11 Signs Your Pool Needs Resurfacing (2026)

What it looks like

Run your hand along the pool wall or floor. A healthy finish feels smooth, like polished concrete or smooth ceramic. A failing finish feels gritty, rough, or sandpaper-like.

What it means

• Slight roughness in spots: Early-stage aging, no immediate action needed
• Noticeable roughness across most surfaces: Resurfacing should be planned in 1–3 years
• Sandpaper-like roughness throughout: Resurfacing is needed soon
• Roughness that catches swimsuits or scratches feet: Resurfacing should be scheduled

What it looks like

Lines on the pool surface ranging from hairline (barely visible) to obvious cracks wider than a credit card edge.

What it means

• Hairline cracks (less than 1/32" wide): Cosmetic only, usually not urgent
• Surface cracks (1/32" to 1/8" wide): Should be repaired but not immediately critical
• Wide cracks (over 1/8" wide): Structural concern, address promptly
• Cracks accompanied by water loss: Leak — address immediately

What it looks like

Brown, green, blue, gray, or rust-colored discoloration on pool surfaces. Some stains are uniform; others appear in patches or streaks.

Common stain sources

• Metallic staining (brown, rust): Iron or copper in water
• Organic staining (brown, green): Leaves, algae, organic debris
• Mineral staining (gray, blue): Calcium scaling, hard water deposits
• Chemical staining: Imbalanced chemistry damaging the finish

What it means

• Stains that respond to acid washing: Cosmetic issue, doesn't require resurfacing
• Stains that lighten but don't disappear: Surface damage has occurred, monitor closely
• Stains that don't respond to any treatment: Finish may be permanently damaged

What it looks like

Small pieces of pool finish breaking away from the underlying shell. You may find chunks on the pool floor, see exposed gray cement underneath, or notice patches of missing finish.

Why it happens

Spalling is delamination of the finish from the pool shell, caused by improper original installation, severe chemical imbalance, freeze-thaw stress, or age-related material breakdown.

What it means

This is one of the clearest signs that resurfacing is needed soon. Once spalling starts, it tends to accelerate. Continued use can damage the underlying concrete shell, leading to more expensive repairs.

What it looks like

Loss of color intensity in tinted plaster, quartz, or pebble finishes. The pool may look washed out, blotchy, or significantly lighter than it once was.

What it means

• Slight uniform fading: Normal aging, cosmetic only
• Significant fading across the whole pool: Late-stage finish, resurfacing in 2–5 years
• Blotchy or uneven fading: Underlying finish damage, resurfacing should be evaluated

What it looks like

When you tap a small hammer or sturdy object gently on pool wall areas (when drained), most areas sound solid. Hollow areas sound noticeably different — a higher-pitched, drum-like sound.

Why it happens

Delamination — the finish has separated from the underlying shell in those areas, creating an air gap. Hollow areas are pre-spalling: the finish is no longer bonded to the shell and will eventually fail.

What it looks like

You need more chlorine, more pH adjustments, or more shock treatment than you used to. The pool is harder to keep balanced or clear despite the same maintenance routine.

What it means

• 10–20% increase in chemical use: Possibly aging, monitor
• 30%+ increase year-over-year: Finish is degrading, plan resurfacing
• Pool difficult to clear despite proper chemistry: Finish has become too porous

What it looks like

Specific areas (often steps, walls near skimmers, or shallow-end floors) have become rough enough to physically catch fabric or scrape skin.

What it means

When roughness reaches the point of physical impact, resurfacing should be planned within 1–2 years for safety and comfort reasons. Wear concentrates in high-traffic areas — the finish breaks down faster where people frequently contact it.

What it looks like

Some areas of the pool look noticeably more aged than others. Common patterns: step edges worn smooth, floor wear in main swimming areas, wall wear at typical bather height, skimmer area wear.

What it means

Visible wear patterns indicate the finish is in middle-to-late life. The high-wear areas typically determine resurfacing timing — when they're noticeably failing, the whole pool needs work.

What it looks like

The water level drops faster than evaporation alone would explain. Standard evaporation in summer is about 1/4" per day; loss faster than that suggests leaking.

What it means

Active leaks need addressing regardless of finish condition. If the leak is through finish cracks, resurfacing typically fixes it. If the leak is through plumbing or the shell itself, that requires different repair.

What it means

Sometimes the answer is just "your finish is old enough to expect this."

• Plaster pool over 12 years old: Time to evaluate
• Quartz pool over 15 years old: Time to evaluate
• Pebble pool over 20 years old: Time to evaluate
• Tile pool over 30 years old: Evaluate but probably still good

If your pool is in this age range and showing any combination of the signs above, resurfacing is likely due. For specific lifespan expectations by finish type and climate region, see How Often to Resurface a Pool.