How to Waterproof an Outdoor Storage Bench

An outdoor storage bench is a useful piece of furniture. You can sit on it and also store items inside. People use it in gardens, patios, or balconies. It is great for keeping tools, cushions, toys, or gardening supplies.

But there is one problem. Since the bench stays outside, it faces rain, sun, and wind. Water can damage the bench. It can also ruin the things stored inside.

To keep your bench safe and dry, you need to waterproof it. This article will show you how to do it in a simple way.

Why Waterproofing Is Important

Water can cause a lot of damage to outdoor furniture:

• Wood can rot and break.

• Metal parts can rust.

• Mold and mildew can grow inside.

• Stored items can get wet or ruined.

Waterproofing helps the storage bench last longer. It also protects the things you keep inside.

What You Will Need

Before you begin, gather some tools and supplies:

• Sandpaper or sanding block

• Waterproof wood sealer or paint

• Paintbrush or roller

• Caulk or silicone sealant

• Waterproof cover or tarp (optional)

• Screwdriver (if you need to remove parts)

• Clean cloth or sponge

• Gloves and mask (for safety)

If your bench is made of plastic or metal, the process is a bit different. But many of the steps are the same.

Step 1: Clean the Bench

First, clean the bench well. Remove all items from inside. Use a cloth or sponge to wipe off dirt, dust, and old stains. If the bench is very dirty, use soapy water.

Let the bench dry completely before moving to the next step.

Step 2: Sand the Surface (For Wooden Benches)

If your bench is made of wood, sanding is important. Sanding smooths the surface. It also helps the waterproof coating stick better.

Use sandpaper or a sanding block. Rub gently over the wood. Remove old paint, splinters, or rough spots.

After sanding, wipe the bench with a dry cloth to remove dust.

Step 3: Seal Cracks and Gaps

Check the bench for any cracks, holes, or open joints. These can let water inside.

Use caulk or silicone sealant to fill the gaps. You can find waterproof sealants at hardware stores. Apply it with care. Smooth it with your finger or a tool.

Let the sealant dry for a few hours. Follow the drying time on the label.

Step 4: Apply Waterproof Sealer or Paint

Now its time to waterproof the bench. You can use:

• Clear waterproof wood sealer (keeps the natural look)

• Waterproof outdoor paint (adds color and protection)

• Wood stain with waterproof finish

Use a paintbrush or roller. Start with one thin coat. Let it dry as per the product label. Then add a second coat for extra protection.

Make sure you cover every parttop, sides, legs, and bottom. Dont forget the inside of the bench too.

Let the bench dry fully before using it again.

Step 5: Line the Inside (Optional)

For extra protection, you can line the inside of the bench. Use waterproof fabric, plastic sheet, or rubber mat.

Cut the material to fit the inside. Use glue or tape to stick it down.

This will help protect stored items from any leaks or moisture.

Step 6: Use a Waterproof Cover

Even after sealing, its good to cover the bench when it rains heavily. A waterproof bench cover or tarp is useful.

You can buy a ready-made cover or use a strong plastic sheet. Make sure it fits well and covers the whole bench.

Tie it down or use weights to keep it in place.

Step 7: Check Regularly

Waterproofing is not a one-time job. Over time, the seal can wear off.

Check your bench every few months. Look for cracks, peeling paint, or signs of water damage.

If needed, sand and reseal the bench again. This will help it last for years.

Tips for Different Materials

For Wooden Benches:

• Always seal the wood before the rainy season.

• Avoid placing the bench directly on wet ground.

• Raise the bench slightly with rubber feet or bricks.

For Metal Benches:

• Use rust-proof paint or spray.

• Check for rust spots and clean them quickly.

• Use a clear coat to protect the metal.

For Plastic Benches:

• Plastic does not absorb water, but it can still get moldy.

• Keep it clean and dry.

• Store in shade to avoid sun damage.

Protecting the Contents Inside

Its also important to keep the items inside the bench dry.

Here are some ideas:

• Store items in waterproof storage boxes or bags.

• Use moisture-absorbing packets or silica gel inside.

• Keep the inside organized and not overfilled.

• Dont store paper, electronics, or delicate items unless well protected.

Common Mistakes to Avoid

• Skipping cleaning before sealing. Dirt prevents good sealing.

• Using indoor paint or sealer. Always choose outdoor-grade products.

• Not sealing the bottom of the bench. Water can enter from below.

• Storing wet items inside the bench. They can cause mold.

• Leaving the bench in water. Always place it in a dry, raised area.

How Often Should You Waterproof?

Waterproofing lasts about 6 to 12 months, depending on the weather and use.

If your area gets a lot of rain or snow, reapply sealer twice a year.

Check after every season. If the bench looks dry, faded, or worn, its time to seal again.

Benefits of Waterproofing

Waterproofing your bench has many benefits:

• Longer life: Your bench lasts for many years.

• Better look: The bench stays clean and fresh.

• Dry storage: Items inside stay safe and dry.

• Less damage: Fewer repairs or replacements needed.

• Saves money: A well-kept bench wont need to be replaced soon.

Final Thoughts

A storage bench is a handy and helpful outdoor item. But without care, rain and water can damage it. Thats why waterproofing is important.

By cleaning, sealing, and covering your bench, you can protect it from the weather. You also keep your stored items safe and dry.

The process is simple and can be done at home. Just follow the steps, use good materials, and check regularly.

With a little time and care, your outdoor storage bench will stay strong and useful for many years.