Composeal Gold 30 Mil Crack Isolation Waterproof Membrane - Cut to Order

Composeal Gold 30 Mil Crack Isolation Waterproof Membrane - Cut to Order

Professional waterproofing and crack isolation membrane designed for ceramic tile, porcelain, marble, natural stone, and brick installations in residential and commercial applications.

Sold in 5 sq. ft. increments.

Sold by linear foot and priced by square foot - each linear foot equals approximately 5 square feet due to the 5.1 ft roll width.

Roll Width: 5.1 ft
Thickness: 30 mil
Application: Waterproofing & Crack Isolation

The Composeal Gold Waterproof Membrane is a professional-grade sheet membrane engineered to provide superior waterproofing protection and crack isolation beneath tile and stone installations. Its advanced multi-layer construction helps prevent substrate movement and moisture migration from damaging finished tile surfaces.

Designed for direct bond tile applications, Composeal Gold allows ceramic tile, porcelain tile, marble, brick, and natural stone to be installed directly over the membrane using standard thin-set mortar systems.

Advanced Multi-Ply Construction

Composeal Gold features a durable heat-fused multi-ply membrane system that combines high bonding strength, flexibility, and long-term waterproof protection. The reinforced non-woven polyester outer layers are permanently fused to a flexible PVC core for outstanding performance and durability.

Key Features:

• 30 mil thick waterproof crack isolation membrane
• Helps prevent tile and stone failures caused by substrate movement
• Superior protection against shrinkage and stress cracks
• Allows direct bonding of tile and stone using thin-set mortar
• Excellent adhesion and long-term durability
• One-step seam installation for reduced labor time
• Resistant to mildew, fungus, and common construction chemicals
• Suitable for interior and exterior applications
• Ideal for floors, walls, decks, showers, and wet areas
• Flexible membrane accommodates minor substrate movement

Compatible Substrates:

• Concrete slabs
• Mortar beds
• Cement backer board
• Exterior-grade plywood (with proper preparation)
• Approved tile underlayment systems

Crack Isolation Performance

Independent Robinson Floor Tester laboratory testing confirmed excellent crack suppression performance. Composeal Gold helps reduce the transfer of substrate movement and shrinkage cracking into tile and stone finishes.

Waterproofing Protection

The integrated PVC waterproof core is based on proven shower pan liner technology designed to help prevent water penetration and moisture migration beneath tile installations.

Ideal Applications:

• Ceramic tile installations
• Porcelain tile installations
• Natural stone flooring
• Marble and granite installations
• Commercial flooring systems
• Residential remodeling projects
• Exterior decks and balconies
• Bathrooms, showers, and wet areas

Installation Benefits

• Fast and efficient installation process
• Thin-set direct bond compatibility
• Helps reduce tile cracking caused by substrate stress
• Professional-grade waterproofing protection
• Long-lasting performance for demanding environments

Warranty Information

Composeal membranes are designed to last the life of the building. Warranty applies to the membrane material against manufacturing defects and does not cover installation conditions.

Made in the U.S.A.

Helpful Resources

Watch Composeal Waterproofing Videos

Composeal Gold Installation Instructions

Composeal Blue Shower Pan Membrane Installation Guide

Solutions for Concrete Crack Problems

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