Observation: Siding is bowed.
Performance Standard: Bows exceeding 1/4 inch in 16 inches are unacceptable.
Corrective Measure: The remodeler will replace any wood lap siding with bows exceeding the performance standard, and finish replacement siding to match the existing siding as closely as practical.
Discussion: If the siding is held by nails into studs and is force-fit during installation, expansion caused by increasing relative humidity may cause bulges or waves. Even with proper installation, siding will tend to bow inward and outward in adjacent stud spaces.
