Roofing Code: Chapter 15Roofs and Roof Structures
Section 1507.2, Steep-Slope Roof Coverings:
This code implies that eaves flashing (ice and water shield) is required on all steep-slope structures in temperate climates. Eaves application should be designed in the following manner:
a. Install a single layer of eaves flashing (ice and water shield) over the wood deck.
b. The eaves flashing shall be applied shingle fashion parallel to the eaves and overhang the drip edge by ¼ to ⅜ inches. Apply the eaves flashing a minimum of 3 feet above the interior wall with enough nails to securely hold it in place. The flashing shall be fastened with galvanized roofing nails; staples will not be accepted.
c. All additional layers shall overlap the underlying flashings at least 2 inches. Apply adhesive to the horizontal joint over the entire length of the flashing.
d. Install eaves flashing at all vertical surfaces a minimum of 8 inches up the vertical surface.
Waterproofing Code: Chapter 18Foundations and Retaining Walls
Section 1813.0, Waterproofing and Dampproofing
Section 1813.4.1, Floors: Floors required to be waterproofed shall be of concrete, designed and constructed to withstand the hydrostatic pressures to which the floors will be subjected.
In buildings subjected to hydrostatic pressure and having a water table that is within 6 inches of the bottom slab, the floors must be constructed of standard concrete. Waterproofing of the slab is completed by application of an approved waterproofing membrane at the bottom of the slab. Joints in the waterproofing membrane shall be lapped and sealed in accordance with the manufacturer’s installation instructions.