Vent design and balanced intake affect resistance to snow entry. GAF explains that resistance to rain does not automatically establish resistance to wind-driven snow.
GAF technical bulletin: Ensuring maximum protection against snow infiltration with ridge hip or off ridge vents.
What this means for your roof
Vent design and balanced intake affect resistance to snow entry. GAF explains that resistance to rain does not automatically establish resistance to wind-driven snow.
A useful question for your contractor
Ask whether the selected vent has the appropriate filter or screen and a compatible ventilation layout.
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 dated: March 31, 2026. This is the date of the manufacturer source, not a claim that this website guide existed on that date.
Read GAF: Ensuring maximum protection against snow infiltration with ridge hip or off ridge vents
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.