Westlake Royal Building Products

With a broad portfolio of innovative exterior and interior materials—including siding, trim, roofing, stone, and specialty products—and trusted brands like Royal® Building Products, TruExterior®, Skytrim, and Cedar Renditions™, Westlake delivers premium quality, low-maintenance performance, and versatile design solutions for residential, commercial, and renovation projects.

*Product mix varies by location, please check with your local branch for product availability.

TruExterior Siding & Trim

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TruExterior

TruExterior® Siding & Trim combine the timeless look of wood with the unmatched durability of advanced poly-ash technology.

Designed to withstand moisture, pests, and extreme temperature changes, TruExterior delivers long-lasting beauty without the need for constant upkeep. Available in multiple styles and profiles, it provides the flexibility to achieve any design vision while ensuring superior performance in any climate.

Product Details

Features & Benefits

Authentic Appearance: Replicates the look and feel of real wood for classic curb appeal
High-Performance Material: Crafted from poly-ash for exceptional strength and stability
Moisture Resistance: Won’t swell, rot, or decay, even in high-humidity environments

Low Maintenance: Eliminates the need for frequent painting, sealing, or repairs
Dimensional Stability: Resists warping and cracking through temperature and humidity changes
Design Versatility: Available in various styles, profiles, and finishes to suit any project