The best base for a great finish

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PermaBASE Construction Guide

Our updated interactive guide features all the product information and installation instructions for cement board products manufactured or offered by PermaBASE Building Products.

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Products Overview

The ideal substrate

In addition to being the ideal solution for interior walls or floors, PermaBASE cement board products are also a great option for exterior walls. A rigid substrate made of Portland cement, aggregate, and glass mesh, they provide an exceptionally hard, durable surface that is able to withstand prolonged exposure.

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Why PermaBASE

Moisture doesn't stand a chance

No matter your moisture concerns or environmental issues, we have the answer. PermaBASE® Building Products offers the industry’s largest variety of cement boards for performance and peace of mind. Learn more about why PermaBASE is preferred by most contractors, delivering long-lasting results across a range of projects.

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Covering the most demanding applications

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Designs & Resources

Find product details and technical documentation in the Design & Resource Center.

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Expert Connection

Expert Connection

Discuss your project with PermaBASE experts who can help guide your product selection.

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Need Technical Information?

Call 1-800-NATIONAL®

National Gypsum Company is the exclusive service provider for products manufactured by PermaBASE Building Products, LLC.