2015 New Hampshire Revised Statutes
Title XXXI - TRADE AND COMMERCE
Chapter 347 - INSPECTION OF LUMBER
Section 347:9 - Clapboards.

    347:9 Clapboards. –
    I. All shaved pine clapboards shall be made of good sound timber, clear of sap; and all shaved clapboards shall be free from shakes and worm holes, straight, well shaved and of the following dimensions: full 5/8 of an inch thick on the back, 5 inches wide and 4 feet 6 inches long.
    II. All sawed clapboards shall be of the following descriptions, and shall be known as clear, sap-clear or merchantable.
    III. Clear clapboards shall be sawed from good timber, and shall not be less than 4 feet 2 inches in length, 5 inches in width and 1/2 inch thick on the back, and shall be free from knots, worm holes, shakes and rot. Pine clapboards shall also be free from sap.
    IV. Sap-clear clapboards shall be of the same dimensions and quality as the clear clapboards, but need not be free from sap.
    V. Merchantable clapboards shall be of the same length, from 4 to 5 inches wide and shall be free from rot, shakes, worm holes and broken or loose knots.
    VI. Two pieces of either of the above descriptions, neither of which shall be less than 30 inches long, or 3 pieces, neither of which shall be less than 2 feet long, shall be allowed and counted as one clapboard; but there shall be at least 90 whole clapboards in every 100.

Source. RS 106:8. CS 109:8. GS 120:9. GL 131:9. PS 128:9. PL 167:9. RL 201:9.