A fiberglass pool can be a great backyard feature. It’s smooth, low-maintenance, and lasts for years. But just like anything else, it can wear out over time. Cracks, chalky spots, and blisters aren’t just ugly—they can mean bigger problems.
Resurfacing your fiberglass pool might sound like a big job. But if your pool is showing signs of age, it could save you money in the long run. This guide breaks it down in plain English. We’ll look at the common problems, what causes them, and what you can do before things get worse.
Common Problems in Aging Fiberglass Pools
Fading and Discoloration
Over time, sunlight and pool chemicals wear down the shiny top layer, called the gel coat. You might see your pool’s color fade or turn chalky white. The pool surface can feel rough to the touch, especially underfoot.
What’s the fix? Resurfacing with a new UV-resistant gel coat or epoxy finish can bring back the smooth surface and bright color. It’s also a chance to pick a new color or design if you’re feeling bold.
Surface Cracks or Spider Cracks
Little cracks, also called spider cracks, often show up around the pool steps or corners. These cracks can happen from ground movement, water pressure, or just years of use.
Why does this matter? If water gets into those cracks, it can reach the layers under the fiberglass and cause more damage.
Solution: A pro will sand down the area, patch it, and apply a fresh layer of coating. Some also use polymer-based resins that are flexible and long-lasting.
Osmotic Blistering and Bubbling
This one sounds scary, but it’s common. When water gets trapped between the layers of fiberglass, it can cause small bubbles or blisters to form. Over time, they can pop, peel, or smell weird.
What to do: These blisters need to be cut out, dried, and filled. A waterproof barrier coat is applied to stop more water from getting in before the new surface goes on.
Pool Resurfacing Methods That Actually Work
Gel Coat Resurfacing
The gel coat is what gives a fiberglass pool its glossy look. Reapplying this layer restores the pool’s original shine.
Pros: It looks great and resists UV damage and chemicals.
Cons: It needs careful prep and is best done by a pro.
Epoxy Coating System
This is a thick paint-like finish that sticks to the old surface.
Pros: It’s affordable, comes in fun colors, and some handy folks can DIY it.
Cons: It doesn’t last as long—maybe 5 to 8 years—and can peel if not applied right.
Polyurethane or Polymer Resins
These are newer resurfacing materials. They’re super strong and hold up well to weather and heavy use.
Pros: Long lifespan, crack-resistant, and great for busy pools.
Cons: They cost more and usually need a trained technician.
When Is It Time to Resurface Your Fiberglass Pool?
Warning Signs You Shouldn’t Ignore
If your pool has any of these signs, it’s time to consider resurfacing:
- Color is faded or uneven
- You feel rough spots or sharp edges
- Cracks or bubbles are visible
- Water levels drop faster than normal (could be a hidden crack)
- The surface feels chalky or flaky
These aren’t just cosmetic issues. They can lead to bigger problems like leaks or structural damage.
Pool Age vs. Resurfacing Timeline
Most fiberglass pools’ resurfacing lasts 20 to 30 years, but the surface might need refreshing every 7 to 15 years, depending on use and maintenance. If your pool is older than that and hasn’t been resurfaced, it might be overdue.
Cost-Benefit Analysis: Repair or Replace?
A full pool replacement can cost tens of thousands of dollars. Resurfacing is often just a fraction of the cost, usually between $3,000 and $10,000, depending on the pool size and method.
You’ll also save on water bills, chemical use, and ongoing repairs. A fresh surface can also raise your home’s value if you’re thinking of selling.
Can You Do It Yourself or Should You Hire a Pro?
DIY Might Work for Handy Homeowners
Some coatings, like epoxy paints, are made for do-it-yourself jobs. But the prep work is a big deal. You’ll need to drain the pool, sand it, clean it, and apply the finish carefully. Even small mistakes can cause peeling or bubbles.
When to Call a Professional
If your pool has deep cracks, blisters, or structural issues, call in a licensed pool contractor. They have tools and materials that most people can’t get. They’ll also spot hidden problems before they get worse.
Choosing the Right Materials for Resurfacing
Match Materials to Your Climate
Live in a hot, sunny area like Phoenix or Los Angeles? Go with UV-resistant gel coats. Live where it freezes in winter, like Chicago or Denver? Pick flexible materials that handle temperature swings.
Think Long-Term
Don’t just go for the cheapest option. A better coating now could save you from having to redo the whole thing again in five years. Talk to pros about what works best for your type of pool and area.
Conclusion: Resurfacing Isn’t Just Maintenance—It’s Smart Investment
If your fiberglass pool looks worn out or has signs of damage, don’t ignore it. Resurfacing isn’t just about looks. It keeps your pool safe, saves money, and helps it last for years.
Whether you go with a gel coat, epoxy, or polymer finish, the key is to act early—before small problems turn into big headaches. Talk to a pro if you’re not sure what your pool needs.
In the end, a little time and money spent on resurfacing now could save you thousands later. Your pool—and your wallet—will thank you.
