Rollinger Engineering (REi) is a Houston fire protection engineering and code consulting firm established in 1985. It serves industrial and commercial facilities. Its services include fire and building code consulting, high-piled storage and hazardous materials permitting, sprinkler evaluation and hydraulic recalculation, and risk engineering. It also offers expert witness and litigation support. The firm is registered with the Texas Board of Professional Engineers and is led by a California-registered fire protection engineer who is also a licensed Texas PE.