Door Installation & Replacement

A door that fits right, seals tight, and looks good — it is one of those things you notice every single day.

A door that sticks, drafts, or sits crooked is not just an annoyance — it is a daily reminder that something in your home is not right. At D&J Construction, door installation is treated as precision work, not a quick swap. Every home on Long Island is different, and getting a door to hang properly requires understanding the frame, the structure around it, and what the door actually needs to perform well long-term. That is the starting point on every job.

D&J handles both interior and exterior door installation and replacement across Nassau and Suffolk County. Whether you are replacing a single bedroom door in Hicksville, upgrading a front entry door in Smithtown, or fitting multiple doors through a renovation in Lake Ronkonkoma, the process is the same — careful removal, proper framing assessment, level installation, and clean finishing. Dennis brings over 11 years of experience to every door job and makes sure the hardware, weatherstripping, and casing are all finished correctly before the job is called done.

The right door changes how a space feels and functions. It keeps the elements out, reduces noise, improves security, and adds to the overall look of your home. If your doors are not performing the way they should, D&J is ready to fix that. Call (855) 594-4857 and let us take a look at what your home actually needs.

What We Offer:

Exterior Door Replacement — Full removal and installation of front, back, and side entry doors with proper sealing and weatherstripping.
Interior Door Installation — Bedroom, bathroom, closet, and hallway door installation hung level and fitted cleanly to the frame.
Door Frame Repair & Replacement — Assessment and repair of damaged or warped door frames before new doors are installed.
Hardware & Lock Installation — Handles, locks, hinges, and deadbolts installed correctly and tested before the job is complete.
Door Casing & Trim Finish — Clean interior trim and casing work around every door so the finished look matches the rest of the room.
Pre-Hung Door Installation — Full installation of pre-hung door units including frame, hinges, and all hardware from scratch.

Why Choose D&J Construction for Door Installation & Replacement

Proper Framing Assessment First — Before any door goes in, D&J checks the frame and surrounding structure. Installing a new door into a damaged or uneven frame is a waste of money, and it is not something D&J does.
Owner-Supervised Installation — Dennis oversees every door job personally. That means the level is checked, the swing is right, and the seal is solid before anyone leaves the job site.
Interior and Exterior Experience — D&J handles both inside and outside doors across all types of Long Island homes — older construction, new builds, and everything in between. The approach is adjusted to fit what each home actually requires.
Clean Finish Every Time — The door itself is only part of the job. D&J finishes every installation with proper casing and trim so the door looks like it belongs in the space, not just bolted into a hole in the wall.
11 Years Across Nassau & Suffolk County — Working on Long Island homes for over a decade means D&J has installed doors in every kind of home and frame condition. That experience means fewer surprises and better results on your project.