Description
1/4" PermaBase® BRAND Cement Board is designed as an underlayment for ceramic tile on floors, countertops, tub decks, and outdoor kitchen counters. It is a rigid substrate made from Portland cement, aggregate, and glass mesh, providing a durable surface resistant to moisture exposure. The product features patented EdgeTech® technology for enhanced edge durability and ease of installation.

Features/Benefits

• The 1/4" thickness allows for seamless integration with adjacent flooring materials without modifying thresholds.
• Resistant to mold and mildew, achieving the highest possible panel score of 10 per ASTM D 3273.
• Suitable for countertops, especially over laminate or wood surfaces.
• Lower moisture absorption rate ensures accurate open time and better bonding.
• Double-wrapped edges facilitate closer fastening without damage.
• Can be cut with a standard utility knife, eliminating the need for specialty tools.
• Highly moisture-resistant, preventing rot, swelling, or disintegration.
• Compatible with all brands of thinsets and grouts.
• Offers a 30-year limited warranty for interior applications.

Technical Information
For technical support, contact National Gypsum Company at (800) NATIONAL or visit their website.

Comparison Chart
The comparison chart highlights PermaBase's advantages over fiber cement, including lower moisture absorption, suitability for exterior use, ease of cutting, and longer warranty. It also notes that PermaBase does not require surface wiping before applying setting compounds and does not need expansion joints every 15 feet.

Installation Recommendations
National Gypsum recommends using PermaBase Tape and Screws for installation to ensure optimal performance.