Manufacturer’s Warranty Inspection Did Not Create a Duty to Protect Building Owner From Contractor’s Installation Defects
Authors: Jonathan S. Forester and Jennifer L. Mura
St. Charles-Guillot Investment, L.L.C.; Luling Living Center, L.L.C. v. One Source Roofing, Inc.; Jasper Contractors, Inc.; RoofClaim.com, L.L.C.; GAF Materials, L.L.C., No. 25-30326, 2026 WL 2583067 (5th Cir. Sept. 1, 2026).
Performing an inspection of a contractor’s work is not the same as assuming responsibility for it. In St. Charles-Guillot, the Fifth Circuit held that a roofing manufacturer who inspected a roof for the limited purpose of deciding whether to issue a warranty did not assume a duty to protect a building owner from the contractor’s defective installation. Although unpublished, this opinion is instructive on how courts may limit assumed duties where a party’s role and authority are narrow.
St. Charles-Guillot Investment, L.L.C. and Luling Living Center, LLC (collectively, “Luling”) owned and operated a nursing home in Luling, Louisiana. In April 2021, Luling hired One Source Roofing, Inc. (“One Source”) to replace the roof. One Source purchased roofing materials from GAF Materials, LLC (“GAF”) and after installation asked GAF to issue a “Guarantee.” GAF inspected the roof, identified and pointed out a “hollow spot,” but determined the roof met minimum requirements. GAF issued the Guarantee to One Source who then issued it to Luling. Four months later, Hurricane Ida struck Luling. Luling alleged the roof became detached during the storm due to One Source’s installation and destroyed the building’s interior. Luling sued One Source and GAF, among others. The district court granted GAF’s motion for summary judgment and Luling appealed.
On appeal, the Fifth Circuit addressed whether GAF owed a duty to protect Luling from One Source’s installation. The Court explained that under Louisiana law, a defendant assumes a duty when it undertakes to render services to another that it should recognize as necessary to protect a third person. Whether the defendant “should recognize” that need turns on the scope of its involvement, the extent of authority, and underlying intent. The Court emphasized that inspections or safety recommendations do not create a duty where the defendant lacks authority to compel or perform remedial work.
The Court found GAF’s involvement was minimal as GAF had no contract with Luling and did not supervise One Source’s work. GAF’s authority was also limited to deciding whether to issue the Guarantee. GAF had no control or authority to compel any repairs or remedial work and the inspection was not intended to assess whether the roof could withstand hurricane-force winds. Considering GAF’s limited involvement, lack of authority to remediate or direct repairs, and the inspection was for warranty purposes only, the Fifth Circuit held that GAF did not assume a duty to protect Luling from One Source’s allegedly defective installation. The Court therefore affirmed summary judgment in favor of GAF.
This decision confirms the principle that assumed duties to third parties have limits. A warranty inspection does not automatically create a duty to identify a contractor’s every defect. The analysis turns on the actual level of authority and control. A manufacturer or supplier that performs a limited warranty inspection but lacks any authority to direct the work or compel repairs does not assume responsibility for another party’s defective work.
