We install fiberglass and steel entry doors, interior doors, storm doors, sliding, and hinged patio doors, and custom doors.

Every homeowner is entitled to great, polite service and the best products on the market. This is why our entry door inventory is constantly being refreshed to ensure it includes the newest and best selection of energy-efficient, high-performance front, back, storm, and patio doors. We’re confident that every homeowner can find the perfect replacement entry door option for their Long Island home.

Our door replacement and installation process are constantly being refined. We can now ensure that most jobs are completed in one day. The Zajac Home Improvement team makes sure each door is installed properly and sized for its specific doorway opening to maximize coverage, energy efficiency, weather protection, and of course – attractiveness. We sell and install entry doors, French doors, interior doors, sliding patio doors, and storm doors across Connecticut, Long Island, and New York City. All jobs are eligible for our 0% financing promotion. We utilize products manufactured by a number of prominent companies including Andersen, Jeld-Wen, Marvin, Masonite, Mathews Brothers, Mi, Pella, ProVia, Reeb, Simonton, ThermaTru, and Wincore.