Roof wedges are used for installing roof jacks on pitched roofs. If the pitch of the roof jack doesn't match to pitch of the roof. 

Roof Wedge / Sloped Roof Flashing - 2.5 inch / 12 inch:

• Combine roof wedges with flat roof jacks to install them on sloped roofs.
• Ensure the pitch of the roof wedge matches your roof's pitch. Refer to the "Roof Pitch Examples" in the documents section below.
• Roof wedges can also be used with pitched roof jacks on steeper roofs. Combine the pitch of the roof wedge with the roof jack to determine the suitable roof pitch for installation.
• Note that roof jacks have some flexibility. Refer to the roof jack product highlights for the range of pitches the roof jack flange can adapt to without additional accessories.