Welcome to Riverhead Building Supply
Home improvement professionals and homeowners look to us for a broad range of building supply products and specialty services. Providing the highest quality products and customer service is our main objective.
Find Marvin Windows and Doors at Riverhead Building Supply. Marvin is an industry leader in product innovation and energy efficiency, offering the most extensive window and door options. Experience Marvin's expert craftsmanship and superior materials for yourself. Visit one of our convenient locations on Long Island and speak with a design expert. Our consultative approach simplifies the selection process, enabling our customers to select the products and features needed to make each project as unique as they are.
We have everything you need to make your project easy from start to finish. Our experts can help guide you through even the toughest projects. Enter your contact information and project needs to the right and one of our Marvin experts will contact you.
Packed with features that add value, the Clad Ultimate Glider breathes new life into this classic window style. The new feature-rich Glider offers patent-pending exclusive hardware, a new design, high performance and ease of installation. Providing peace of mind and ease of operation, the revolutionary auto-locking feature automatically engages when the window is closed, then the Glider unlocks and opens with one simple, one-handed motion. With its many features, options and applications, the Clad Ultimate Glider will give homeowners, builders and architects a new reason to take a fresh look at gliders.
Painting windows and doors can be tedious and time-consuming. Having them painted after delivery adds time and cost to a project. It often requires removing hardware and leaving the windows or doors open while the paint dries. To help solve these issues, Marvin® offers a white Painted Interior Finish option on all Marvin pine windows and doors with a wood or clad exterior. The white interior finish meets or exceeds industry standards and is applied using a state-of-the-art process that is environmentally friendly. It is also warranted to be free from finish defects for five years from the original date of purchase. Discover the quality, durability and convenience of Marvin's newest option.