Riverhead Building Supply is your top source for TimberTech’s low-maintenance, high-end railing systems. TimberTech composite railing has a large variety of profile and infill options, is stronger than wood, and never needs to be stained. Ideal for decks, stairs and more. View our TimberTech collections below.

AZEK Premier PVC Railing Collection riverhead building supply

Premier Rail®

Historic beauty meets modern technology in this classic rail boasting superior strength.

TimberTech Evolutions Rail® Contemporary Composite Railing riverhead building supply

Contemporary Rail

Bring a linear, high-style look with a low-maintenance sensibility to your deck.

TimberTech Evolutions Rail® Builder Composite Railing with Metal Balusters riverhead building supply

Builder Rail

Achieve a dramatic look at a value-conscious price point with affordable metal infills.

AZEK® Reserve PVC Railing riverhead building supply

Reserve Rail™

Impress guests with a generous architectural profile featuring an extra-wide top rail.

AZEK® Trademark™ PVC Railing Collection riverhead building supply

Trademark Rail™

Gently rounded contours comfortably fit the hand and subtly finish to frame your deck. 

TimberTech RadianceRail Composite Railing riverhead building supply


With its subtly sculpted top and curved edging, this railing is beautiful and functional.

TimberTech RadianceRail Express Composite Railing riverhead building supply

RadianceRail Express®

Designed to combine the look and feel of real painted wood with fast and easy installation.

AZEK® Impression Rail Collection riverhead building supply

Impression Rail®

Maintain sleek sightlines with this aluminum rail featuring a narrow, minimalist profile.