Fire Protection Solutions Established in an inlaw’s basement in 1986, Tri State Sprinkler Corporation is a locally owned and operated fire sprinkler contractor. Now based in Londonderry, NH Tri State Sprinkler Corp. prides itself on doing quality work and longstanding relationships with contractors and other small businesses in the region, while consistently providing jobs to dozens in their community. View our services 0 Commercial From its inception Tri State Sprinkler Corp. has been designing, installing, maintaining and servicing fire sprinkler systems in commercial buildings all over New England. These include malls, hotels and office spaces, to name a few. 0 Residential Tri State Sprinkler Corp. was one of the first residential fire sprinkler installers in the region. Since then, projects have ranged from single and multi-family dwellings to condo and apartment complexes in New England’s historic mill buildings. Copyright Tri State Sprinkler Corp. All rights reserved.