Interior & Exterior Door Services on Long Island

Your Doorway to Quality and Security
At NJM Mechanical and Contracting, we understand that a door represents much more than just an entryway. It stands as the first impression of your home, a line of defense for your family, and an essential design feature that elevates the beauty of your living spaces. Proudly serving all of Long Island, we specialize in professional installation, repair, and replacement of both interior and exterior doors crafted for performance, beauty, and durability. With decades of experience, a commitment to craftsmanship, and a passion for helping homeowners create safer, more stylish spaces, NJM Mechanical and Contracting is the trusted name for door services across Nassau and Suffolk Counties.

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Our Comprehensive Door Services Include:

Interior Door Installation & Replacement

  • Bedroom and bathroom doors for privacy and functionality
  • Closet, pantry, and utility room doors
  • French doors for an elegant touch
  • Sliding barn doors and pocket doors to maximize space
  • Custom-designed doors to match your interior style

Exterior Door Installation & Replacement

  • Front entry doors to enhance curb appeal and security
  • Sliding glass patio doors to connect your indoor and outdoor spaces
  • Storm doors for added protection against the elements
  • Screen doors for fresh air without the bugs
  • Custom wood, fiberglass, and steel doors, available in a variety of finishes and styles

Door Repairs and Upgrades

  • Correcting sagging, sticking, or misaligned doors
  • Replacing worn-out weather stripping to boost energy efficiency
  • Upgrading door locks and security hardware
  • Custom retrofitting to update older homes with modern options

Why Homeowners Across Long Island Choose NJM Mechanical and Contracting:

  • Local Expertise: Our team understands the architectural styles and seasonal challenges unique to Long Island.
  • Top-Tier Materials: We partner with leading manufacturers to offer you doors that are as reliable as they are attractive.
  • Tailored Solutions: Every project is approached with a customized plan that fits your home's specific needs and design preferences.
  • Prompt and Professional Service: We respect your time and property, ensuring every project is completed efficiently and with care.
  • Long-Term Value: Our installations and repairs are designed to provide lasting performance, enhancing your home's value and livability.
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From initial consultation to the final finishing touches, NJM Mechanical and Contracting is committed to exceeding your expectations with superior service and outstanding results.

Take the First Step to a Stronger, More Beautiful Home

Whether you are upgrading a single door or planning a full renovation, NJM Mechanical and Contracting is ready to bring your vision to life. Experience the peace of mind that comes from working with a trusted local contractor dedicated to your satisfaction.

Proudly serving Long Island, including Nassau County, Suffolk County, and surrounding areas. Your new door is just a phone call away!