Reversing the trial court, the Wisconsin Court of Appeals found the insurer must defend a cross-claim against the insured owner of a building after an explosion occurred. LBC, LLC v Spectrum Brands, Inc., 2023 Wis. App. LEXIS 1251 (Wis. Ct. App, Nov. 30, 2023).

LBC leased commercial property to Spectrum. Spectrum stored lithium on the property. The lithium exploded when it came into contact with water that entered the premises during historic flooding in August 2018. Spectrum remediated the premises, vacated the premises prior to the lease's termination date, and stopped paying rent.

LBC sued Spectrum, alleging that Spectrum negligently stored the lithium and that Spectrum breached the lease. Spectrum counterclaimed, alleging that LCB breached the lease in various respects, that LCB negligent allowed water to infiltrate the premises, and that Spectrum was constructively evicted. LCB tendered the counterclaim to its insurer, General Casualty. The tender was denied and LCB sued.