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Bathroom Waterproofing Systems

Bathroom waterproofing is a critical part of protecting floors and walls in wet environments where water exposure is frequent and unavoidable. ProLux Materials bathroom waterproofing systems are designed to create a continuous waterproof barrier beneath tile and other finishes, helping prevent moisture from reaching subfloors, wall assemblies, and structural materials. Installed behind finished surfaces, these systems help manage water from daily use while supporting long-term durability in bathrooms of all sizes.

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$136.25 - $530.00
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PROVA Mat Waterproofing Membrane

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PROVA Mat Waterproofing Membrane is a thin, flexible, low-perm sheet membrane that creates a watertight barrier for tile showers, bathrooms, and we...

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$136.25 - $530.00
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$136.25
$109.00 - $424.00
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$31.19 - $866.88
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$24.95 - $693.50
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PROVA Joint Waterproofing Membrane Band

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PROVA Joint is a thin waterproof membrane tape designed to seal critical seams, corners, and transitions in PROVA waterproofing and underlayment ap...

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$289.00 - $2,016.00
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$289.00

PROVA Board Plus+ Waterproof Tile Backer Board

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PROVA Board Plus+ is a lightweight, waterproof high-density XPS foam tile backer board that replaces heavy, moisture-prone cement boards with a cle...

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PROVA Seal Hybrid Silicone Waterproof Sealant & Adhesive

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PROVA Seal — the next-generation hybrid silicone shower waterproof sealant that combines the flexibility of silicone with the strength of an adhesi...

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PROVA Corner Inside Waterproof Corner

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Seal every corner with confidence. The PROVA Inside Preformed Waterproofing Corner delivers fast, reliable waterproofing protection where leaks and...

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PROVA Corner Outside Waterproof Corner

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Waterproof every corner with precision. The PROVA Preformed Outside Corner provides quick, dependable waterproofing for outside-angle corners on sh...

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PROVA Pipe Seal Waterproof Pipe Collar

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The PROVA Pipe Seal is a prefabricated, waterproof pipe collar engineered to create a watertight, long-lasting seal around pipe penetrations in sho...

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PROVA Wide-Head Tile Backer Board Washers

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PROVA Wide-Head Washers are purpose-engineered to lock XPS foam backer boards securely in place without crushing the surface — delivering the stabl...

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$24.94 - $104.38
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$19.95 - $83.50
$19.95 - $83.50
$19.95

PROVA Fasteners Backer Board Screws 1-5/8"

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PROVA Fasteners are purpose-built screws engineered for attaching PROVA XPS backer boards and accessories to wood or metal substrates. Designed for...

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$19.95 - $83.50
$19.95 - $83.50
$19.95
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Complete Bathroom Waterproofing Solutions That Last

Complete Bathroom Waterproofing Solutions That Last

Bathrooms experience constant moisture from showers, tubs, sinks, and routine cleaning. Without proper bathroom waterproofing, water can migrate through grout lines, seams, and joints, eventually reaching hidden structural areas. Over time, this can lead to mold growth, water staining, and deterioration of flooring and wall assemblies.

ProLux bathroom waterproofing systems use bonded waterproof membranes and compatible components to protect both floors and walls beneath tile installations. These membranes are installed over approved subfloors and wall substrates, creating a sealed layer before tile is set. Rather than relying on surface sealers or grout to stop water, the system manages moisture at the substrate level.

Installing a waterproof bathroom floor membrane also provides a stable, tile-ready surface that supports consistent tile adhesion. When used as part of a waterproof subfloor bathroom design, these systems help prevent moisture penetration into framing and structural materials. The result is a bathroom that remains easier to maintain and better protected under everyday use.

Why Bathroom Waterproofing Protects Your Home Investment

Why Bathroom Waterproofing Protects Your Home Investment

  • Helps prevent hidden leaks beneath tile
    Waterproof membranes block water from reaching subfloors and wall assemblies where damage can develop out of sight.
  • Seals seams and transitions effectively
    Proper waterproofing helps protect corners, edges, and joints that are common weak points in bathroom floors and walls.
  • Supports long-term tile performance
    A waterproof substrate helps maintain tile adhesion and grout integrity under regular moisture exposure.
  • Helps reduce mold and mildew risk
    Limiting moisture behind finished surfaces reduces conditions that allow mold growth within wall cavities.
  • Protects bathroom subfloors over time
    Bathroom waterproofing membranes help prevent rot and deterioration in structural materials beneath the finished floor.

Bathroom waterproofing is an essential element of modern bathroom construction and renovation. ProLux systems are designed to provide bathroom-specific protection that supports durable finishes and long-term structural integrity throughout the space.

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FREQUENTLY ASKED QUESTIONS

Why do I need bathroom waterproofing?

Bathrooms are high-moisture environments. Waterproofing creates a sealed layer beneath floors and walls that helps prevent leaks, mold development, and costly structural repairs.

How does a waterproof bathroom floor membrane work?

A waterproof bathroom floor membrane forms a barrier that prevents water from seeping into the subfloor while providing a stable surface for tile installation.

Can I waterproof my bathroom myself?

Many ProLux bathroom waterproofing systems are designed for straightforward installation. Following product instructions carefully is important for achieving long-term performance.

How long will bathroom waterproofing last?

When installed correctly, bathroom waterproofing membranes can last as long as the tile installation itself, providing long-term protection under normal use.

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