Best Ways to Protect Your Plastic Pool From Sun Damage

If you own a plastic pool—whether it's an inflatable kiddie pool or a hard plastic backyard model—you probably enjoy the fun and convenience it offers during the hot summer months. However, one issue many pool owners face is sun damage. Over time, the sun’s UV rays can degrade plastic, causing it to crack, fade, become brittle, and even leak.

This comprehensive guide will walk you through the best ways to protect your plastic pool from sun damage, ensuring your investment lasts longer and performs better throughout the season.

Why Sun Damage Happens

Plastic pools are made of materials like PVC (polyvinyl chloride) or polyethylene. While these materials are durable and waterproof, they are not naturally UV-resistant. Prolonged exposure to the sun can break down their molecular structure, leading to:

• Color fading

• Surface brittleness

• Cracking and tearing

• Air or water leaks

• Overall structural weakness

UV degradation happens gradually, and if not prevented, it can reduce the lifespan of your pool by years.

Signs Your Plastic Pool Is Damaged

Before we dive into prevention methods, it's helpful to know what to look for. Here are some common signs of sun damage:

• Faded color: The original bright blue or green shade has dulled or turned white.

• Cracking: Visible lines or cracks appear, especially on the pool’s rim or floor.

• Brittle feel: The plastic feels stiffer and less flexible than before.

• Leaks: Water escapes even when there’s no visible puncture.

• Air loss: Inflatables deflate faster than usual.

If you notice these signs, it’s time to either protect the pool more effectively or consider replacing it if the damage is extensive.

Best Ways to Protect Your Plastic Pool

1. Use a UV-Resistant Pool Cover

A UV-resistant cover is your first line of defense. These covers block most of the sun’s harmful rays and help retain water temperature as well.

Benefits:

• Prevents debris buildup

• Reduces evaporation

• Shields from UV damage

Make sure to buy a cover that fits snugly and is made of high-quality polyethylene or vinyl with UV inhibitors.

2. Apply UV-Protectant Spray

There are sprays specifically designed to protect plastic from UV rays. These sprays form a protective layer that absorbs UV radiation and prevents plastic degradation.

How to use:

• Clean the surface of the pool

• Spray an even coat of UV protectant

• Let it dry before use

• Reapply every few weeks

Products like 303 Aerospace Protectant or TriNova UV Protectant Spray work well for plastic surfaces.

3. Place the Pool in a Shaded Area

Positioning your pool in a naturally shaded spot, like near a tree, fence, or wall, helps reduce the intensity of direct sunlight. Even partial shade can cut down UV exposure by 30-50%.

Tip:
Make sure the shaded area still allows enough open space to enjoy and supervise swimming safely.

4. Use a Pop-Up Canopy or Shade Sail

If your backyard lacks natural shade, consider installing a pop-up canopy, gazebo, or shade sail over the pool. These can be easily moved and adjusted as needed.

Features to look for:

• UV-resistant fabric (e.g., polyester or polyethylene)

• Adjustable height and angles

• Stability in wind and weather

A canopy not only protects the pool but also provides a cool lounging area for swimmers.

5. Empty and Store the Pool When Not in Use

If you're not using the pool daily, draining and storing it is one of the most effective ways to prevent sun damage.

Steps:

• Drain all water thoroughly

• Clean and dry the pool completely

• Fold or roll it up carefully

• Store in a cool, dry indoor area away from sunlight and pests

This is especially important for inflatable plastic pools, which are more vulnerable to UV and weather damage.

6. Install a Pool Umbrella

For smaller plastic pools, using a large patio or offset umbrella is an easy and aesthetic way to provide shade. Some umbrellas even offer tilting mechanisms so you can adjust their angle throughout the day.

Ensure the base is sturdy and that the umbrella covers most of the pool’s surface.

7. Avoid Overinflation (for Inflatable Pools)

Sunlight heats up the air inside your inflatable pool, which can increase internal pressure and cause the seams to burst or leak. If your pool is already overinflated, it’s at greater risk.

Solution:
Inflate the pool to about 90-95% of its full capacity and leave room for heat expansion.

8. Maintain Regular Cleaning

Dirt, algae, and sunscreen can weaken the surface of plastic over time, especially when combined with UV exposure.

Cleaning tips:

• Use a soft sponge or cloth

• Avoid harsh brushes or abrasives

• Use mild dish soap and water or a vinegar solution

• Rinse thoroughly after every few uses

Clean plastic retains protectant sprays better and is less prone to cracking.

9. Recoat With Plastic Sealant

If your pool’s surface is beginning to show signs of wear, consider applying a plastic sealant. These products restore the surface and provide a UV-blocking layer.

This is particularly useful for hard plastic pools that can’t be folded and stored easily.

Seasonal Storage Tips

When summer ends, storing your pool correctly is key to keeping it in good shape for the next season.

Storage Checklist:

• Wash and rinse the pool

• Dry it completely to avoid mold

• Check for leaks and patch them

• Use talcum powder or cornstarch to prevent plastic from sticking

• Store in a weatherproof plastic bin or a protective bag

Avoid storing in attics or sheds with high temperatures and direct sun.

When to Replace Your Plastic Pool

Despite your best efforts, there comes a time when a plastic pool needs to be replaced. Consider buying a new one if:

• You notice deep cracks or structural damage

• The plastic feels too brittle to hold water

• There are persistent leaks

• The color has faded significantly, indicating UV degradation

• Air chambers no longer hold pressure

When replacing, look for models labeled as UV-resistant or made from thicker PVC materials.

Final Thoughts

Your plastic pool provides hours of fun and relaxation during the hot months, but constant sun exposure can quickly cut its lifespan short. By taking a few simple preventative steps—like using a UV cover, applying protectant spray, and storing it properly—you can extend your pool’s usability for several seasons.

With the right care, even a basic backyard plastic pool can remain in great condition, ready to offer cool comfort year after year. Whether you choose natural shade, artificial cover, or chemical protection, the key is consistency. A little effort now means a lot less hassle (and cost) later.