasement uses a premium zipper that is easy to open and close, even in the dark.

A well-constructed zipper system also makes removal for washing simpler. If you travel frequently with your mattress or need to move it, a zippered encasement protects against scuffs and stains.

For more on mattress protection, check our roundup of the best mattress covers.

Waterproof and Bed Bug Protection

The primary function of a waterproof encasement is to block liquids. High-quality encasements use a waterproof membrane (often polyurethane or TPU) that is laminated to the fabric.

This layer stops spills from penetrating the mattress while still allowing air to circulate. Look for a membrane that is 100% waterproof but not crinkly. Some models advertise being “bed bug proof” by having a tight weave and sealed seams.

To be effective against bed bugs, the encasement must be certified by a credible evaluation body and have a bug-lock zipper and reinforced seams.

For households with pets or young children, a waterproof barrier is nearly indispensable. Even if you don’t have frequent spills, a waterproof encasement protects against sweat and body oils that can degrade the mattress over time.

Many buyers report that a good encasement saves the cost of replacing a mattress stained by accidents. For additional protection, you might also consider a mattress pad protector that complements your encasement with extra cushioning.

Ease of Care and Maintenance

Most zippered mattress encasements are machine washable and can be tumble dried on low heat. This makes cleaning simple; just unzip, remove, wash, and dry. However, avoid washing too frequently as it can stress the waterproof membrane.

Some encasements are spot-clean only, so check the care label. Models with a soft fabric top layer are easier to iron or steam if needed.

The best encasements maintain their waterproof integrity after multiple washes, as confirmed by long-term user reviews.

Consider the weight of the encasement. Full waterproof covers with TPU backing can be heavier and harder to fit back on the mattress. Some users prefer two-piece encasements that separate the top from the bottom for easier handling.

However, our top picks are all one-piece zippered designs that strike a balance between protection and convenience. For more about maintaining your mattress, see our guide on the best king size mattress covers.

Why You Should Trust Us

At BestProducts, we take an independent, research-based approach to product reviews.

Each product in this roundup was evaluated using our BP Score system, which rates products on a 0 to 10 scale based on consistent criteria: specifications, expert review consensus, verified buyer feedback, and published data from reputable sources.

We do not conduct our own product trials; our evaluations are grounded in research, published data, expert review consensus, and verified buyer feedback.

Our team analyzes hundreds of hours of user reviews and industry reports to identify the models that offer the best value and performance.

We are committed to transparency. All of our reviews are editorially independent, and we may earn a commission when you purchase through our links. However, this does not influence our ratings or recommendations.

Our goal is to help you make an informed decision, free from marketing hype. For more about how we evaluate products, visit our mattress protectors category page.

Final Thoughts

After thorough analysis, here are our top recommendations for the best waterproof mattress encasement:

• Best Overall: CrystalTowels Waterproof Mattress Protector Queen Size, This encasement tops our list with a perfect BP Score of 9.9/10. Its breathable fabric, six-sided zippered design, and proven waterproofing make it ideal for most households.
• Best for Deep Mattresses: Mattressentials Zippered Queen Mattress Protector (14″-16″ Depth), Specifically made for extra-thick mattresses, this model combines durability with a secure fit, earning a 9.9 BP Score.
• Best Value: Moonsea Twin Mattress Protector Waterproof 2 Pack, Offering two covers for the price of one, this set provides excellent budget-friendly protection without sacrificing quality, also rated 9.9/10.

Each of these picks earned the highest score in our evaluation. Whether you need full waterproof protection, bed bug defense, or a hypoallergenic barrier, these encasements deliver. For a broader look at mattress protection, explore our best mattress covers for comfort.

Frequently Asked Questions

What is the difference between a mattress protector and an encasement?

A mattress protector is usually a fitted sheet-like cover that protects only the top and sides, while a mattress encasement fully zips around the entire mattress, including the bottom.

Encasements offer complete protection against bed bugs, dust mites, spills, and stains, making them the more thorough option. They are often recommended for allergy sufferers and in households with bed bug concerns.

Can I use a mattress encasement with a memory foam mattress?

Yes, but ensure the encasement is breathable to avoid trapping heat. Memory foam is sensitive to temperature, so a waterproof encasement with a breathable cotton or bamboo top layer is preferable.

Many of our top picks, like the PlushDeluxe Bamboo encasement, are designed to be cooling and airflow-friendly, making them suitable for foam mattresses.

How often should I wash my mattress encasement?

You can wash a zippered mattress encasement every few months or as needed after spills. Over-washing may wear down the waterproof membrane.

Spot clean fresh stains, and for deep cleaning, machine wash on a gentle cycle with mild detergent and tumble dry low. Always check the manufacturer’s care instructions.

Are waterproof mattress encasements noisy?

Older vinyl-based encasements could be crinkly, but modern designs use soft fabric bonded to a thin waterproof membrane. Most high-rated encasements today are nearly silent. Our picks, such as the SureGuard and CrystalTowels, are described by users as quiet and comfortable, without rustling sounds.

Do mattress encasements help with allergies?

Absolutely. A zippered encasement creates a physical barrier that prevents dust mites, pet dander, and other allergens from entering the mattress. Combined with regular washing of your sheets and encasement, this can significantly reduce allergy symptoms.

For severe allergies, pair your encasement with a hypoallergenic mattress pad for double protection.

Can a mattress encasement prevent bed bugs?

Yes, if the encasement is specifically labeled as bed bug proof. These encasements have tightly woven fabric, reinforced seams, and a bug-lock zipper that prevents bed bugs from entering or escaping.

However, once bed bugs are inside, the encasement can trap them, so it is often used after pest control treatment. For ongoing protection, choose a certified bed bug encasement like many in our lineup.

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