Door Installation
Downtown Doors & Security installs and replaces residential and commercial doors throughout Brooklyn and Manhattan — entry and interior doors for homes, and storefront, office, and fire-rated doors for businesses. Every install is measured, fitted, and hung so the door seals, swings, and locks correctly from day one.
Door installation is more than hanging a slab: it's measuring the opening, checking the frame is square and plumb, fitting the door with correct clearances, and setting the hardware so the door seals against weather and locks securely.
We install entry doors, interior doors, and specialty doors for homes, plus commercial, storefront, and fire-rated doors for businesses — replacing an existing door or fitting one into a new or modified opening.
When you need it
- An existing door is beyond economical repair — warped, rotted, or badly damaged
- You're upgrading for security, energy efficiency, or appearance
- A break-in or accident damaged the door and frame
- A business needs a code-compliant or fire-rated door for an entry or exit
- You're renovating and need doors fitted to new openings
How it works
- 1
Measure & assess the opening
We confirm the opening is square and plumb and take precise measurements so the new door fits properly instead of being shimmed to fit.
- 2
Recommend the right door
We help you choose a door suited to the use, exposure, and any code requirements — including fire-rated assemblies where required.
- 3
Install & hang
We set the frame, hang the door with proper clearances, and fit locks, closers, and weatherstripping.
- 4
Adjust, seal & verify
We fine-tune the swing, confirm a clean seal and secure lock, and clean up the work area.
How pricing works
Every door installation job is priced after a free on-site assessment — no guesswork and no surprises. We diagnose the real issue, explain your options in plain language, and give you clear pricing before any work begins.
Frequently asked
Do you supply the door or do I?
Either works. We can source and supply the door to spec, or install a door you've already purchased. We'll advise on the right type before anything is ordered.
Can you install a fire-rated door for my business?
Yes. We install code-compliant, fire-rated door assemblies for commercial and multi-unit buildings where they're required. We'll confirm the rating and hardware needed for your opening.
Need it handled today?
Call for same-day service across Brooklyn and Manhattan, or send a few details and we'll get right back to you.