(April 28, 2022, 11:01 AM EDT) -- CONCORD, N.H. — The New Hampshire Supreme Court on April 27 affirmed a lower court’s ruling that a commercial general liability insurance policy clearly and unambiguously barred coverage for damages in an underlying negligence lawsuit arising from a plumber’s fall from a staircase that detached from its deck, finding that all claims against the general contractor insured arose out of a subcontractor’s allegedly negligent construction of the staircase....