How to remove old pool paint

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Introduction

Is your pool surface peeling, flaking, or fading? If so, it might be time to strip away the old paint before refinishing. In this step-by-step guide, you’ll learn exactly how to remove old pool paint safely and effectively. Whether you’re restoring a concrete, plaster, or fiberglass pool, this guide will help you prepare the surface for a fresh coat that lasts longer and looks better.

Why Removing Old Pool Paint Matters

Applying new paint over old, peeling layers can lead to poor adhesion, premature failure, and an uneven finish. Proper removal:

  • Creates a clean surface for new paint
  • Ensures better adhesion and durability
  • Helps detect cracks, rust, or structural issues underneath
  • Prevents blistering, bubbling, or chipping

If you’re repainting your pool, starting with a fresh, clean base is the only way to ensure a smooth and long-lasting finish.

Step-by-Step Guide to Removing Old Pool Paint

Step 1: Identify the Type of Pool Paint

Before starting, determine what kind of paint is currently on your pool. The most common types are:

  • Epoxy: Very durable, lasts 5–7 years
  • Chlorinated Rubber: Less common now, lasts 2–4 years
  • Water-Based Acrylic: Easy to apply, lasts 1–2 years

To test:

  1. Soak a rag in xylene (paint thinner)
  2. Rub a small section of the painted surface
    • If it softens or becomes tacky = acrylic
    • If it doesn’t react = epoxy
    • If it dissolves slowly = rubber-based

Knowing the paint type helps you choose the right removal method.

Step 2: Drain and Dry the Pool

Fully drain the pool and allow the surface to dry for at least 24–48 hours. A dry surface is safer to work on and allows better visibility of paint condition.

⚠️ Caution: Make sure to release water according to local environmental regulations.

Step 3: Choose a Removal Method

You can remove old pool paint using three main approaches:

Option 1: Manual Scraping and Sanding

  • Best for small pools or spot removal
  • Use paint scrapers, wire brushes, and sanding discs
  • Wear a dust mask and eye protection

Option 2: Chemical Paint Strippers

  • Ideal for large pools or thick layers
  • Use a pool-safe gel-based stripper that clings to vertical surfaces
  • Apply with a roller or brush, wait per instructions (usually 4–12 hours), then scrape off

💡 Tip: Always use a biodegradable, non-toxic stripper designed for pool surfaces.

Option 3: Media Blasting (Sandblasting or Soda Blasting)

  • Fastest and most effective method
  • Uses high-pressure blasting to strip paint
  • Requires professional equipment and safety gear
  • Best for large commercial or heavily layered pools

⚠️ Note: Soda blasting is less aggressive than sandblasting and is better for delicate surfaces like fiberglass.

Step 4: Prep the Area and Use Safety Gear

Pool paint contains chemicals that can be harmful if inhaled or touched. Always wear:

  • Safety goggles
  • Respirator or dust mask
  • Gloves
  • Long sleeves and pants

Also, cover nearby landscaping or surfaces with drop cloths or plastic sheeting to prevent contamination.

Step 5: Begin the Removal Process

Depending on the method you’ve chosen:

  • Scraping/Sanding: Start with the loosest, peeling areas first and work your way to more stubborn sections. Use a power sander for large areas.
  • Chemical Stripper: Apply an even coat, wait for the paint to bubble or wrinkle, then scrape off. Repeat as needed.
  • Blasting: Work in sections and move slowly to avoid damaging the pool’s surface.

After the first round, check for any remaining stubborn spots and reapply your method where needed.

Step 6: Rinse and Neutralize

After removal:

  1. Rinse the entire pool with a garden hose or pressure washer
  2. For chemical strippers, neutralize the surface using a trisodium phosphate (TSP) solution or as directed by the stripper manufacturer
  3. Let the pool surface dry for 48–72 hours

💡 Pro Tip: Look for a uniform, dull finish across the entire pool — this indicates you’ve removed the old paint successfully.

Step 7: Repair and Smooth the Surface

Before repainting:

  • Patch any cracks, chips, or rebar rust spots
  • Sand down any rough patches or leftover edges
  • Ensure surface is free of dust, debris, or grease

A clean, smooth surface ensures your new pool paint adheres properly and looks great.

Common Mistakes to Avoid

  1. Painting Over Old Paint
    New paint won’t adhere to old, peeling layers. Always strip before recoating.
  2. Using the Wrong Paint Stripper
    Not all strippers are safe for pools. Only use pool-specific, non-acidic products.
  3. Skipping Safety Gear
    Paint dust and stripper fumes can be harmful. Protect your lungs and skin.
  4. Not Testing the Paint Type First
    Using the wrong removal method can damage the pool or fail to remove the paint.
  5. Leaving Residue Before Repainting
    Any leftover paint or dust can prevent adhesion. Always rinse and dry thoroughly.

Extra Tips & Pool Hacks

  • Work in Sections: For larger pools, break the job into sections over 2–3 days to avoid burnout.
  • Use a Wet/Dry Vac: Helps remove debris and sludge during scraping or rinsing.
  • Consider Hiring Professionals: If you’re working on a large or older pool, professionals with blasting equipment may save time and give better results.

Want to refinish next? Read our guide on [how to repaint your pool like a pro].

Conclusion

Removing old pool paint is a critical first step before applying a new finish. Whether you’re scraping, stripping, or blasting, proper preparation ensures better adhesion, longer-lasting results, and a more beautiful pool. Take your time, follow safety precautions, and you’ll have a surface ready for a fresh, clean coat.

📌 Bookmark this guide for your next pool renovation project!