Premier Floors - Manual (Page 19)

19
If the plates are not laid out to the exact desired
dimensions and within 1/8” of level, extensive
panel modifications may be required later.
Dimensions for the foundation and sill plates
(and the walls that follow) are usually the same
as the exterior of the wall panel skins—not
the lumber plate that is inside them. This
is different from stick framing where the
dimensions usually refer to the outside edge of
the framing member.