Page 2 Illustration: A few of the buildings we have worked on to keep out rodents.
Figure 6 on page 71. Schematic of the structure of a standard stud wall. Schematic of the structure of a standard stud wall. The figure was redrawn from https://basc.pnnl.gov/resource-guides/double-stud-wall-framing#edit-group-description
Figure 7 on page 75. A collage of photos of a repair on a 1960s era cottage. (A) The two holes found using the methods in Chapter 4 became obvious. The holes had been caulked the year before but the mice had excavated the inadequate caulk. (B) The growing extent of rotted sheathing discovered. The complex joint had allowed water to enter causing extensive rot in the sheathing and studs. (C) Photo shows degraded insulation being removed and electrical wires exposed. The light-colored wood on the other side of the electrical wire is interior paneling. (D) New vapor barrier was placed against the paneling and new insulation added. Note the sistered 2x4s reinforcing the partially rotted studs. Also note the replacement sheathing. In this case, the old sheathing was 3/4 inch (2 cm) shiplap. We replaced it with 3/4 inch (2 cm) exterior plywood. (E) Sheathing replaced and aluminum flashing protecting the sheathing beneath the roof-wall joint – just in case. (F) House wrap installed and overlapped with tar paper at joints.
Figure 9 on page 83. Deer mice have gnawed on the exterior of a building. Note bits of insulation being pulled out as they excavated. The rounded, enlarged opening is about 1/2 inch (1.2 cm) in width.
Figure 10 on page 85. Classic mouse shredding inside a wall. The dark particles were seeping out onto the floor at the bottom of the wallboard (now removed).