Evolve Stone

National True Stone Veneer

National True is a lightweight, mortarless, color-throughout composite stone veneer for exterior façades and interior feature walls. Its consistent course heights and varied lengths create a clean, linear stone pattern.

Evolve Stone is classified under CSI Section 04 73 00 — Manufactured Stone Masonry and Section 07 46 43 — Composition Siding in ICC-ES Evaluation Report ESR-3970.

At approximately 2 lb per square foot, National True combines stone texture with finish-nailer installation and color throughout each piece, including exposed cut edges.

Choose from seven standard colors, with custom color matching available for larger projects. Physical samples are available to evaluate color and texture alongside the project’s other finish materials.

Specification

Product
- Material: color-throughout composite stone veneer.
- Applications: exterior veneer siding and interior wall covering.
- Field stone weight: approximately 2 lb per square foot.
- Profile: 4-inch heights with varied lengths.
- Approximate face sizes: 4 × 7¾ inches to 4 × 15½ inches.
- Coverage: 14.25 square feet per field stone box.
Colors and accessories
Standard colors: Phantom Shadow, Morning Aspen, Afternoon Vale, River Clay, Dune Point, Kodiak Mine and Winter Valley.
Custom color matching is available for larger projects. Pre-formed outside corners and universal sills are available.
Testing and technical documentation
Published testing includes:
- Wind loading — ASTM E330
- Ultraviolet exposure — ASTM G155
- Salt spray — ASTM B117
- Water resistance — ASTM D2247-15
- Freeze-thaw — AC92 Section 4.2
- Flexural testing — ASTM D1037
- Surface burning — ASTM E84
Refer to individual reports for applicable products, test conditions and limitations. ASTM E84 surface-burning test results and listing conditions are documented in ESL-1247.
Installation
Exterior installation requires a rainscreen assembly. Interior installation is directly to wood sheathing. Follow the current installation guide for the specified application.
Material samples
Request physical samples to review color, texture and scale. Displayed colors may differ from the physical product.