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New sliding glass door panel being installed at a waterfront Florida home

Sliding Door Installation in St. Augustine, FL

New sliding glass doors supplied and installed when replacement is the right call.

We are repair specialists first — but some doors have genuinely reached the end. Crushed frames, obsolete systems with unobtainable parts, or homeowners ready for modern impact glass: when replacement is the right answer, Ancient City Sliding Doors installs new sliding doors with the same precision we bring to repair.

Because we've spent 25 years fixing badly installed doors, we know exactly what a correct installation looks like — square, plumb, flashed, sealed, and adjusted so it still glides a decade in.

New sliding glass door panel being installed at a waterfront Florida home

When Replacement Beats Repair

Our repair-before-replacement philosophy cuts both ways: we'll save a repairable door, and we'll tell you plainly when repair money would be wasted. Frames racked out of square by settling, corrosion through the sill, discontinued systems with no parts channel, and single-pane glass a homeowner wants upgraded to impact-rated — these are honest replacement cases.

You get a straight assessment and a free estimate for both paths whenever both are viable.

Installation Done to a Repairman's Standard

The failures we see in the field — leaking sills, doors that drag from day one, latches that never lined up — trace back to sloppy installation. Ours are measured precisely, set level and plumb, shimmed correctly, sealed and flashed against wind-driven Florida rain, insulated at the perimeter, and adjusted so rollers, lock, and screen operate perfectly before we leave.

We install standard and impact-rated sliding glass doors in two, three, and four-panel configurations to fit your existing opening.

Upgrades Worth Considering

New doors bring real gains for Florida living: hurricane impact glass that protects without shutters, low-E insulated units that tame summer heat gain, modern multi-point locks, and smoother heavy-duty rolling gear. We'll walk you through options and honest trade-offs without upselling.

After installation, you have a local specialist who services what he installs — for the life of the door.

Sliding Door Installation Across Northeast Florida

Ancient City Sliding Doors provides sliding door installation throughout St. Augustine and the surrounding region. Choose your area for local details:

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Sliding Door Installation — FAQ

Should I repair or replace my sliding door?

If the frame is sound and parts exist, repair is usually far cheaper and just as good. If the frame is damaged, corroded through, or obsolete, replacement is the honest answer. We assess free and quote both when both make sense.

Do you install hurricane impact sliding doors?

Yes — impact-rated sliding glass doors are the standard recommendation for coastal St. Johns County and can eliminate the need for shutters on that opening.

Can you replace just my door in the existing opening?

Yes. Most installations fit new doors into the existing rough opening, keeping the project contained and cost-effective.

How long does sliding door installation take?

A standard two-panel replacement typically takes most of a day, including removal, installation, sealing, and adjustment. Larger systems take longer.

Do you service the doors you install?

Absolutely — that's the advantage of buying installation from a repair company. We stand behind the door for the long run.

Request Your Free Estimate

Fast response, up-front pricing, no obligation.

No obligation. We respond fast during business hours (Mon–Sat, 7am–7pm).

Need Sliding Door Installation?

Free estimates, honest pricing, and 25 years of experience across St. Augustine and Northeast Florida. Most repairs are completed in a single visit.

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