Interfor is one of the world’s largest forest products companies with operations across North America and customers around the globe. With an annual lumber capacity of approximately 5.2 billion board feet from world-class facilities, Interfor strengthens local economies, builds value for their employees and customers and participate in sustainable forest management with sustainable building materials.

  • P3 Joist Series (Exclusively at our North Carolina Branch)

    The P3 Joist™ is an “I”-shaped engineered wood structural product designed for use in residential and commercial floor and roof construction.

    P3 Joist™ products are prefabricated using SPF MSR lumber flanges and OSB web, which are bonded together with exterior-type adhesives. P3 Joist™ products are limited to an L/480 maximum live load deflection for residential and non-residential floor applications.

    P3 Joist™ products are identified by their depth, followed by their series name PJI, and by a designation such as 40 which relates to the joist’s strength and stiffness. Interfor’s P3 Joist™ products are manufactured to strict tolerances with the following characteristics.

    All Interfor’s P3 Joist™ products are manufactured in conformance with ASTM D5055.

    SeriesFlange (Nominal Size)Flange (Actual Size)Web ThicknessI-Joist DepthLengths
    402x31.5"x2.5"3/8"9 1/2", 11 7/8", 14", 16"8' to 48' in 2' increments
    602x31.5"x2.5"3/8"9 1/2", 11 7/8", 14", 16"8' to 48' in 2' increments
    65 2x41.5"x3.5"3/8"11 7/8", 14", 16"8' to 48' in 2' increments
    802x41.5"x3.5"7/16"9 1/2", 11 7/8", 14", 16", 18", 20", 24"8' to 48' in 2' increments
    902x41.5"x3.5"7/16" 11 7/8", 14", 16", 18", 20", 24"8' to 48' in 2' increments