Lightweight Series

Lightweight Cast

Stone

Strength Made Light. Design Made Easy.

70% lighter than traditional cast stone

Lightweight Series Stone features a foam core and limestone shell—up to 70% lighter, reducing structural and install costs.

  • Description

    RockCast’s Lightweight Series offers the aesthetic of full-depth masonry—without the weight. 


    Engineered with a proprietary limestone composite shell over a foam core, these units are up to 70% lighter than traditional cast stone, depending on size and thickness. The result? Lower project costs, simplified installation, and virtually unlimited design flexibility.


    Proven Performance

    • High compressive strength
    • Low water absorption rate
    • Durable enough for near-grade use

    Download Brochure

  • Installation

    Easy, Engineered Installation


    RockCast’s Lightweight Series offers multiple installation methods to suit your project needs:


    Clip & Track System – Allows fine adjustments, mounts to studs, and is engineered to handle wind loads and seismic activity


    Adhered Application – No mechanical anchoring required


    Engineered Anchoring & Mechanical Attachments – For high-performance, load-bearing needs


    Compatible with other cladding systems, including thin brick and stone


    Shop drawings and installation guidance available from our in-house team

  • Specifications

    Safety Data Sheet-Foam Core.pdf

    RockCast Lightweight Specification.doc

Design Freedom, Without Limits

Lightweight construction opens the door to creative detailing not possible with heavier materials. Use it for architectural features in places where full masonry isn’t practical on facades, soffits, canopies, and beyond. You’ll need less equipment on site, reduce install time, and keep your project on budget.

Monotone Colors

Looking for dependable color options that make selection easy?

Our Color Kit features clean, standard monotone tones that deliver timeless style and reliable consistency.

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Design with Confidence

See and feel our standard monotone color options in person—ensuring accurate selections that align with your design vision and client expectations.

Enhance Presentations & Client Meetings

The Color Kit is a professional, tangible tool to support concept boards, material presentations, and on-site consultations.

Informed Specifications

Make faster, more precise material selections backed by real samples—streamlining the specification and approval process.

Organized & Office-Ready

Compact, clean, and easy to store—an essential addition to your materials library or sample room.

At Reading Rock, we excel in custom color matching, ensuring our RockCast blends seamlessly with existing materials. Unlimited color options available that are sure to meet any design requirement.

The Right Color Everytime!

Seamless Integration

RockCast’s custom color matching ensures a perfect fit with existing materials.

Unlimited Color Options

Choose from a vast range of hues or create a custom blend.

Advanced Manufacturing

Consistent, high-quality color production for every project.

Architectural Versatility

Designed to complement diverse styles and materials.

SPLIT-FACE

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Chamfer Cut

with optional return (left-hand shown above)

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Our Process: Quality at Every Step

We don’t leave anything to chance. At Reading Rock, we control every step of the process to ensure top-quality products, fast turnaround, and reliable delivery.

Light, Flexibility for Bold Design

RockCast’s Lightweight Series opens up a world of design possibilities. It is ideal for both new construction and renovation projects where traditional full-depth masonry may not be practical. The reduced weight of each unit allows for more creative architectural accents and design flexibility without compromising structural integrity.

Custom Built to Your Project's Needs

From the careful selection of raw materials to the final product, our experienced team monitors every stage of production for consistency and durability.


All Reading Rock manufacturing facilities are certified by the NPCA, meeting the highest standards for plant facilities, production, and quality control procedures.


Our stone products undergo rigorous examination of product quality, safety, testing, and meticulous record-keeping.

Completed Perfection

Whether you're working on a university campus, commercial development, or municipal space, you can count on us to bring your vision to life—flawlessly.

Delivered Quality & Perfection

We prioritize efficiency so you can stay on schedule. Our distribution team ensures accurate, on-time deliveries, so you get the materials you need—when you need them.


With RockCast, you get reliability at every stage—because your project depends on it.

Contact Us

Have questions about product details, ordering, or installation? Our team is here to assist you at every stage of your project. Whether you’re selecting the right textures and colors or need expert advice on design and application, we’re ready to help.