Fig. 108. Flashing Fig. 109. Flashed and Counter-flashed
Saddle or comb boards are of various forms. They are used to give the ridge a finished appearance and to turn any water which might happen to strike thereon; also to hold the last course of shingles in place. A simple form is obtained by creasing to the appropriate angle a strip of tin eight inches in width. Place this on the ridge and nail its edges at intervals of 3 or 4 inches. Where boards are used, one board should overlap the other and extend a half inch beyond to turn water from the joint so made. Galvanized ridge rolls may be purchased in stock styles.
55. Finishing Exterior Walls.—With the roof completed, side walls are next covered except where porches are to be attached.
[Fig. 110] illustrates the manner of constructing an exterior wall having a water table and lap siding, also the relation of the various parts of an exterior wall.
Fig. 110-a. Interior Wall Detail
Fig. 110-b. Exterior Wall Detail
A belt course is sometimes used between the first and second stories of a building. Such a course is often constructed like the water table. Like the water table or base, this belt course is furred out in order to throw the course into greater relief. In case this furring is not done, the lower edge of the belt board must be rabbeted to receive the top edge of the siding. Frieze boards, too, are frequently furred instead of being rabbeted. More elaborate belt courses are common.
Fig. 111. Leveling Door Sill