Fiberglass water slides are a major attraction in waterparks, resorts, and recreational centers. Even though they are more resistant to corrosion and easier to clean and maintain when compared to other materials in the market, a regular maintenance routine and cleaning is still required to extend the lifespan of your pools, prevent costly repairs, and enhance the guest experience.

In a nutshell, here are 5 ways on how to maintain a fiberglass water slide:

  1. Clean the pool slides regularly with the right products
  2. Inspect the cracks and damages regularly
  3. Apply a protective gelcoat every 1-2 years
  4. Maintain proper water chemistry
  5. Reduce friction with a non-slip coating or wax treatment

Before we dive right into the details of how to maintain the pools effectively, let’s take a look at the common problems faced by them:

  • Fading and discoloration: Constant exposures to UV light, chlorine, and pool chemicals cause the slide’s gelcoat to fade, leading to a dull and unattractive apperance.
  • Cracks and surface damage: Water slides are subjected to small hairline cracks all the time due to stress and aging, and deep cracks may also form from impact damage or structural weaknesses.
  • Slippery or sticky slide surface: Worn-out gelcoat and accumulation of algae, grime, or scale buildup reduces the smoothness of the water slides and can make them either too slippery or sticky.
  • Gel coat peeling or chipping: Poor maintenance or using harsh chemicals can cause the gelcoat layer to peel off, which exposes the fiberglass underneath to the environment, thereby making it prone to further damage.
  • Leaks and structural weakness: Water infiltration through cracks or poorly sealed joints between slide sections can lead to leaks.

How To Maintain

1. Clean the Slide Regularly with the Right Products

Dirt, algae, and chemical buildup can make the slide sticky, reduce its speed, and cause long-term surface damage.

How to do it:

  • Use a pH-neutral, non-abrasive cleaner to remove grime, body oils, and mineral deposits.
  • Avoid harsh chemicals like bleach or ammonia, which can degrade the gelcoat.
  • Scrub gently with a soft sponge or microfiber cloth to avoid scratches.
  • Rinse thoroughly to ensure no residue remains.

Pro tip: Schedule deep cleaning at least once a month and light cleaning weekly for high-traffic slides.

2. Inspect for Cracks and Surface Damage Regularly

Early detection of cracks or chips prevents larger structural problems and expensive repairs.

How to do it:

  • Walk through a visual inspection of the slide every week, checking for cracks, chips, or rough patches.
  • Run a hand test along the slide’s surface to feel for irregularities.
  • If you spot cracks, repair them immediately with a fiberglass repair kit or hire a professional for deeper damage.

Pro Tip: Use waterproof sealants on minor cracks to prevent water infiltration and structural weakening.

3. Apply a UV-Protective Gelcoat Every 1-2 Years

A protective gelcoat prevents fading, enhances smoothness, and extends the life of the fiberglass.

How to do it:

  • Sand the surface lightly before applying a new marine-grade gelcoat.
  • Choose UV-resistant coatings to slow down sun-related fading.
  • Apply a wax-based sealant to further protect the slide’s color and texture.

Pro Tip: If your slide is already faded, use a buffing compound before reapplying the gelcoat for a polished finish.

4. Maintain Proper Water Chemistry

Improper pool pH and chlorine levels can corrode fiberglass surfaces, leading to peeling and discoloration.

How to do it:

  • Keep pH levels between 7.2 – 7.6 to minimize chemical wear on the slide.
  • Maintain chlorine levels around 1-3 ppm to prevent buildup without damaging the gelcoat.
  • Use calcium removers if you notice white scale buildup on the slide surface.

Pro Tip: Test the water twice a week and adjust chemical levels accordingly.

5. Reduce Friction with a Non-Slip Coating or Wax Treatment

Over time, pool slides can become too sticky or too fast, affecting safety and user experience.

How to do it:

  • Apply a non-slip polymer coating to maintain a safe slide speed.
  • Use a silicone-based wax every few months to restore smoothness without making the slide dangerously slippery.
  • Avoid using household wax, as it can break down quickly in water.

Pro Tip: If your slide feels inconsistent in different sections, use spot treatments rather than waxing the entire surface.

Schedule a Cleaning & Restoration With Experts

Small fiberglass pool slide maintenance is possible to do it yourself but when the problems get out of hand or if you are in need of a deep cleaning, then it’s best to call in professionals to help get things done. At Slide Rite, we provide comprehensive water slide repair, cleaning, and other services to help restore the health of your slides. Our experts are experienced and certified, and always ensure that the best services are provided for long-term results. Contact us now for more information or call 1-844-SLD-RITE.