Making outdoor cushions waterproof is important to help them withstand the elements and last longer. With some simple steps, you can easily add a water-resistant barrier to your cushions. This guide will walk you through the process of making outdoor cushions waterproof using different materials and techniques.

Choose the Right Outdoor Cushion Fabric

The first step is selecting an outdoor fabric that is already water-repellent or applying a waterproof coating to the fabric you want to use. Here are some good options for water-resistant outdoor cushion fabrics:

• Acrylic fabrics – Acrylic is naturally water-repellent. Look for acrylic fabrics labeled as outdoor or all-weather.
• Olefin fabrics – Olefin fibers like polypropylene are resistant to mildew, fading, and water. Brands like Sunbrella use olefin for outdoor furniture.
• Vinyl fabrics – Vinyl is waterproof and very durable for outdoor use. It’s easy to wipe clean.
• Polyester fabrics with hydrophilic coatings – Hydrophilic coatings cause water to bead up on contact, preventing absorption.

No matter what fabric you choose, make sure it is specifically designed for outdoor use. The fabric should be mold, mildew, and UV ray resistant.

Apply a Waterproofing Spray

One easy way to waterproof fabric is by using a spray-on waterproofing treatment. Here are some options:

• Scotchgard Outdoor Fabric Water Shield – This clear spray adds a protective barrier against water and sun damage. Reapply every year.
• Kiwi Camp Dry Heavy Duty Water Repellent – Formulated for tents and outdoor gear. Provides long-lasting water protection.
• 303 Fabric Guard – Contains UV blockers. Helps prevent fading and mildew as well as waterproofing.

To use a fabric guard spray:

1. Clean the fabric according to its care instructions. Remove any dirt or debris.
2. Lay the fabric flat and apply the spray in a well-ventilated area. Apply a light, even coat and let it dry fully.
3. Apply a second coat for maximum protection. Let it dry completely.
4. Reapply as needed per the product instructions, usually once per year.

Use a Waterproof Backing

Adding a waterproof backing to the underside of the cushion is an effective way to make the entire cushion water-resistant. Here are some options:

Plastic Backing

• Cut a piece of clear plastic in the shape of the cushion. Secure to the underside with strong adhesive.
• Plastic tablecloths can also be used. Attach it neatly with spray adhesive.
• The plastic blocks rain and sprinklers from soaking into the cushion.

Acrylic Backing

• Purchase outdoor acrylic canvas in a complementary color. Glue it to the back of the cushion.
• The acrylic repels water while letting the cushion breathe. It also adds stability.

Waterproof Fabric

• Vinyl, acrylic or polyester fabric intended for outdoor use can be attached as a backing.
• Use fabric glue or stitch around the edges to hold the backing in place.

Use Water-Resistant Cushion Fillers

Choosing cushion fillers designed for outdoor use is also key in waterproofing. Here are good options:

• Polyester Fiber Fill – Polyester is moisture-resistant and dries quickly if it does get wet. It resists mildew.
• Polyester Batting – Polyester quilt batting makes a water-resistant cushion filler. It’s machine washable.
• Closed Cell Foam – Foam like polystyrene or polyethylene is waterproof. It’s very buoyant and quick-drying.
• Polyester Hollowfill – This polyester fiber fill has air pockets that allow water drainage.

No matter what cushion filler you select, be sure it is intended for outdoor cushion use. Avoid fillers like cotton or down that absorb moisture.

Use a Waterproof Cushion Cover

For added protection, cover the cushion with a waterproof cushion cover when not in use. Here are options:

• Vinyl covers – Clear vinyl covers are completely waterproof. They have zipper closures.
• Polyester covers – Coated polyester covers repel water. Look for ones treated to resist UV rays.
• Water-resistant fabric covers – Use the same outdoor fabrics from the cushions to sew removable covers.

Make sure to get cushion covers appropriate to the size and shape of your cushions. Round covers work well for round and square cushions.

Reapply Waterproof Coatings Yearly

For continued water resistance, remember to reapply any waterproof sprays or coatings as the manufacturer recommends, usually once per year. Reapplication helps replenish any protection that wears off due to sun exposure, cleaning or use.

How to Clean Waterproof Outdoor Cushions

Proper cleaning is important for maintaining the waterproofing on outdoor cushions. Here are some tips:

Shake off dirt and debris – Regularly shake off any dirt, leaves or other debris so it doesn’t become embedded in the fabric.

Spot clean spills – Immediately wipe up any spills before they have a chance to soak in using a damp cloth with mild soap if needed.

Rinse with water – For light cleaning, spray the cushions with water and rinse away dirt. Air dry.

Brush off dried dirt – Use a soft brush to remove any caked on dirt while the cushion is dry. Avoid abrasive scrubbing.

Check care instructions – If thorough cleaning is needed, check the fabric’s care label. Many outdoor fabrics can be machine washed on gentle, then air dried.

Disinfect periodically – Use an outdoor fabric disinfectant to kill mold or mildew. This can help prolong the water resistance.

Protect in storage – Store cushions in a covered, dry place like a shed or garage over winter or when not in use. This prevents dust and debris buildup.

Avoid using harsh cleaners or scrubbing aggressively at stains as this could break down waterproof coatings. With regular light cleaning and proper care, waterproof outdoor cushions can look like new season after season.

Tips for Maximizing Waterproofing on Outdoor Cushions

Here are some additional pointers to get the most out of waterproof outdoor cushions:

• Use jacket zippers on cushion covers to make them fully removable for washing and re-waterproofing as needed.
• Opt for darker colored fabric which hides scratches and stains better than light colors.
• Select smooth, tightly woven outdoor fabrics which are easier to wipe clean.
• Go for printed patterns over plain fabric since prints hide discoloration that can occur over time.
• Look for fabric with bound edges rather than frayed edges to prevent loosening.
• Choose welted seams which have tightly sewn corners that repel water better than traditional seams.
• Upgrade to marine grade vinyl fabric for cushions that will be in direct sun and rain.
• Buy extra fabric when making cushions to use later for repairs or replacements.
• Store cushions upright on their side rather than laying flat to allow air circulation and drainage.
• Bring cushions indoors during extreme weather or winter freezing to extend their life.
• Hand wash cushions every few months to restore water resistance and refresh.

Investing a little extra effort into proper materials and care will ensure your outdoor cushions stay like new for many seasons of use.

Frequently Asked Questions About Waterproof Outdoor Cushions

Q: How often should you reapply waterproof coatings to outdoor cushions?

A: Waterproof fabric sprays and coatings should typically be reapplied about once per year or according to the manufacturer’s recommendations. Reapplying helps replenish any protection that wears off from sunlight, cleaning and normal use.

Q: Can you put outdoor cushion covers in the washing machine?

A: It depends on the material. Always check the tag first. Some vinyl or polyester covers can be machine washed on gentle and air dried. Covers should be removed from cushions before washing.

Q: What is the best way to dry outdoor cushions after cleaning?

A: It’s best to let cushions air dry naturally after cleaning. Lay them flat or stand them on end to dry. Avoid using a clothes dryer which could damage the fabric or coatings.

Q: How do I repair small holes or rips in outdoor cushions?

A: Use an outdoor adhesive patch kit made for repairing holes, rips or seams in outdoor fabrics and vinyls. Apply to the backside of the damage. Larger repairs may need professional patching.

Q: What causes mold and mildew to form on outdoor cushions?

A: Mold and mildew grow from moisture buildup. Keep cushions dry between uses. Disinfect with a mild bleach solution if mold appears and let air dry fully in sunlight.

Q: Can I use car detailing sprays or seals to waterproof outdoor furniture?

A: It’s best to use sprays made specifically for outdoor fabric use which contain UV blockers. Automotive products may wear off quickly or damage fabric.

Conclusion

Making cushions waterproof is essential for outdoor use and easy to achieve. By selecting the right fabrics, apply coatings, using water-resistant fillers and proper care, you can have outdoor cushions that withstand the sprinklers, rain, sun and moisture for many years. Proper maintenance will keep them looking fresh season after season.

With the right materials and techniques, you can save money on replacing outdoor cushions frequently and enjoy your cushioned outdoor living spaces without worrying about water damage. Spending time outdoors on comfortable, waterproof cushions can make your yard the ultimate relaxation destination.