New York’s # 1 Source For
Masonry Supplies
Construction Supplies
Bulk Materials
We’re here to consult at any level of municipal development,
commercial construction, hardscaping, and home
development projects.
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YOUR LLOYD HARBOR MASONRY SUPPLY COMPANY
9 Brothers Building Supply is your Lloyd Harbor masonry supply company! A passionate family affair serving since 1980; offering the best outdoor living, masonry supplies, and bulk landscape supplies. We serve and deliver to Long Island and the 5 Boroughs of NYC.
Make Plans Reality
Realize your visions with 9 Brothers Building Supply’s premium product categories. In the realm of masonry, discover a range that blends timeless craftsmanship with modern design, ensuring lasting beauty. Elevate outdoor spaces with resilient hardscapes, from elegant stone veneers to durable pavers.
For construction projects, find top-quality materials meeting the highest standards. Whether you’re a contractor or DIY enthusiast, our construction materials provide a foundation for success.
Transform landscapes with our bulk materials—mulch, topsoil, rocks, and sand. Tailor your outdoor space with precision, cultivating gardens, crafting pathways, or constructing structures. At 9 Brothers, we go beyond products; we’re your partner in turning plans into reality.
Make Plans Reality with us—your trusted catalyst for bringing visions to life. Explore possibilities, embrace potential, and experience excellence in every step of your project journey.
Outdoor Living Products
Our Partners
Construction Product Brands
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4 Seasons Ties
Explore 4 Seasons Ties at 9 Brothers Building Supply – Exceptional concrete forming solutions for sturdy structures, ensuring reliability in every build.
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ADA Solutions Inc
Introducing ADA Solutions, Inc. at 9 Brothers Building Supply – Pioneering tactile warning surfaces for enhanced accessibility, safety, and inclusivity in design
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Husqvarna
Welcome to the world of Husqvarna Construction Products at 9 Brothers Building Supply – Precision tools for superior construction performance and efficiency.
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Laticrete
Discover Laticrete Products at 9 Brothers Building Supply – Innovative bagged concrete solutions for robust, lasting structures. Elevate your builds with confidence.
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MAX Tools
Dive into the world of MAX Tools Products at 9 Brothers Building Supply – Redefine your construction experience with cutting-edge rebar tying power tools.
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Monarch
Since 1960, Monarch Materials Group has been providing great products at affordable prices.
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Sika
Sika was founded in Switzerland more than 100 years ago. It has become a global leader when it comes to reinforcing systems, sealing, adhesives, and other products.
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Smart Vent
A top manufacturer of foundation vents, Smartvent offers some of the best products on the market today.
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Stego
Discover Stego Vapor Barriers at 9 Brothers Building Supply – Unparalleled protection for structures, ensuring durability, performance, and peace of mind.
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W.R. Meadows
W. R. MEADOWS, INC. designs, manufactures, and markets high quality products and for today’s construction professionals. All of W.R. Meadows’ products are sold through an authorized distribution network.
Send us a Message
Stop in or get in touch!
70 Comsewogue Rd SUITE 9 Setauket-East Setauket, NY 11733 Phone: (631) 928-4665