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Why Waterproofing Matters

Concrete and masonry are naturally porous and subject to moisture, which over time can lead to leaks, delamination, degraded finishes, efflorescence and costly repairs. A properly applied waterproofing system:

Waterline Tile

Waterproofing is beneficial for waterline tile because it creates a flexible, waterproof barrier between the gunite and tile, preventing moisture from getting behind the tile — which stops pressure buildup, efflorescence, and bond failure that can cause tiles to pop off.

Plaster

Waterproofing prevents water from seeping through the concrete shell, which can cause plaster to delaminate, bubble, or discolor over time. By creating a barrier beneath the plaster, it stops moisture migration, reduces efflorescence, and protects against chemical damage. This helps the plaster bond better, last longer, and maintain a smoother, more durable finish.

• Forms a flexible, monolithic barrier that bridges small cracks and accommodates movement (for example, some systems bridge up to 1/8″ openings without rupture).

• Is vapor-permeable (breathable) to allow moisture vapor to escape while preventing liquid water from penetrating.

• Remains flexible and resists ageing, abrasion, chemical attack and hydrostatic pressure, providing long-term protection.

FAQs

What is waterproofing?

Waterproofing is the process of applying specialized coatings or membranes to prevent water from penetrating concrete, masonry, or other surfaces.

Why is it important?

Because water infiltration can cause leaks, mold, cracks, structural damage and ruined finishes — all of which lead to expensive repair work if left unchecked.

How long does it last?

When properly applied and maintained, professional waterproofing systems can last 10–25 years or even longer depending on exposure and material quality.

Why is pool waterproofing important?

Concrete is naturally porous, which allows water to seep through and cause structural damage over time. Waterproofing protects against leaks, prevents plaster from delaminating, and extends the overall lifespan of the pool.

Does every pool need waterproofing?

Yes. Even well-built pools can develop leaks without a proper waterproofing layer beneath the plaster or tile. Waterproofing is especially important for new pools, renovations, and high-water-pressure areas.

What causes plaster to pop off or crack without waterproofing?

Moisture from behind the finish builds up, weakening the bond of the plaster or tile. This leads to blistering, cracking, delamination or tile pop-off. A waterproofing layer stops that moisture migration and protects the structural bond.