Technical Directory

The following is a list of all publicly available DrJ Research Reports (DRR) for DrJ Engineering clients. If you wish to view DrJ Certification Technical Evaluation Reports (TER) or Listings, please visit the DrJ Certification Report Directory.

No.	Report	Title
DRR 23-0147	Report PDF	TechWood 4400 (TW4400) Wood Protection Treatment Approved Alternative to Fire-Retardant-Treated Wood
DRR 1410-06	Report PDF	Foam Plastic Insulating Sheathing Used as an Air Barrier Material in an Air Barrier Assembly
DRR 1410-05	Report PDF	Foam Plastic Insulating Sheathing Products & Accessories Used as a Code Compliant Water-Resistive Barrier (WRB) System
DRR 1205-05	Report PDF	Construction Details for the Use of Foam Plastic Insulating Sheathing in Light-Frame Construction
DRR 1202-04	Report PDF	Foam Plastic Insulating Sheathing Products in Exterior Walls of Type I, II, III, or IV Construction
DRR 1202-03	Report PDF	Foam Plastic Insulating Sheathing Products in Exterior Walls of Type V Construction
DRR 1202-01	Report PDF	NFPA 285 Tested Assemblies Using Foam Plastic Insulating Sheathing Products