Combining R19 Tstud™ with Un-Insulated Tstud™ around windows and doors creates a stronger thermal break where energy loss is most common. By minimizing heat transfer through the framing at these openings, the wall assembly improves the effective R-value of the windows themselves, not just the rated performance on the glass. This method supports 2021 energy code and step code targets, delivering a tighter, more efficient building envelope for sustainable construction. #R19Tstud #UnInsulatedTstud