Removing all roofing layers exposes the structural deck for inspection and repair. GAF describes benefits and conditions that require removal, while the locally adopted code must be checked separately.
GAF technical bulletin: Complete roof tear offs for steep slope roofs.
What this means for your roof
Removing all roofing layers exposes the structural deck for inspection and repair. GAF describes benefits and conditions that require removal, while the locally adopted code must be checked separately.
A useful question for your contractor
Ask whether the proposal includes complete removal and how hidden deck repairs are approved.
Ask for the answer to be tied to the actual roof condition and the exact product being installed. Keep the agreed repair or installation detail with your estimate and project photos.
Bulletin revision: February 1, 2021. This is the date of the manufacturer source, not a claim that this website guide existed on that date.
Read GAF: Complete roof tear offs for steep slope roofs
This homeowner summary explains the cited bulletin. The complete manufacturer document and current product instructions govern the installation details. A requirement for one manufacturer or product should not be transferred to another without checking.