If this distance is divisible by 8 in the finished width of a piece of siding you re in luck.
How to add vinyl siding at the bottom.
At the bottoms of windows install under sill trim for horizontal siding and j channel trim for vertical siding.
For vertical siding install j channel trim.
1 2 inch 1 3 cm plywood or osb are common substrates and these are generally covered with roofing felt or another moisture barrier prior to siding the walls.
Install trim under eaves rakes.
Then measure from the eave to the bottom of the existing siding.
Remove any siding or exterior finish that isn t compatible with vinyl siding and make sure the walls are sheathed with a substrate to receive the siding.
For horizontal siding install f channel trim at the soffit and gable rake.