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How to Waterproof a Mattress for Outdoors

Daybeds are perfect for lounging outdoors in style. They can add to your exterior décor and provide a cool spot for relaxing on warm days.

It’s no surprise that many people including myself want to have them on their patios, in tree houses, or near the pool. However, outdoor furniture is often expensive and you may end up abandoning your dreams of getting a beautiful, comfortable outdoor space.

Furniture placed outside is likely to get at least a little wet and as you probably know, mattresses absorb moisture easily.

The wet sponge then becomes a haven for mildew, fungus, and mold. Because of this, you will need a waterproof mattress for your daybed and it all comes down to the budget you have

If you want a long-term permanent solution, go with an outdoor mattress.

If you want to save some money, waterproof an ordinary mattress using simple materials. Not only is this option cheaper, but you can choose the exact texture and style of fabric you want. Whether you want beach club-style luxury or a more rustic vibe, you can create it.

Read our post about how to waterproof a mattress for outdoors – and find three outdoor mattress options after that.

Top 4 Options for Waterproofing a Mattress

Here, we explore the four most common ways how to waterproof a mattress for outdoors.

Waterproof Mattress protector

If you don’t like the look of your mattress but you don’t want to make a cover, you can purchase a waterproof mattress protector like the ones below.

The protectors fit a mattress that is 8-9″ thick, has a heavy-duty zipper, and comes in 5 colors. The sizes vary from Twin to Double/Full.

Grey Canvas Zip On Fabric Mattress Cover
Navy Blue Canvas Zip On Fabric Mattress Cover
Black Canvas Zip On Fabric Mattress Cover
Sunbrella Twin Size Mattress Cover in Canvas Cadet Grey SJA 5530 for Outdoor Daybed Porch Bed Swing Zips On Water Resistant Fabric
Sunbrella Outdoor Twin Size Mattress Cover in Canvas Navy Blue 5439
Sunbrella Twin Size Black Outdoor Canvas 4608 Fabric Zip On Mattress Cover for Porch Bed Daybed Swing Water Resistant Fabric
Standard Twin
Standard Twin
Standard Twin
8-9" thick
39'' x 75'' x 8”
39'' x 75'' x 8”
Grey Canvas Zip On Fabric Mattress Cover
Sunbrella Twin Size Mattress Cover in Canvas Cadet Grey SJA 5530 for Outdoor Daybed Porch Bed Swing Zips On Water Resistant Fabric
Standard Twin
8-9" thick
Navy Blue Canvas Zip On Fabric Mattress Cover
Sunbrella Outdoor Twin Size Mattress Cover in Canvas Navy Blue 5439
Standard Twin
39'' x 75'' x 8”
Black Canvas Zip On Fabric Mattress Cover
Sunbrella Twin Size Black Outdoor Canvas 4608 Fabric Zip On Mattress Cover for Porch Bed Daybed Swing Water Resistant Fabric
Standard Twin
39'' x 75'' x 8”

These covers are made by the famous brand Sunbrella that is well-known for their outdoor textile. Some of the qualities of Sunbrella fabric include:

  • water and UV resistant
  • breathable
  • air-dries very quickly
  • fade and stain resistant
  • machine washable and dry-able
  • will not mildew

The protector covers your mattress from all sides including the bottom. It zips on over your mattress and fully encases it.

Waterproof Sheets

A more budget-friendly alternative to a waterproof mattress cover is waterproof sheets.

For example, this one below comes in a form of fitted bed sheets. You can choose from four sizes: Twin, Full, Queen, King. It also comes in 6 different colors and has a 10-year warranty.

Waterproof Fitted Sheet Matress Protector, 100% Microfiber
  • 100% Waterproof: Mecerock Mattress Protector Protects your expensive bed mattress from all liquids including body...
  • Quiet & Comfortable: The waterproof mattress cover is super soft, light and comfortable and it naturally absorbs fluids...
  • Fitted Sheet Style & Fit Perfectly: Looks like Fitted sheet, it has elastic and bands attached to your bed, and not...

While plastic encasings can also be an option; however, these aren’t very comfortable, and they can be noisy and unattractive.

Look for a modern alternative that offers a cozy, comfortable top layer and a waterproof layer below. Some are even specifically designed to encourage airflow so you remain cool on hot days.

Waterproofing Spray

If you want to make your mattress waterproof with as little effort as possible, get a waterproofing spray.

All you need to do is place the mattress outside and lightly spray the entire surface.

Make sure you hold the can six to eight inches away from the fabric to ensure even coverage. Let each pass overlap slightly to ensure you don’t leave out any spots. The fabric does not need to be saturated so don’t overuse the spray.

After applying, allow the mattress to dry for about four hours and then apply a light second coat.

Once this dries, test the mattress with a little water. 

If the water beads up on the surface but doesn’t soak through, you’ve done your job. The next time it rains or you spill a drink, all you need to do is wipe off the liquid. The mattress will be well protected.

Some waterproofing sprays also protect from sun damage so you’ll be even better able to maintain the mattress.

DIY Waterproof Cover

Another option is to cover the mattress with waterproof fabric. It can be a fun DIY activity.

Since the key to maintaining an outdoor mattress is ensuring it is protected from moisture, humidity, and sunlight, you will need to choose fabrics that can withstand a range of elements. Fabric stores should have a range of waterproof poly-blends from which you can choose.

The fabric below comes in 13 colors and is perfect for this project.

No products found - check back later!

Here’s what you need to do:

  1. Measure the mattress
  2. Cut the fabric accordingly
  3. Get crafty! Use fabric glue or use a sewing machine to put the cover together

This can be a fun DIY activity for a family!

Other Ways to Protect Your Outdoor Mattress

Where you place your mattress is also important.

Despite your best efforts, a bed that is completely exposed to the elements won’t last as long as one indoors.

If you have a partially enclosed gazebo, porch, or deck, you should be storing the mattress there when it is not in use. Keep it covered with a thick mattress cover. That way, it is protected from moisture, rain, and snow. If you leave it out, you may not be in time to remove it when bad weather threatens. It is better to be safe than sorry.

Garages, pool houses or sheds are also great for storage if you will only be using the mattress on special occasions. It may take a little more effort to move it after each use, but it will last a lot longer. At the very least, lean the mattress again the wall of an enclosed porch during bad weather.

If you have your mattress in a cabin or treehouse, you also need to keep it covered. If you can, keep it away from any openings in the structure. Alternatively, you can try to close up the spaces when the area is not in use. You also need to keep out bugs that can chew through the plastic covering and undo all your hard work. A mesh screen can keep most of them out.

Maybe your daybed is an integral part of your outdoor décor and you want to have it out at all times. If so, consider installing a pop-up canopy or even a regular hardtop gazebo to house it.

You can even get outdoor curtains to add some extra elegance while adding even more protection from mold and mildew.

When you take these steps, you can relax knowing that your mattress won’t be damaged by moisture and its life will be extended.

How to waterproof a mattress for outdoors: an outdoor bed

Waterproofing an ordinary mattress is a fun little project you can try out. If you don’t have time to do it, you can always purchase an outdoor mattress that has been waterproofed for you

I’ve been on a quest to find the best mattress for outdoor daybed. Classic Brands daybed mattress  stands out in particular because of its comfy gel memory foam and beautiful French tufting.

Keep on reading to find out what other mattresses I’ve picked. 

3 Of The Best Waterproof Outdoor Mattress Reviews

Classic Brands Outdoor Waterproof French Daybed Mattress – Best Waterproof Outdoor Mattress

  • 39" W x 75" L x 5" H
  • French mattress style of hand-rolled edges and buttonless tufting
  • Waterproof lightweight but durable polyester fabric
  • Made of durable waterproof polyester fabric 
  • Gel memory foam provides great support to comfort ratio 
  • Elegant design with hand-rolled edges and tufting on both sides 

This Classic Brands outdoor daybed mattress has earned my top spot because of its impervious design made for the outdoors.  

It is made of durable waterproof polyester fabric cover that successfully repels moisture. Feel free to use this mattress on your patio or under your pavilion. You can create a comfy spot in your backyard that will give your bed some competition. 

It is made of layers of gel memory foam, memory foam, and soft poly foam. Such build offers enough support and comfort for a good rest. 

This 5-inch thick mattress looks just as pretty as it is functional. The delicate French design will soften the look of the hardwood exterior of your patio. 


  • Waterproof polyester fabric
  • Lightweight and durable
  • Comfy gel memory foam
  • Elegant French design


  • It may not fully expand to 5 inches

Berocia SUV Portable Camping Outdoor Air Mattress – Best Portable Outdoor Mattress

  • Super comfortable: exquisit flocking surface, THICKENED desgin, 6P pure environment-friendly PVC material with CE RoHs...
  • Fast inflation and deflation & 300kg(661 pounds) Capaciy: this car air mattress is with newest special air tap,...
  • It has 3 seperate air bags, fold the last bag, it becomes a rear seat air bed. Also it is 25 Below Zero cold-resistant...
  • Portable lightweight design suitable for cars, SUVs, and outdoor activities
  • Flocked surface and wave design offer comfort and balance 
  • Has 3 separate airbags for a better fit 

This Berocia air mattress is an ingenious invention that might just complete your patio. 

It is suitable for outdoor use since it is made of CE RoHs certified PVC material that is water and cold-resistant. You can safely use it in your backyard or take it on your next camping trip. 

What makes this air mattress stand out from the rest is its flexible design that can fit most cars and SUVs. It has 3 separate airbags you can inflate or fold to fit in the rear seat of your vehicle. 

The air pump with a copper core and 2-meter line allows you to quickly set up your inflatable bed. It comes with a car and home charger, which is a big plus. 

Unlike other air mattresses, this one doesn’t have a bad plastic odor that will disturb your sleep or make you feel nauseous.


  • Flexible design fits most cars
  • 25 below zero cold-resistant
  • Copper core air pump
  • Car and home charger included Ergonomic wave design 


  • Few buyers complained about air leaking  
  • May not hold more than one person

Intex Comfort Plush Elevated 22-Inch Airbed – Best Value Outdoor Mattress

  • Approximate inflation time 4 3/4 minutes
  • The sleeping surface is covered in soft flocking for extra comfort, and the indented sides keep your fitted sheets from...
  • The convenient hand carry bag is perfect for storage and transport
  • Offers premium features at an affordable price
  • Soft velvety surface enhances resistance to abrasion 
  • Interior support beams offer strength, stability, and durability

Ever dreamed of having an outdoor bed? You can make your dreams come true with this Intex air mattress that won’t break the bank. 

This queen-sized air mattress is 22-inches high like a standard bed. It has a plush sleeping surface that adds a layer of comfort and protection against punctures. Its velvety exterior with indented sides prevents fitted sheets from slipping. 

The airbed is made of thousands of polyester fibers. They work together to create a strong and yet comfortable bed. 

It inflates in less than five minutes with the use of a practical internal electric pump. Best of all, you can take it to go with the handy carry bag that is included with the product. 


  • Plush exterior for comfort
  • True bed height
  • Strong Dura-Beam construction
  • 600 lb weight capacity
  • Internal electric pump
  • Carry bag included 


  • A few buyers complained about air leaking    
  • Could be more comfortable

How To Buy The Best Waterproof Outdoor Mattress

Gel Memory Foam Vs Air Mattress: Which One Is Better? 

Buying an outdoor mattress can be overwhelming since there are many types to choose from. Today, I will focus on gel memory foam and inflatable mattresses. 

Let’s look at their pros and cons. 

Gel Memory Foam

Gel memory foam has better temperature regulation than other foams. It does not trap heat but offers a cooling effect, which makes it ideal for outdoor use. The open cell structure also makes it more breathable

Keep in mind that a gel-infused mattress costs more and the cooling effect may not last throughout the whole night.

Air Mattress 

air matress for camping outdoors

Air mattresses also offer temperature stability. It will keep you cool as long as you keep it in the shade. The plastic can overheat in the sun. 

The biggest advantage of an air mattress is its portability and easy storage

Don’t have enough garden chairs for your unexpected guests? Simply inflate an air mattress for a casual get-together. 

On the downside, this air mattress is prone to leaks. The punctures tend to first appear at the seams. 

Benefits Of Buying A Waterproof Outdoor Mattress

Here are some of the benefits of buying a waterproof outdoor mattress instead of making one:

  1. Made for outdoor use
  2. Ready for immediate use
  3. Should last you longer 
  4. Waterproof spray and cover not needed
  5. No accidental water absorption 
  6. Some are covered by warranty 

Best Mattress For Outdoor Daybed Is …

The clear winner of my review roundup is the Classic Brands daybed mattress .

I have picked it because it looks like a classic mattress while being waterproof. It is partly made of cooling gel memory foam, which is ideal for outdoor use during the summer. 

Unlike the air mattresses on my review list, this one will make your patio look classy. The French tufting and hand-rolled edges are small details that make all the difference.  

The runner up worth mentioning is the Intex air mattress . This one lets you create a bedroom experience under your pavilion. Its gray-toned velvety exterior adds to the comfort that can be easily amped up with few tricks.

Making Your Newly Waterproof Mattress More Comfortable 

Once you have a waterproof mattress and a plan for keeping it away from the elements, you can get more creative.

You can turn your attention to sheets and pillows or throw cushions.

Add some Egyptian cotton sheets to make the space even more comfortable. These soft, high-thread-count sheets create a luxurious hotel-like experience right at your own home. You just need to remember to remove them after use and take good care of them.

You can also add colorful pillows or throw cushions to liven up space.

As with the mattress, you will have to waterproof them or only put them outside when you will be using them. You can even make your own accents if you want full control over your new outdoor haven.

How To Waterproof A Mattress For Outdoors: Final Words

At first glance, it may seem difficult to waterproof a mattress for outdoor use.

However, as you can see, it can be as simple as using a spray and keeping the mattress away from the elements wherever possible.

You can make your own mattress covers and fully personalize the bed alongside your pool or in your cabin or tree house.

We hope our post “How to waterproof a mattress for outdoors” was helpful for you. Let us know what you think in the comments!

4 Best Ways To Waterproof An Outdoor Mattress Infographic

About The Author

  • Sebastian Morales

    Sebastian Morales is the Founder and CEO of Good & Bed. Prior to Starting Good & Bed, Sebastian was an investment banker based in New York City.

Last update on 2024-06-19 at 12:46 / Affiliate links / Images from Amazon Product Advertising API

Photo of author

About The Author

Asmat Ullah

Sebastian Morales is the Founder and CEO of Good & Bed. Prior to Starting Good & Bed, Sebastian was an investment banker based in New York City.

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