How Often Do You Have to Re-Gelcoat a Fiberglass Pool?
Most fiberglass pools are never re-gelcoated on a schedule. The surface is repaired when something specific goes wrong, not renewed every few years.
Short answer: Most fiberglass pools are not re-gelcoated on a schedule. Latham says its fiberglass pools do not need the periodic resurfacing that concrete pools do, and its warranty sets no re-gelcoat interval. Gelcoat is repaired when a specific problem appears, such as blisters, not renewed after a set number of years.
What are gelcoat and the laminate underneath it?
Gelcoat is the colored, glossy resin layer you see and touch inside the pool. Behind it sits the laminate: layers of resin and reinforcing fibers that give the shell its strength. Latham builds its shells in layers, starting with its Crystite Gel Coat.
The two layers do different jobs. The gelcoat is the finish and the water-facing skin. The laminate behind it is what holds the pool’s shape and holds water. Problems in each layer look different and are handled differently.
Do fiberglass pools need to be re-gelcoated on a schedule?
No. We did not find a re-gelcoat interval in Latham’s warranty or in the other manufacturer warranty we compared. Latham’s own comparison of fiberglass and concrete says concrete pools need resurfacing roughly every 10 years and presents fiberglass as not needing that.
You will see “every 10 to 15 years” repeated online. We could not trace that figure to a pool maker’s published warranty or care guide, so we do not use it here.
What manufacturers do publish is a surface warranty, and the terms differ. Latham’s current warranty covers the gelcoat finish against osmotic blistering from defects in materials or workmanship for as long as the original owner owns the pool. Another manufacturer’s warranty sets a fixed number of years for the same coverage. That is why your own warranty matters more than any general rule.
What does normal aging look like?
Gelcoat is a coating exposed to sun, chemicals and years of use. It can change slowly. Latham says its gelcoat resists fading, stains and scratches, yet its warranty also lists fading, staining, discoloration, hairline cracks and changes in the surface’s appearance or texture as outside coverage. Makers treat these as cosmetic changes, not defects.
Here is how to sort what you see:
| What you see | How makers generally treat it | Sensible next step |
|---|---|---|
| Dulling, slight fading, light staining | Cosmetic change, excluded from Latham’s warranty | Review water chemistry and cleaning habits, then ask a pool professional to look |
| Hairline cracks in the surface | Cosmetic, excluded from Latham’s warranty | Photograph them and mention them at your next service visit |
| Blisters in the gelcoat | Osmotic blistering is the surface defect Latham’s warranty covers | Photograph them and contact the installer or pool maker promptly |
| Falling water level, a crack that leaks, or a shell that appears to have moved | Possible structural problem | Contact the installer or pool maker. Do not drain the pool yourself |
For light staining, Latham’s maintenance guide suggests gentle spot cleaning and asks owners to note any staining along the waterline during regular checks. Our guide to scratches on fiberglass pools covers surface marks in more detail.
What problems need a professional?
Blisters
Blisters are raised bubbles in the gelcoat. Latham’s warranty calls this osmotic blistering and covers it when it comes from a defect in materials or workmanship. The warranty asks for written notice within ten days of discovering a condition that may be covered. Check the version issued with your pool, because Latham publishes more than one warranty document.
Cracks that leak or movement in the shell
Latham’s warranty defines structural failure as water loss from a fracture, void or crack. A crack that does not lose water is treated differently from one that does. If the water level keeps dropping, or the shell looks shifted, call a professional before anything else.
Damage after draining
Latham’s warranty excludes damage from improper or unauthorized draining and from groundwater rising above the pool water level. Fiberglass pools are designed to stay full. If draining is ever needed, read our guide on draining a fiberglass pool safely and follow the pool maker’s written instructions.
What makes the surface wear faster?
Water chemistry
Latham’s warranty says improper or corrosive water can damage pool surfaces. It asks for weekly testing by a pool professional and for the test records to be kept. It also lists target ranges for chlorine, pH, alkalinity, calcium hardness, cyanuric acid and LSI. Use those ranges and the maker’s care guide, not a general rule of thumb. If your pool uses a salt chlorine generator, the warranty says to follow the generator maker’s guidelines as well. Our guide to water balance in a fiberglass pool explains the basics.
Cleaning methods
Latham’s Use and Care Manual warns against abrasive cleaners, steel wool, metal scrapers, wire brushes and metal tools on the gelcoat, and says they permanently damage it. Cleaners made for fiberglass are the safer choice.
Sun and general wear
Latham says its gelcoat resists fading, but fading is excluded from its warranty, so do not assume sun damage will be covered.
What does a professional repair involve?
We will describe it in general terms only, because the right repair depends on the cause and on the maker’s rules. A qualified professional finds the cause first. That matters because Latham’s warranty excludes deterioration caused by failure to maintain proper water chemistry. The repair then targets the affected area. Latham’s warranty notes that a repaired area may differ in shade, color or texture from the surrounding surface.
Latham’s warranty refers to draining and bracing the pool, and removing ground water around it, when a repair is made, so water level has to be planned by someone who knows how to support the shell. The warranty also states that repairs made by anyone other than the manufacturer’s authorized representative or an approved contractor are not covered. Recoating an entire pool surface is a separate question. Ask the pool maker before any work that could affect your warranty. Our overview of fiberglass pool durability and repair gives more background.
What should I check in my warranty?
- What the surface coverage includes, how long it lasts, and whether it passes to a later owner.
- Which changes are listed as cosmetic and excluded, such as fading, staining and hairline cracks.
- What the maker requires of you: water testing, records, keeping the pool full and following the care manual.
- How and when to give notice of a problem.
- Who is allowed to perform repairs.
Warranty terms are set by the pool maker, and they can change between versions. Read your own documents. If you cannot find them, ask your installer or the maker.
Last reviewed October 2026 by Calm Water Pools.
Related guides
- Fiberglass pool care and maintenance
- What happens to a fiberglass pool after 25 years
- Fiberglass pools FAQ
Planning a fiberglass pool in Maryland, D.C., Northern Virginia or West Virginia? Request a consultation or call 240-372-4440.