What type of flashing should be included around the sides of windows?

Jam flashing is specifically designed to be installed around the vertical sides of windows. Its purpose is to direct water away from the window frame and protect the interior from water infiltration. By creating a barrier at the sides of the window, jam flashing helps to ensure that any moisture that may penetrate through the siding or building envelope is effectively redirected outwards, rather than allowing it to seep into the wall assembly or the window opening itself.

This type of flashing is essential for maintaining the integrity of the window installation and preventing water damage. It works in conjunction with other flashing components, such as header flashing, which is placed above the window, and pan flashing, which is positioned beneath the window. J-channel flashing is often related to specific types of siding installations but is not primarily for use around windows. Proper installation of jam flashing, alongside other flashing elements, is key to achieving a watertight seal around windows.