How to Make Outdoor Cushions Waterproof

If you’re someone who enjoys spending time outdoors, you know how important it is to have comfortable seating.

Outdoor cushions can make all the difference when it comes to lounging on your patio or in your backyard. However, outdoor cushions are exposed to the elements and can quickly become waterlogged, making them uncomfortable and unusable.

In this article, I’ll share with you some tips on how to make outdoor cushions waterproof, so you can enjoy your time outside without worrying about soggy cushions.

One way to make outdoor cushions waterproof is to purchase cushions that are already designed for outdoor use.

These cushions are typically made with materials that are water-resistant or waterproof, such as polyester or acrylic. However, if you already have indoor cushions that you’d like to use outdoors, there are ways to make them waterproof as well.

One DIY method for making outdoor cushions waterproof involves using a waterproofing spray.

This spray can be applied to the cushions to create a barrier that repels water.

It’s important to note that not all waterproofing sprays are created equal, so be sure to choose one that is specifically designed for outdoor fabrics.

Additionally, be sure to follow the manufacturer’s instructions carefully when applying the spray to ensure the best results.

Understanding Waterproofing

When it comes to outdoor cushions, waterproofing is essential to ensure their longevity and durability.

In this section, I will discuss the importance of waterproofing and the different types of waterproof materials that can be used.

The Importance of Waterproofing

Outdoor cushions are exposed to a range of weather conditions, such as rain, snow, and humidity.

These conditions can cause the cushions to become damp, which can lead to mold and mildew growth. Waterproofing the cushions prevents moisture from penetrating the fabric, which in turn prevents mold and mildew growth.

Waterproofing also prevents staining from spills and other liquids.

Without waterproofing, outdoor cushions are more susceptible to stains, which can be difficult to remove.

Types of Waterproof Materials

There are several types of waterproof materials that can be used to make outdoor cushions waterproof. Some of the most common materials include:

  • Waterproof spray: This is an effective alternative to Scotchguard. It is easy to apply and can be used on a range of fabrics. However, some sprays may discolor the fabric, so it is important to test the spray on a small area first.

  • Sealants: These are applied to the fabric and create a barrier that prevents moisture from penetrating. They are more expensive than waterproof sprays but are more effective in the long term.

  • Waterproof fabric: This is a fabric that is specifically designed to be waterproof. It is more expensive than regular fabric but is a good option for cushions that will be exposed to a lot of moisture.

Materials Needed

When making outdoor cushions waterproof, there are a few materials you’ll need to get the job done.

In this section, I’ll go over the two main categories of materials you’ll need: fabric and waterproofing sprays and sealants.

Choosing the Right Fabric

One of the most important factors in making outdoor cushions waterproof is choosing the right fabric.

You’ll want to look for fabrics that are specifically designed for outdoor use, as they are made to withstand the elements.

Some popular options include Sunbrella, Outdura, and Crypton.

When choosing your fabric, you’ll also want to consider factors like color and style.

Look for a fabric that complements your outdoor space and matches your personal taste.

Keep in mind that darker colors tend to show less dirt and stains, while lighter colors can brighten up a space.

Waterproofing Sprays and Sealants

In addition to choosing the right fabric, you’ll also need to use waterproofing sprays and sealants to make your outdoor cushions waterproof.

There are a variety of products on the market that can help you achieve this, including sprays, sealants, and coatings.

When choosing a waterproofing product, look for one that is specifically designed for outdoor use and is safe for the type of fabric you’re using.

Some popular options include 303 Fabric Guard, Scotchgard, and Kiwi Camp Dry.

It’s important to follow the instructions on the product carefully to ensure that you apply it correctly and achieve the desired results.

Keep in mind that some products may require multiple coats or a certain amount of drying time before the cushions can be used.

Step by Step Guide


Before starting the process of making your outdoor cushions waterproof, you will need to gather some materials.

You will need waterproofing spray, a tarp or plastic sheet to protect your work surface, and a well-ventilated area to work in.

It is important to choose the right type of waterproofing spray for your cushions.

There are various types of sprays available, including aerosol cans, pump bottles, and liquid concentrate. Be sure to read the instructions carefully before using them.


Once you have gathered your materials, you can begin the process of making your outdoor cushions waterproof.

First, lay your cushions on a tarp or plastic sheet to protect your work surface. Shake the can of waterproofing spray well before use.

Hold the can of spray about 6-8 inches away from the cushion and spray a light, even coat over the entire surface.

Be sure to cover all areas of the cushion, including the sides and edges. Apply a second coat if necessary, but avoid over-saturating the cushion.

Drying and Testing

After applying the waterproofing spray, allow the cushions to dry completely before use.

This may take several hours, depending on the type of spray and the weather conditions.

Once the cushions are dry, test them to ensure they are waterproof.

Sprinkle a few drops of water on the cushion and observe whether the water beads up or is absorbed by the cushion.

If the water beads up, the cushion is waterproof. If the water is absorbed, apply another coat of waterproofing spray and allow it to dry before testing again.

Maintenance and Care

Routine Cleaning

To keep your outdoor cushions looking their best and to prolong their lifespan, it’s important to clean them regularly.

I recommend wiping down the cushions with a damp cloth or sponge at least once a week. This will help remove any dirt, dust, or debris that may have accumulated on the surface.

For more stubborn stains, you can use a mild soap and water solution.

Mix a small amount of soap with warm water and use a sponge or soft-bristled brush to gently scrub the affected area.

Be sure to rinse the cushions thoroughly with clean water and let them air dry completely before using them again.

Reapplying Waterproofing

Over time, the waterproofing on your outdoor cushions may begin to wear off.

If you notice that the cushions are no longer repelling water like they used to, it’s time to reapply the waterproofing.

There are a few different methods you can use to waterproof your cushions, including sprays and sealants.

Be sure to choose a product that is specifically designed for outdoor use and follow the manufacturer’s instructions carefully.

One DIY hack for waterproofing outdoor cushions involves using a mixture of equal parts water and white vinegar.

Simply spray the solution onto the cushions and let it dry completely. This should help repel water and keep your cushions looking great for longer.

Potential Challenges and Solutions

Dealing with Mould and Mildew

One of the most common challenges when it comes to outdoor cushions is dealing with mould and mildew.

These can occur due to the cushions being exposed to rain and moisture.

To prevent mould and mildew from forming, it is important to choose water-resistant materials for your cushions. Alternatively, you can use a waterproof spray to help seal your cushions after you’ve sewn them.

If you do notice mould or mildew on your cushions, there are several solutions you can try.

One option is to mix equal parts of water and white vinegar in a spray bottle and spray the affected areas.

Let the solution sit for a few minutes before wiping it off with a clean cloth.

Another option is to mix a solution of one part bleach and nine parts water and use it to clean the affected areas.

Be sure to rinse the cushions thoroughly with water after cleaning.

Repairing Damaged or Worn-Out Cushions

Another challenge you may face with outdoor cushions is repairing any damage or wear and tear.

If your cushions have holes or tears, you can use a fabric patch to cover the damaged area.

Simply cut a piece of fabric slightly larger than the hole or tear, and use fabric glue to attach it to the cushion.

If your cushions are worn out and no longer provide adequate support, you may need to replace the foam inserts.

To do this, carefully remove the old foam and measure the dimensions of the cushion cover.

Purchase new foam inserts that match these dimensions, and insert them into the cushion cover.

You can also add a layer of batting or foam to the top of the cushion for added comfort.

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