U.S. Court of Appeals for the Fifth Circuit
St. Charles-Guillot v. One Source
September 1, 2026
Summary
The court affirmed summary judgment for GAF because GAF did not assume a duty to protect the nursing home from installation defects caused by One Source. GAF's involvement was limited to a warranty inspection, it lacked authority to remediate installation errors, and its inspection was intended only to determine whether the roof met minimum warranty requirements. The court therefore did not reach whether GAF breached any duty it might have owed.