When using logs that are somewhat rough and irregular in shape, the
resulting space between them may be so large that the calking material
cannot be used satisfactorily to fill the opening. In such cases, it
will be necessary to insert "chinking," which usually is applied to the
interior and exterior walls in one of two ways:
1. _Split chinking._--Segments of a log are split out in sizes which fit
the opening and, after being carefully shaped with the ax to make a tight
fit, are securely nailed in position. This kind of chinking requires
considerable work and patience to secure a good appearance.
2. _Pole chinking._--Small round poles may be used to fill the openings
(fig. 25). Usually they are cut in sizes and lengths to fill the opening
from wall to wall. This sort of chinking may be applied rapidly to either
inside or outside walls and makes a neater job than the preceding method.
Unless the logs are thoroughly seasoned these small poles sometimes
have a tendency to pull away from the nails. When the chinking has been
completed, the openings will have been reduced sufficiently in width to
allow the calking material to be applied successfully.
[Illustration: Figure 25.--Pole chinking.]
It is always a serious problem in log construction to devise a practical
method for permanently fastening the plaster daubing in place on both
inside and outside walls. In some instances, shingle nails may be driven
into the logs 2 to 3 inches apart for the full length of the opening or
2-inch wide strips of metal lath may be used and the plaster applied to
fill it. Cattle hair may be added to the plaster to increase its adhesive
consistency and thereby hold it more rigidly in place. Sometimes, wood
strips are nailed on the lower log to hold the plaster in position, as
shown in figure 26, but they are unsightly.
[Illustration: Figure 26.--Wood daubing strips.]