Does Polyaspartic Yellow in the Sun?

Yellowing is epoxy’s biggest weakness in Arizona. Here’s the straight answer on whether polyaspartic has the same problem.

★★★★★  4.7/5 from 89 Google reviews|Licensed ROC #168150|Typically a 2-Day Install · Family-Owned Since 1995

High-gloss blue-gray flake garage floor coating by AZ Garage Floors★ 4.7 · 89 reviews

4.7★

Google Rating

ROC

#168150 Licensed

~2-Day

Typical Install

Since 1995

Family-Owned

If you’ve seen an old garage floor turn amber and chalky, you’ve seen epoxy yellowing — and in sun-soaked Arizona it happens fast. So does polyaspartic do the same thing? Here’s the honest answer. (More in our polyaspartic garage floor coating guide.)

No — Polyaspartic Is 100% UV-Stable

Unlike epoxy, polyaspartic is fully UV-stable. It holds its color and clarity in direct sunlight instead of yellowing, ambering, or chalking. That’s a big reason it’s the coating of choice for sun-exposed Arizona garages, covered patios, and pool decks where epoxy would discolor within a couple of seasons.

Why Epoxy Yellows and Polyaspartic Doesn’t

Standard epoxy’s chemistry breaks down under UV, which shifts its color and dulls its gloss. Polyaspartic (an aliphatic chemistry) is engineered to resist exactly that. One important note: raw polyurea basecoats can yellow on their own, which is why the best systems seal a flexible polyurea base with a UV-stable polyaspartic topcoat — you get the strength of one and the sun-resistance of the other.

What Arizona Homeowners Say

Real, verified Google reviews from AZ Garage Floors customers across the West Valley — 4.7★ from 89 reviews.

★★★★★

“Austin arrived for a scheduled estimate, went through all the options and respective details for each application. I made the commitment and scheduled the service date. The pricing was competitive, the actual workmanship very professional and timely. The schedule was kept and the final product is outstanding! Definitely recommend this company!”

Patrick WalshVerified Google review · 3 months ago

★★★★★

“Austin and Hayden at AZ Garage Floor turned our bare concrete garage into a stunning, showroom-quality space with a flawless epoxy coating. The finish is perfectly smooth, glossy, and ultra-durable—spills wipe right off and the color is spot-on. They arrived on time, worked efficiently, and protected every surface while keeping the area immaculate.”

Tyler McLuenVerified Google review · 8 months ago

★★★★★

“We just got our garage floors epoxied with AZ garage floors and so far we have been nothing but pleased with the final results so far. They were quick, accommodating, and the price was as right where we were comfortable paying!”

Katie WhitehairVerified Google review · 10 months ago

Polyaspartic & UV FAQs

No. Polyaspartic is 100% UV-stable, so it keeps its color in direct Arizona sun instead of yellowing like epoxy.

Epoxy’s chemistry degrades under UV light, causing it to amber, chalk, and lose gloss — especially fast in strong Arizona sun.

Yes — because it won’t yellow or fade in the sun, it’s ideal for covered patios, pool decks, and other sun-exposed surfaces.

Explore More on Polyaspartic Coatings

Polyaspartic Floor Coatings GuidePolyaspartic vs. EpoxyPolyurea Floor CoatingsWhat Polyaspartic CostsHow Long Polyaspartic Lasts

Thinking About a Polyaspartic Floor?

Get a free, no-pressure quote and honest advice. Or read the full polyaspartic garage floor guide. Family-owned since 1995 · ROC #168150.

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