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TimberStrand® LSL Rim Board

Straight, strong and installs fast

TimberStrand® laminated strand lumber (LSL) is an engineered lumber that is consistently straight and true — characteristics that combine to create superior rim board material. TimberStrand Rim Board is dimensionally stable and excels at transferring vertical and lateral loads to the foundation. Sized to fit with TJI® joists, TimberStrand Rim Board is designed to provide critical performance where you need it most.


TimberStrand® LSL with Flak Jacket FRT Protection

A Unique Solution for a Demanding Specification

International Building Code (IBC) requires wood-framed exterior walls of Type III construction to be fire-retardant treated wood. Like many building departments, if you consider rim board as part of the wall framing, you need a rim providing both structural performance and fire retardant protection all in one. TimberStrand LSL with Flak Jacket FRT protection is the perfect solution. Flak Jacket FRT protection:

  • Allows all the benefits of TimberStrand LSL Rim design properties, including fastener values, with no reductions required
  • Alleviates dimensional stability and compatibility challenges
  • Is non-corrosive to fasteners, hangers, and connectors

TimberStrand Rim with Flak Jacket FRT Protection is not sold in all areas.  Ask your TM about availability near you.

Product Literature

  • 1500 - Fire-rated Assemblies and Sprinkler Systems
  • tj-9020 - Specifier's Guide for Trus Joist Beams, Headers, and Columns - California
  • tj-9003 - Specifier's Guide for Walls
  • tj-1020 - Preservative Treatments Approved for Trus Joist Engineered Wood Products
  • tj-8000 - Specifier's Guide for Trus Joist Rim Board
  • tj-9505 - Specifier's Guide for Trus Joist Beams, Headers, and Columns - West Canada
  • csg-tjcan12 - Simpson Connector Guide for Trus Joist Products
  • csg-tj14 - Simpson Connector Guide for Trus Joist Products
  • 5036 - USP Connector Guide for Trus Joist Products
  • 9010 - TimberStrand LSL Stair Stringers and SturdiStep Stair Treads Specifier’s Guide
  • tj-8500 - TJ® Rim Board Guide for Canada
  • as-ts - Architectural Specifications: TimberStrand
  • as-tjign - Trus Joist Product Specification General Notes
  • gc-008 - Green Approved Product: StrandGuard TimberStrand LSL
  • gc-004 - Green Approved Product: TimberStrand LSL, Parallam PSL, Microllam LVL
  • 1505 - Questions and Answers About Adhesives and Formaldehyde Emissions
  • 1504 - Questions and Answers About Mold
  • env-1000 - When Is The Best Time To Make A House Green?
  • env-timberstrand-osb - Product Environmental Profile - Timberstrand & OSB
  • 9030 - Floor Framing Standards Guide: A Framer’s Guide to the Installation Process
  • tj-9001 - Installation Guide for Floor and Roof Framing with TJI 110, 210, 230, 360 and 560 Joists
  • csg-tjcan12 - Simpson Connector Guide for Trus Joist Products
  • csg-tj14 - Simpson Connector Guide for Trus Joist Products
  • 5036 - USP Connector Guide for Trus Joist Products
  • tj-9510 - Installation Guide for Floor and Roof Framing with TJI s31, s33 and s47 Joists – East Canada
  • tj-9510f - Guide du constructeur pour les solives TJI s31, s33 s47 – Est du Canada
  • tj-9001p - Installation Guide for TJI 110, 210, 230, 360 and 560 Joists (in Punjabi language)
  • tj-9001s - Guia de instalación para armazones de entrepisos y techos con viguetas TJI 110, 120, 230, 360 y 560
  • tj-9010 - Product Overview: TJ Insulated Products
  • tj-4030 - Trus Joist Products: The Industry’s Choice for Multi-Family and Light Commercial
  • osb-4025 - SturdiStep Stair Treads
  • tj-8508 - TimberStrand LSL with Flak Jacket FRT
  • tb-150 - 1-1/8″ TJ Rim Board – Header and Cantilever Applications
  • tb-304 - Deck Ledger Attachment to Rim Board
  • tb-206 - Fastener Spacing for Trus Joist Products
  • tb-105 - Garage Floor Design Guidelines
  • tb-219 - Large Concentrated Loads on Rim Board
  • tb-250 - Large Concentrated Loads on Rim Board
  • tb-112 - Moisture Effects on Weyerhaeuser Engineered Wood Products
  • tb-305 - Resawing Microllam LVL, Parallam PSL and TimberStrand LSL Products
  • tb-703 - Stair Stringer Tables for 1-3/4″ 1.55E TimberStrand LSL
  • tb-754f - Tableaux pour les murs en TimberStrand LSL dans la construction de bâtiments de hauteur moyenne
  • tb-750 - TimberStrand LSL Rim Board Header Table
  • tb-754 - TimberStrand Wall Tables for Mid-Rise Construction
  • tb-222 - TimberStrand® LSL with Flak Jacket® FRT Protection for Rim Board Applications Spanning Openings
  • tb-223 - TimberStrand® LSL with Flak Jacket® FRT Protection Frequently Asked Questions
  • 1507 - Product Transportation, Handling and Storage
  • tj-1013 - Trus Joist No Red Tag Guarantee
  • tj-1010 - Trus Joist Product Warranty Certificate
  • tj-1005 - Trus Joist StrandGuard TimberStrand LSL Warranty
  • tj-1008 - Trus Joist TimberStrand LSL Warranty
  • tj-1002 - Trus Joist TJ Rim Board Warranty
  • osb-1008 - Weyerhaeuser 1 1⁄8″ Rim Board Warranty