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

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

Professional waterproofing and crack isolation membrane for tile and stone installations.

Composeal Gold 30 Mil Crack Isolation Waterproof Membrane is a premium-grade sheet membrane designed to protect ceramic tile, porcelain tile, marble, granite, natural stone, and brick installations from moisture intrusion and substrate movement. Engineered for both residential and commercial projects, this waterproof membrane helps prevent cracks from transferring through to finished flooring surfaces while providing long-lasting moisture protection.

Sold in 5 sq. ft. increments.

Sold by linear foot and priced by square foot. Each linear foot provides approximately 5 square feet of coverage based on the 5.1-foot roll width.

Specifications:

• Roll Width: 5.1 ft.
• Thickness: 30 mil
• Application: Waterproofing and crack isolation
• Installation Method: Thin-set direct bond system
• Suitable for interior and exterior applications
• Made in the USA

Superior Waterproofing and Crack Protection

Composeal Gold is designed to create a reliable waterproof barrier beneath tile and stone finishes while helping isolate and bridge minor substrate movement. The membrane reduces the risk of cracked tile, grout damage, and moisture-related failures, making it an excellent choice for bathrooms, showers, kitchens, laundry rooms, balconies, patios, and commercial flooring installations.

Advanced Multi-Layer Construction

The membrane features a heat-fused multi-ply construction consisting of reinforced non-woven polyester fabric layers permanently bonded to a flexible PVC waterproof core. This durable design provides exceptional bonding performance, flexibility, and long-term protection in demanding environments.

Key Features and Benefits

• 30 mil thick waterproof crack isolation membrane
• Helps prevent cracks from transferring into tile and stone surfaces
• Protects against moisture migration and water intrusion
• Compatible with ceramic tile, porcelain tile, marble, granite, and natural stone
• Allows direct bonding with standard thin-set mortar systems
• Flexible design accommodates minor substrate movement
• One-step seam installation helps reduce labor time
• Resistant to mildew, fungus, and common construction chemicals
• Suitable for both residential and commercial applications
• Designed for floors, walls, showers, decks, and wet areas

Compatible Substrates

• Concrete slabs
• Mortar beds
• Cement backer board
• Exterior-grade plywood when properly prepared
• Approved tile underlayment systems

Ideal Applications

• Bathroom floor waterproofing
• Shower waterproofing systems
• Kitchen tile installations
• Porcelain tile flooring
• Natural stone flooring and walls
• Marble and granite installations
• Commercial flooring projects
• Residential remodeling applications
• Outdoor decks and balconies
• Wet rooms and moisture-prone areas

Tested Crack Isolation Performance

Independent Robinson Floor Tester laboratory testing has demonstrated excellent crack suppression capabilities. Composeal Gold helps reduce the transmission of substrate movement and shrinkage cracks into finished tile and stone surfaces, contributing to longer-lasting installations.

Waterproof Core Technology

The integrated PVC waterproof layer is based on proven shower pan liner technology that helps prevent water penetration beneath tile surfaces. This added protection makes Composeal Gold an excellent choice for showers, bathrooms, kitchens, and other areas exposed to moisture.

Installation Advantages

• Fast and efficient installation process
• Compatible with standard thin-set mortars
• Creates a durable waterproof barrier beneath tile
• Helps extend the life of tile and stone installations
• Suitable for demanding residential and commercial environments

Warranty Information

Composeal membranes are designed to provide long-term performance for the life of the building. Warranty coverage applies to membrane materials against manufacturing defects and does not cover installation-related conditions.

Helpful Resources

• Composeal Gold Installation Guide
• Composeal Gold and Radiant Heat Flooring Systems
• Composeal Waterproofing Videos
• Solution for Types of Concrete Cracks

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