Extracellular spaces in connective tissues are therefore more abundant and contain vessels. In connective tissues, the extracellular space is termed the extracellular matrix because products of specialized cells accumulate here.
'J' channels are even improperly used on Fiber Cement Siding! Note: The actual examples below are not indicative of every siding job with 'J' Channels. All photos below are from the same area on the same wall of one house. This is the northeast side of a home located about 2 blocks from the NJ shore.
Soffit Installation: Open Eave J-Channel. You can substitute the F-channel for a J-Channel by simply cutting slots in the nail flange where it would be attached to the wall. Bend the flange back and nail it to the wall.