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Southern California’s Trusted Supplier for Fiberglass, Metal Lath & Building Materials

At R Composite, we specialize in supplying high-quality fiberglass chopped strand mat, metal lath utility base, and a variety of building materials to contractors, architects, and industry professionals throughout Southern California. With over 30 years of installation experience, we know what it takes to deliver products that perform in the field. From Orange County to Los Angeles and Riverside, we provide durable, code-compliant solutions backed by personalized service, fast delivery, and competitive pricing.

Fiberglass, Metal Lath & Building Materials Trusted Supplier

Our Products

Metal Lath Utility Base

Our multi-purpose utility lath is the professional’s choice for use with steel or wood framing. Easily cut and formed to accommodate curves, it’s commonly used for:

Exterior stucco applications
Waterproofing systems for balconies & decks
Decorative and furred walls
Structural fireproofing
Contour plastering

Built for strength and flexibility, our metal lath helps ensure a flawless finish and long-lasting durability.

Fiberglass Chopped Strand Mat

Our R Composite Chopped Strand Mat is made from randomly distributed chopped glass strands, bonded with a powder binder for superior performance. Designed for hand lay-up, filament winding, and continuous laminating, it’s ideal for a wide range of applications, including:

Boats & marine components
Bath equipment
Storage tanks & cooling towers
Resin coating & epoxy resin projects
Architectural building components

Compatible with unsaturated polyester, vinyl ester, and epoxy resins, our fiberglass mat offers exceptional versatility and strength.

Why Choose R Composite?

Customer-Centric Approach

Your success is our priority. We take the time to understand your needs, providing tailored products and solutions that keep projects on time and on budget.

Best Fiberglass Mat & Metal Lath on the Market

Quality You Can Trust

We offer the best fiberglass mat and metal lath on the market. No product leaves our facility without a thorough quality inspection.

Transparent Communication

We keep you informed every step of the way with clear, honest updates so you always know the status of your order.

Innovative Solutions

We stay ahead of industry trends to deliver up-to-date, high-performance materials that meet today’s building challenges.

American-Made

We’re a locally owned business and all our products are American-made using the highest quality materials available.

Nationwide Convenient Shipping Options Available

Nationwide Shipping

We offer convenient shipping options nationwide.

Southern California Fiberglass Mat & Metal Lath Supplier

A Message from Our CEO

I have taken my three decades of knowledge and experience to found a company dedicated to supplying industry professionals with the best quality building products and materials at the best possible price.

— Bill Ritt, CEO

Premium Building Products, Competitive Pricing, and Unmatched Service

From Orange County to Los Angeles and Riverside, R Composite is your local partner for dependable building materials. We also offer nationwide shipping for our entire line of metal lath and fiberglass products. No matter where your project is located, R Composite is committed to delivering the high-quality materials you need, quickly and reliably. Our American-owned business is built on quality, service, and integrity because we believe in delivering products that don’t cut corners. Contact us today to discuss your project needs or request a custom quote. Experience the R Composite difference—where quality, service, and value come together.