Business Details
50+ Years
experience
Trusted Stone Supplier in the Washington Area
Founded in 1938, Irwin Stone has built a legacy as a trusted supplier of high-quality stone products in the Washington metropolitan area. Our decades of experience serving contractors, landscapers, and homeowners have solidified our reputation for exceptional value and service. We offer a comprehensive selection of flagstone, building stone, boulders, gravel, and specialty products, all available at competitive prices. Our knowledgeable team provides expert guidance to help clients achieve their project goals efficiently. With two convenient locations in Rockville and Frederick, Maryland, we combine accessibility with reliable delivery services across the Mid-Atlantic region.Our commitment to quality ensures every customer receives durable, aesthetically pleasing materials that meet their specific needs. We pride ourselves on maintaining the same standards of integrity and customer focus established by our founder, Jack T. Irwin. Through generations of family ownership, weve remained dedicated to innovation while preserving traditional craftsmanship. Our ability to source niche products and provide personalized solutions sets us apart in the industry. Whether serving large-scale contractors or DIY homeowners, we prioritize transparency, affordability, and long-term customer satisfaction.
Services
Flagstone Supply
Building Stone Sales
Gravel Delivery
Boulder Procurement
Stone Fabrication
Details
- Year established: 1938
Highlights and features
- We offer over 80 years of expertise in stone supply and landscaping solutions.
- Our competitive pricing matches contractor rates for homeowner accessibility.
- We provide reliable delivery across the Mid-Atlantic region with specialized equipment.
- Our staff includes third-generation stone industry specialists with quarry knowledge.
- We maintain a vast inventory of over 20 gravel varieties and specialty stone products.
What people say
Exceptional stone quality
Competitive contractor pricing
Expert product knowledge
Reliable delivery service
Unique product availability
Services
Flagstone Supply
Our flagstone products offer durable, low-maintenance solutions for patios, walkways, and entrances. Available in irregular shapes or geometric cuts, our selection includes blue, gray, buff, and tan varieties. Homeowners benefit from our hands-on approach allowing personal stone selection to ensure perfect color and quality matches for long-lasting outdoor spaces.
Building Stone
We provide natural building stone and thin veneer options for home exteriors, fireplaces, and retaining walls. Our 15+ varieties include weathered fieldstone and formal ashlar styles. Expert staff helps match local architectural aesthetics while offering sustainable solutions that increase property value through timeless durability and minimal maintenance requirements.
Gravel Delivery
With over 20 gravel varieties, we supply solutions for driveways, drainage systems, and decorative gardens. Our crushed stone options provide erosion control while pea gravel offers comfortable pathways. Delivery services use specialized equipment to handle bulk orders up to 3,000 lbs, supporting both large contractors and DIY projects with precise quantity requirements.
Boulder Procurement
We source decorative and functional boulders for garden features, waterfalls, and property protection. Our Pennsylvania and Lake George varieties serve aesthetic purposes while providing practical solutions like driveway edging and foundation protection. Expert guidance ensures proper sizing and placement for lasting landscape impact without maintenance concerns.
Stone Fabrication
Our fabrication services address unique project needs through specialty stone sourcing and precise cutting. With access to quarries nationwide, we fulfill requests for non-standard materials while maintaining quality control. This service supports both historic preservation projects and modern designs requiring specific dimensional accuracy or rare stone characteristics.
People
Brian Kelly
Co-Owner
Brian Kelly, grandson of founder Jack Irwin, has worked at Irwin Stone since 1981. He manages daily operations across both locations and specializes in sourcing unique stone products from quarries nationwide to meet customer specifications.
Steve Kelly
Co-Owner
Steve Kelly, also a grandson of Jack Irwin, returned to the family business in 1996 after corporate experience. He focuses on business operations and large project coordination while maintaining the company's commitment to quality service.
Questions
What stone products does Irwin Stone offer?
We carry flagstone, building stone, thin veneer, boulders, gravel, and specialty products like Eldorado Stone. Our inventory includes over 20 gravel varieties and 15 stone types for residential and commercial applications.
Do you deliver outside the Washington area?
We deliver throughout Maryland, Northern Virginia, and Washington, D.C. With advance notice, we can accommodate deliveries as far as Richmond and Delaware beaches using our specialized transport equipment.
Can homeowners purchase directly?
Yes, while we primarily serve contractors, we welcome homeowners. Our staff provides expert guidance to help DIY customers select appropriate materials and quantities for their specific projects at competitive pricing.
What are your seasonal hours?
Regular hours are Monday-Friday 7 AM-4 PM, Saturday 7 AM-12 PM. Winter hours may slightly vary. Both locations are closed Sundays and major holidays including Labor Day weekend as specified.
How do you ensure stone quality?
We allow personal stone selection to verify quality. Our flagstone undergoes inspection to eliminate cracked or damaged pieces. We maintain relationships with quarries to ensure consistent supply of high-grade materials.
Do you offer installation services?
We focus on material supply rather than installation. Our staff provides technical guidance on proper installation techniques and can recommend trusted contractors for complex projects requiring professional execution.
