California Slate Company

California Slate Company Premium natural slate roofing solutions. Traditional & lightweight systems built for beauty, durability, and sustainability. Based in California.

Build With Materials You Can TrustSpecifications matter — especially when you’re designing roofing systems that must las...
05/27/2026

Build With Materials You Can Trust

Specifications matter — especially when you’re designing roofing systems that must last generations. California Slate provides architects with true S-1 Grade natural slate backed by certified testing, structural documentation, WUI compliance, and performance data you can rely on

From submittals to installation details, we support your team with the right information at every stage of the process. Clear specs mean fewer surprises in the field — and stronger outcomes for your clients.

Explore specs + certifications →
Read the full article here
https://www.californiaslatecompany.com/post/specifying-with-confidence-why-architects-rely-on-certified-s-1-grade-slate
🔗 www.californiaslatecompany.com/testing-certifications


Recommended @ Mentions:
The American Institute of Architects CSI Construction, Inc. Building Design+Construction

Build With ConfidenceSpecifying slate shouldn’t be complicated. Our architectural resources include ASTM data, installat...
05/25/2026

Build With Confidence

Specifying slate shouldn’t be complicated. Our architectural resources include ASTM data, installation guidelines, CAD details, and product specs — all curated to streamline your workflow and give your clients better outcomes.

Full details here:
https://www.californiaslatecompany.com/post/the-architect-s-guide-to-specifying-slate-roofing

Access everything here:
www.californiaslatecompany.com/testing-certifications
AIA California CSI Construction, Inc. Building Enclosure

Design Without LimitsModern architecture demands performance, precision, and timeless materials. Natural slate checks ev...
05/20/2026

Design Without Limits

Modern architecture demands performance, precision, and timeless materials. Natural slate checks every box. California Slate partners with architects to deliver high-grade, design-flexible slate roofing — from modern coastal builds to steep-slope mountain projects.

Architects deserve materials that don’t compromise performance or design intent. California Slate offers true S-1 grade natural slate + lightweight SLATE2™ — engineered for modern build requirements.

Whether you're detailing a contemporary residence or restoring a historic property, our team supports you with specs, samples, and technical guidance.

Read full info here:
https://www.californiaslatecompany.com/post/designing-without-limits-why-slate-belongs-in-modern
AIA National Construction Specifications Institute

Samples, specs, and one-on-one support available.
📐 Explore architectural resources: www.californiaslatecompany.com

The American Institute of Architects American Institute of Architects Orange County - Associates ArchDaily

When wildfire swept through Palisades, one roof stood strong — slate.While surrounding homes were destroyed, this reside...
05/18/2026

When wildfire swept through Palisades, one roof stood strong — slate.
While surrounding homes were destroyed, this residence was protected by the natural fire resistance of stone.

Slate isn’t just beautiful — it’s Class A fire-rated, non-combustible, and built to last for generations. For families in fire-prone regions, that’s peace of mind no other roofing material can offer.

🏡 Protect your home. Protect your legacy.

🔗 Read the full story: https://www.californiaslatecompany.com/post/why-natural-slate-is-the-smartest-roofing-choice-in-fire-zones

Safety Starts at the RoofFire-Resistant by NatureSlate is non-combustible. It doesn’t melt, warp, or ignite.For homeowne...
04/24/2026

Safety Starts at the Roof

Fire-Resistant by Nature

Slate is non-combustible. It doesn’t melt, warp, or ignite.
For homeowners in fire-prone regions, that matters — a lot.

A slate roof isn’t just beautiful. It’s peace of mind.

Materials That Outlast TrendsDesigned for GenerationsSlate has protected buildings for centuries. When you specify slate...
04/21/2026

Materials That Outlast Trends

Designed for Generations

Slate has protected buildings for centuries. When you specify slate, you’re designing beyond trends — for longevity, sustainability, and architectural legacy.

Some materials simply endure.


www.californiaslatecompany.com

Built Once. Enjoyed for a Lifetime.A Roof You Never Have to Think AboutMost roofs are replaced every 20 years.A natural ...
04/17/2026

Built Once. Enjoyed for a Lifetime.

A Roof You Never Have to Think About

Most roofs are replaced every 20 years.
A natural slate roof can last 100+.

That means fewer disruptions, lower lifetime cost, and the confidence of knowing your home is protected by one of the most durable natural materials on earth.

Visit our blog - Learn More!
https://www.californiaslatecompany.com/post/why-natural-materials-matter-choosing-a-roof-built-for-a-lifetime

Slate isn’t trendy. It’s timeless.
🔗 www.californiaslatecompany.com

Lightweight Without CompromiseExpand What’s PossibleSLATE2™ allows architects to specify natural slate on remodels, retr...
04/14/2026

Lightweight Without Compromise

Expand What’s Possible

SLATE2™ allows architects to specify natural slate on remodels, retrofits, and structures with load constraints — without sacrificing design intent or performance.

Innovation that respects tradition.


www.californiaslatecompany.com

Address

344 Market Street
San Francisco, CA
94114

Telephone

+18889940842

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