If you own a hot tub, you already know the cover takes a beating. It sits outside year-round, dealing with sun, rain, snow, heat, chemicals, and temperature changes. Over time, that can cause fading, cracking, drying, and even premature failure. This is where 303 Spray really shines.
What Is 303 Spray?
303 Spray (often called 303 Aerospace Protectant) is a UV-protective treatment designed to protect vinyl, rubber, plastic, and synthetic materials. It was originally developed for aerospace and marine use, which means it’s built to handle harsh outdoor conditions.
Hot tub covers are usually made from vinyl or similar materials—exactly what 303 Spray is designed for.
🌞 Superior UV Protection
One of the biggest enemies of hot tub covers is sun damage. UV rays cause vinyl to fade, dry out, and crack over time.
303 Spray creates a protective barrier that:
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Blocks harmful UV rays
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Slows fading and discoloration
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Prevents drying and cracking
Regular use can dramatically extend the life of your cover, especially if your hot tub sits in direct sunlight.
💧 Keeps Covers Flexible and Moisturized
Unlike some products that just sit on the surface, 303 Spray helps keep vinyl soft and flexible. This is important because stiff, brittle covers are much more likely to crack when opened, closed, or folded.
A treated cover:
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Feels smoother
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Resists cracking
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Is easier to handle
🚫 No Greasy or Slippery Residue
One major reason people prefer 303 Spray over cheaper alternatives is that it:
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Dries to a clean, non-greasy finish
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Doesn’t feel oily or sticky
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Won’t make the cover dangerously slippery
This makes it safer and more pleasant to use compared to silicone-based sprays or household cleaners.
🧼 Helps Repel Dirt and Water
303 Spray also makes hot tub covers easier to clean. Treated surfaces:
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Repel water
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Don’t hold dirt as easily
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Wipe clean faster
That means less scrubbing and less buildup of grime over time.
🛑 Safe for Hot Tub Materials
Some cleaners and protectants can damage vinyl or break down stitching and seams. 303 Spray is:
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Non-toxic
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Non-abrasive
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Free of harsh solvents
When used as directed, it won’t harm your cover or surrounding spa surfaces.
⏱️ Easy to Apply
Using 303 Spray is simple:
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Clean the cover with mild soap and water
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Let it dry
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Spray 303 onto a cloth
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Wipe evenly over the surface
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Buff lightly if needed
You only need to apply it every 4–6 weeks for ongoing protection.
💰 Saves Money in the Long Run
Hot tub covers aren’t cheap. Replacing one early due to sun damage or cracking can cost hundreds of dollars. By protecting your cover with 303 Spray, you:
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Extend its lifespan
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Maintain its appearance
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Avoid early replacement costs
It’s a small investment that pays off over time.
Final Thoughts
303 Spray is widely considered the best product for hot tub covers because it offers powerful UV protection, keeps vinyl flexible, dries clean, and is easy to use. It’s designed for tough outdoor environments and works perfectly for the materials hot tub covers are made from.
If you want your hot tub cover to last longer, look better, and perform well year after year, 303 Spray is hard to beat.