Business Details
50+ Years
experience
Premium Vermont Slate Roofing Solutions
Founded in 1955, Green Stone Slate has been quarrying and crafting premium Vermont roofing slate for over six decades. Our operations are rooted in the renowned Slate Valley region, where geological conditions produce some of the world's highest-quality slate. We specialize in traditional and innovative installation methods, including SlateTec and Nu-lok systems, which reduce roof weight by up to 40% while maintaining structural integrity. Our products meet ASTM S1 standards, the highest classification for roofing slate, and have been independently tested for wind resistance, hail protection, and fireproofing. We provide comprehensive support for architects, contractors, and homeowners through technical documentation, AIA-certified educational courses, and the QuickBid system for project cost estimation.Our commitment to sustainability is demonstrated through long-lasting materials that reduce construction waste and environmental impact. We offer specialized solutions for historic restorations, cedar shake replacements, and modern construction projects requiring durable, aesthetically distinctive roofing. Our team maintains rigorous quality control throughout the quarrying, splitting, and finishing processes to ensure consistent product excellence. With global shipping capabilities, we serve residential, commercial, and institutional clients seeking premium natural stone roofing solutions. Our 100-year warranty reflects confidence in the longevity and performance of our S1-rated slate products.
Services
Slate Roofing
Lightweight Installation
Solar Panel Integration
Stone Cladding
Historic Restoration
Details
- Year established: 1955
Highlights and features
- We offer over 65 years of specialized experience in Vermont slate quarrying and manufacturing
- Our slate meets ASTM S1 standards, the highest classification for roofing slate
- We developed innovative lightweight installation methods reducing roof weight by up to 40%
- We provide comprehensive technical support and AIA-certified educational resources
- Our 100-year warranty demonstrates confidence in product longevity and performance
Associations and certifications
- ASTM International
Services
Slate Roofing
Greenstone Slate provides premium Vermont slate roofing solutions renowned for exceptional durability and aesthetic appeal. Our natural stone roofing materials offer unmatched longevity, with a 100-year warranty and proven performance in extreme weather conditions. The slate's natural cleft surface and wide color variety create distinctive architectural character for residential and commercial buildings.
Lightweight Installation
Our innovative SlateTec and Nu-lok installation systems reduce roof weight by up to 40% while maintaining structural integrity. These methods enable cedar shake replacements without structural reinforcement and improve energy efficiency through enhanced ventilation. The systems maintain the aesthetic appeal of traditional slate while offering modern performance benefits.
Solar Panel Integration
Greenstone offers seamless integration of Certainteed Solstice solar panels with genuine slate roofing. This technology combines renewable energy generation with traditional aesthetics, maintaining roofline continuity. The system preserves the durability and fire resistance of slate while adding sustainable energy production capabilities.
Stone Cladding
Our stone cladding solutions combine Vermont slate's durability with modern installation techniques. The Nu-lok system provides lightweight, cost-effective exterior siding that enhances energy efficiency and building access. This breathable cladding system offers exceptional weather resistance while maintaining natural stone aesthetics.
Historic Restoration
Specialized services for historic slate roof restoration maintain original architectural integrity while incorporating modern improvements. Our expertise includes matching vintage slate colors and textures, repairing graduated roof systems, and implementing lightweight solutions for aging structures. We provide technical guidance for preserving historic buildings' character and performance.
Questions
What makes Greenstone Slate different from other roofing materials?
Greenstone Slate offers 100% natural Vermont stone with ASTM S1 certification, the highest durability rating. Our slate lasts over 100 years, resists fire and hail damage, and requires minimal maintenance compared to other materials.
How does the lightweight installation system work?
Our SlateTec and Nu-lok systems reduce roof weight by up to 40% through innovative interlayments and installation techniques. This maintains durability while enabling cedar shake replacements without structural reinforcement and improving energy efficiency.
Can solar panels be integrated with slate roofing?
Yes, our system seamlessly integrates Certainteed Solstice solar panels with genuine slate roofing. This maintains aesthetic continuity while adding renewable energy generation capabilities without compromising durability or fire resistance.
What warranty options are available?
We provide a comprehensive 100-year warranty covering material defects and performance standards. This warranty applies to all our S1-rated Vermont slate products when installed according to our specifications.
How do I get a project quote?
Use our QuickBid system for fast, accurate project quotes. Architects and contractors can access technical documentation, CAD details, and specification resources through our dedicated support portal.
Are there color and texture options available?
We offer over 1,000 color blends and textures from Vermont quarries, including new options like Vermont Antique Maple. Our specialists assist with selecting combinations that complement architectural styles and environmental conditions.
