Mechanically Attached Synthetic Roofing Underlayment Learn more about WeatherTek® Building Products, LLC. Reports The documents listed below assess the code compliance of specific WeatherTek® Building Products, LLC products. IBC Section 104 and IRC Section R104 allow for the use of alternative materials, design and methods of construction. No. Sort descending Report Title Product Name TER 2504-106 Report PDF Sealed PDF WeatherTek® Building Wraps WeatherTek® BWWeatherTek® DWWeatherTek® Plus