Wainscott Masonry Store | Riverhead Building Supply

Masonry store & yard

30 Old Montauk Hwy, Wainscott, NY 11975

631-537-4583
 

Hours
Monday – Friday: 6:30 am -4:00 pm
Saturday: 6:30 am – 12:00 pm
Sunday: closed

Tile showroom

28 Old Montauk Hwy, Wainscott, NY 11975

631-537-4583
 

Hours
Monday – Friday: 7:00 am -4:00 pm
Saturday: 7:00 am – 12:00 pm
Sunday: closed

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Riverhead Building Supply in Wainscott is located at 30 Old Montauk Hwy, just north of Montauk Hwy.

We’re proud to welcome Wainscott Supply to the Riverhead Building Supply family, expanding our masonry presence on the East End. Now, you’ll find the most extensive masonry stock in the Hamptons—along with top-quality landscaping and tile materials, tools, and hard goods—all in one convenient location.
Whether you’re a contractor or homeowner, you can count on RBS for dependable service, premium products, and the area’s best selection.

Services

  • Masonry stone and aggregates
  • Bluestone 
  • Cobblestone
  • Pavers
  • Wall stone
  • Top Soil
  • Mulch
  • Compost
  • Delivery service
  • Kitchen tile
  • Hard tools, sealants, diamond blades, adhesive, etc.
Delivery for items not stocked in Wainscott

This location does not stock lumber or hardware items.

To compliment your masonry and hardscape projects with other materials, reach out to our phone sales team at

Call 1-800-378-3650
Text 1-631-900-3650

 

 

 

 

Or visit our East Hampton location 10 minutes east:

East Hampton Location

Featured masonry products

masonry supply, unilock pavers, masonry supply and hardware


DELGADO STONE

Delgado Stone offers a range of natural stone products for commercial and residential projects of any size. There are more than 20 stone veneer collections available in thin stone veneer and full bed as well as landscape material to complement each one.

stunning backyard pool setting with bluestone pool surround and cobblestone wall with waterfall feature


BLUESTONE & COBBLESTONE

Bluestone treads in 12" & 14" x 4' - 8' lengths. Thermal Blue 24x24 and 24x36. Irregular flagging MC bluestone. Cobblestone regular and jumbo.

Riverhead Building Supply flatbed truck with bags of aggregate sand and stone for masonry projects


CORED CEMENT BLOCK & AGGREGATE SUPER SACKS

Multiple sizes of cored cement block on site. Super sacks of RCA, masons sand, and 3/4 crushed bluestone on site.

Featured showroom displays

TILE DISPLAYS

Browse hundreds of samples across multiple product lines for all your residential tile needs. Our dedicated showroom staff has decades of experience to help East End clients select the right tile for their projects.
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INDOOR MASONRY DISPLAYS

Explore our indoor masonry displays featuring thin stone and brick installations designed to inspire and make material selection easy. See textures, colors, and patterns come to life before you build.

HARD GOODS AND TOOLS

The East End's one-stop shop for all the accessories needed for landscape, masonry and tile projects.
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