Doors that seal, lock, and look the part
Paragon serves Ocean, Monmouth, Middlesex & Burlington Counties and the Jersey Shore, NJ. Project and cleanup timing depends on scope, product delivery, weather, access, inspections, and current crew availability. The written proposal states the expected schedule. Paragon Exteriors is registered as a New Jersey home-improvement contractor (NJ HIC #13VH13814500). Ask for the current insurance certificate and any trade-license attribution required for the proposed scope.
A door is a small project with an outsized job description: it’s the first thing guests touch, the last thing between your living room and a February nor’easter, and the lock your family trusts every night. We install for all three.
Entry, patio, or storm — what each one buys you
| Door type | Typical installed cost | Where it earns its keep |
|---|---|---|
| Steel entry door | $1,500 – $2,800 | The budget security workhorse — best kept a few miles inland, where salt air can’t rust its edges |
| Fiberglass entry door | $2,200 – $4,500 | The Shore favorite: wood looks without wood rot, immune to salt corrosion, insulates several times better than the solid wood it imitates |
| Sliding patio door | $2,500 – $5,000 | Maximum glass and light for deck and backyard access; modern low-E units end the “cold wall” effect of 1980s sliders |
| French / hinged patio door | $3,500 – $6,000 | The upgrade pick — wider clear opening, true divided-light character, multi-point locking as standard |
| Storm door | $500 – $1,200 (usually added to an entry project) | An air buffer plus rain shield for the door behind it, and a full-view screen when the sea breeze is worth letting in |
What “installed right” actually means
The door on the showroom floor is half the product. The other half happens in your opening, and it’s where cheap installs fail:
- Old unit out, opening inspected — soft or rotted framing at the sill corners gets cut out and rebuilt, not buried
- Sill pan flashing under the threshold, so any water that ever gets in drains out instead of into your subfloor
- Frame shimmed plumb, level, and square — the door latches with a fingertip push, no shoulder required
- Low-expansion foam sealing the jamb gap (stuffed fiberglass is a draft with extra steps)
- Full perimeter weatherstripping, door sweep, and adjustable threshold dialed to a light, even seal
- Stainless or coated hardware and hinges on homes near saltwater
- Project and cleanup timing depends on scope, product delivery, weather, access, inspections, and current crew availability. The written proposal states the expected schedule.
Salt, sun, and sideways rain
Jersey Shore doorways take punishment inland doors never see. Salt air corrodes steel skins, builder-grade hinges, and slider rollers years ahead of schedule. Summer sun on south- and west-facing entries fades finishes and warps wood slabs. And a nor’easter doesn’t drop rain on your door — it drives rain at it for 36 hours, probing the threshold and jamb seals the whole time. That’s why we spec fiberglass or vinyl-framed units near the water, corrosion-resistant hardware as standard, and sill pans on every install — the same storm-first thinking behind how we build coastal roofs for nor’easters.
If your current door whistles in the wind or shows daylight at a corner, you’re paying for that gap on every utility bill until it’s fixed.
Security you can measure
Most break-ins through doors don’t defeat the lock — they defeat the frame. A standard strike plate held by two 3/4-inch screws splits out of the jamb with one kick. Our installs anchor hinges and reinforced strike plates into the structural framing with long screws, hang solid-core or fiberglass slabs that resist flexing, and set deadbolts so they throw fully into the reinforced strike. On patio doors — the classic weak point — we install units with multi-point locks and laminated glass options, plus secondary security bars where you want them.
The fastest curb-appeal win on the house
Nothing changes a home’s face faster per dollar than the front door. Many customers pair a new entry with replacement windows or fold it into a siding project so the whole front elevation lands as one design. If windows are on your list too, our guide to what window replacement really costs in NJ gives you honest numbers before anyone rings your doorbell. Related resources: replacement windows, siding project, and what window replacement really costs in NJ.
Get your itemized number
Your free estimate spells out the door, hardware, flashing, and labor line by line — compare it against any quote and see what the other guy skipped. Current third-party financing options may be available, subject to lender disclosures, terms, and approval for larger door-and-window packages. Related links: financing information and Request your free estimate.
Project planning guide
Answers for planning your project
How much does it cost to install a sliding glass door?
Angi's August 2026 national data places many installations between $1,169 and $4,143. Door size and panels, glass, frame material, structural opening changes, disposal, water damage, sill pan and flashing, interior and exterior trim, screen, hardware, and coastal ratings determine the local price.
Can an exterior or sliding door be repaired?
Hardware, rollers, tracks, weatherstripping, screens, limited trim, and some alignment problems may be repairable. A rotten frame, failed sill, water-damaged wall, distorted slab, unsafe lock preparation, or a unit that cannot be sealed can justify full replacement. The diagnosis should name whether the problem is the door, frame, rough opening, flashing, or surrounding wall.
Storm door installation and replacement
A storm door can add ventilation and protect a primary entry, but it must be compatible with the entry-door finish, sun exposure, opening dimensions, closer, hardware, and water path. Coastal wind exposure increases the importance of anchoring and adjustment. It does not turn a non-rated entry assembly into a hurricane-impact system.
Services available for this type of project
- Door installation
- General door installation
- General door repair
- Sliding glass door installation & replacement
- Storm door installation & replacement
A project may combine several of these services. We inspect the property, confirm priorities, and define the work in a written proposal before construction begins.
