Stock and Custom Moulding and Millwork add a touch of elegance to any room.

When it comes to custom millwork, moulding and trim of any kind, Riverhead Building Supply is the place to start. From casings and bases to crown moulding, chair rails and more, you can count on us for quality finishing touches that add elegant details and durability to every project.

Give your home’s interior and exterior a distinct look and feel with our own stock* and custom millwork and moulding, or profiles from WindsorONE, Garden State Lumber, Versatex, Boral and James Hardie. Whether your style is Classic Colonial or Greek Revival, Riverhead Building Supply features a vast array of products designed to transform a house into a home. Choose from a variety of wood species or composites, select from hundreds of profiles, or create your own signature design.

Our Custom Millwork Can Turn Your Ideas and Sketches into a Unique Profile

The type of moulding you use on a job can make the difference between an ordinary finish and one that gives the space a quality feel. We provide the custom moulding and millwork services that turn a standard job into one that both the builder and homeowner can point to with pride.

Deciding which millwork is right for the job is not easy. No matter how intricate the design, our experts can help ensure its proper production. We will advise you and provide customer support every step of the way to ensure that the product fits and performs as intended. We can check to make sure installations are proper. We can even make a template for your custom windows. This frees up valuable time for you to attend to other important matters.

We can make custom profiles to your specifications, with special orders for many wood species including poplar, oak, mahogany and cherry. Mouldings are offered in widths up to 12” and interior or exterior priming can be applied in our shop.

All manufacturing is done on-site in our state-of-the-art facility in Calverton, New York. Orders can be fulfilled quickly and delivered directly to your jobsite.

Why Choose Riverhead Building Supply for Your Custom Millwork?

Some of the benefits of working with our custom millwork shop are:

  • Personalized service
  • Mouldings created to your specifications
  • Many species of wood available
  • Interior and exterior priming can be applied
  • Custom moulding and millwork for any style
  • Faster turnaround

View our portfolio featuring our custom millwork, including beautiful kitchen cabinet moulding and trim, ceiling crown moulding, baseboard moulding, wainscoting, tongue-and-groove bead board and patterns, and other interior and exterior moulding options.

*Stock moulding selections vary by store location.