Siding. Preparatory to siding, a siding stick should be made. Such a stick is made by planing parallel edges upon a piece of ⅞ inch stock about 1 inch in width. Upon this stick marks will be made which will indicate the spacing of the siding; these marks being transferred to corner boards and casing edges, Fig. 113. To lay off this stick a given space is taken, water table drip cap to the lower edge of a window sill for example. (1) This space may be transcribed upon the stick easiest by setting the stick upon the drip cap and against the casing edge, marking under the sill upon the stick. (2) This space is "stepped off" by means of a pair of dividers set to the amount of exposure desired. Exposures will run from 4¼ to 4¾ inches on ordinary lap or bevel siding.
Fig. 112. Plumbing Frame.
Fig. 113. Using Siding Stick.
(3) Should there be a remainder, and there almost always is, the exposure must be increased or decreased, whichever is necessary, an amount sufficient to give an equal or even number of divisions. In practice this amount is found by stepping off as suggested and then making necessary adjustments by guess and again stepping. This is continued until the desired result is attained. The difference is thus divided equally over the whole space instead of over the last courses as in shingling. In a similar manner a stick, or another space of the same stick is laid off and stepped for the space between the bottom of the window sill and the top of the drip cap above the head casing of the window, etc. On long lateral spaces this stick will be used to keep the lower edges of the boards in position between the casings, by transferring its marks to the building paper, stepping down from one of these marks with a pair of dividers to the lower edge of the siding board being placed. (4) A bunch of siding boards should have one end of each sawed square across the face, but sawed under on the back side slightly so as to insure a fit on the surface. (5) One end is next fitted, with block plane if necessary, after which (6) the length is marked by turning the board upside down and marking on the lower edge of the board, which is uppermost, with a knife, Fig. 114. Another way to mark length is indicated in Fig. 115. This tool is called a siding hook or tool and this method possesses the advantage of caring for any lack of squareness in the frame or trim.
Fig. 114. Marking Length of Siding.
Fig. 115. Using Siding Hook.
In nailing, care must be taken to place the nail so that it shall pass thru both boards where lapped. Under windows it will be necessary to trim off part of the upper edges of the siding boards. Saw kerfs at either side of the part to be cut, and a sharp, deep knife scoring along a straight-edge should be used to outline the part to be removed. To determine the amount to be removed, set the dividers to the amount of spacing used for the boards in the space under the window, plus the depth of rabbet, or groove in the under side of the window sill into which the upper edge of the siding board must fit. Set off this amount on the siding board from the butt or under edge at each end of proposed cut, and connect with straight-edge; scoring with knife.
Occasionally the carpenter is called upon to side a circular tower or rounded corner of a building. That the lower edge of each board may rest in a horizontal plane it will be necessary to shape that edge before applying the board to the side of the building. To determine the amount of curvature to give such an edge proceed as follows: (1) Plot a curve to represent the plan of the tower, Fig. 116. Draw this upon a scale sufficiently large and make use of accuracy such as will insure a result equal to the requirements of the occasion. (2) Draw the line A-B of indefinite length. (3) Place a section of a clapboard in the position it will have on the sheeting, as at abc, Fig. 116, and (4) extend a line along the face surface to meet A-B. (5) With a radius equal to B-C describe an arc with B as a center which shall cut the siding board as shown, taking an equal amount off the edge at each end.
Fig. 116. Siding Circular Tower.
Occasionally it becomes necessary to fit a casing against a sided wall. This casing is scribed as indicated in Fig. 117, a pair of sharp dividers being made to follow the contour of the wall with one point while the other marks or scribes the casing. A saw will be used to cut to these lines, sawing under slightly to insure a fit at the face.
Fig. 117. Scribing against Irregular Surface.