Florida thumb-lock snapped off. Hook bolt won't catch the keeper. Salt-air corrosion seized the latch on the back patio slider. We rebuild, replace, and reinforce sliding glass door locks across PSL, Stuart, Jensen Beach, and Hutchinson Island - same-day, van-stocked.
Sliding glass door lock repair in Port St. Lucie - thumb-lock replacement, hook bolt rebuild, secondary aux lock install (Charley Bar / Loc-Bar / foot bolt). Most jobs 30-60 minutes on-site.
Cost: $120-260 for a single-door thumb-lock or hook bolt swap. Auxiliary locks add $40-90. Hurricane-impact slider hardware can run higher because the keeper geometry is tighter.
Common brands we carry: PGT, CRL, Prime-Line, Wright Products, plus universal hook bolt cartridges that fit most pre-2010 PSL builds.
Florida humidity kills sliding patio door hardware. The original Andersen, Pella, or Marvin foot-bolt latch corrodes inside the frame, the older mortise-style sliding lock stops engaging the strike, or the exterior lift handle snaps off in someone's hand. We see this in nearly every screened-lanai install around Magnolia Lakes and on the older pool-cage slider doors throughout Sandpiper Bay.
The trick is identifying the lock. Andersen E-Series, Pella Architect, and Marvin Ultimate each use different proprietary patio lock cassettes, and the older mortise sliders need a generic 3.5 inch or 5 inch mortise hook bolt. We carry both the OEM cassettes for the common brands and the universal mortise hook bolts so almost every slider is a single-visit fix.
Call (772) 284-5142 with your slider brand if you know it. We will quote before we roll.
Standard mortise hook bolt around $95. Andersen, Pella, or Marvin OEM cassette replacement around $145 to $185 installed.
E-Series, Architect, and Ultimate patio lock cassettes stocked, plus universal 3.5 and 5 inch mortise hook bolts for older sliders.
Replacement foot bolts and exterior lift handles in white, beige, bronze, and brushed-nickel finishes ride on the van.
Slider lock swaps are quick. We do not need to remove the door panel for most jobs.
We can add a secondary pin lock or charlie bar above the existing latch so the slider cannot be lifted out of the track.
Door companies sell whole new slider panels for $1,800. Big-box stores do not stock the cassettes. We are the in-between fix.
Andersen, Pella, Marvin, and the older Acorn / Truth hardware. We bring the right cassette the first visit.
Sometimes the lock is fine and the door is just out of track. We diagnose before we sell you a new lock.
Pre-2000 sliding doors take a generic mortise hook bolt. We carry every common spacing so older doors get fixed same visit.
We add proper secondary security to vulnerable sliders, not just patch the broken latch. Critical for snowbird homes in Magnolia Lakes.
Sliding glass doors in coastal Florida lead a hard life. Salt-laden humidity corrodes the internal hook bolt mechanism, sand and palm debris in the track wears the latch keeper, and UV bakes the plastic thumb-turn until it cracks. Five things break, more or less in this order:
1. The plastic thumb-lock body. The molded thumb-turn that pivots the hook bolt. UV-brittle after 8-12 years on a south-facing or west-facing lanai. Replacement is a 15-minute swap - $120-180 total. We carry Prime-Line and Wright Products universal thumb-lock assemblies that fit most aluminum-frame sliders built between 1985 and 2015.
2. The hook bolt itself. The metal hook that swings out to grab the keeper. Corrosion locks it in the partially-extended position so the door won't latch or won't slide. Full hook bolt cartridge replacement: $160-260 depending on whether your slider needs a brand-specific assembly (PGT, CGI, Custom Window) or a universal cartridge fits.
3. The keeper. The strike that the hook bolt grabs. Bent, worn, or pulled away from the frame. Replacement keeper plus alignment: $90-160.
4. The pull / handle. Separate from the lock body. When the pull breaks the lock often still works but you can't operate it. Universal pull replacement $60-120.
5. The track and rollers. When the door sags on dead rollers the hook bolt can't reach the keeper. Roller replacement isn't strictly a lock repair but we frequently do it in the same visit because customers want the door to actually work. Add $90-180 for a roller swap.
We diagnose all five in the first 5-10 minutes on-site and quote each individually so you can choose what to fix today versus later.
The factory thumb-lock on a sliding glass door is the weakest hardware on the whole house. A determined intruder can pop most consumer sliders in under 30 seconds with a screwdriver and a pry bar. Florida homeowners' insurance underwriters and PSL Police community-watch officers both recommend a secondary aux lock on every patio slider.
Charley Bar. The classic adjustable bar that drops between the moving panel and the fixed jamb. Wright Products WP-CB100 and similar - $40-70 hardware, $30-50 install. Pro: zero modification to the door, removable for cleaning. Con: visible, can be defeated if reachable through a pet door or broken pane.
Loc-Bar / track bolts. Pin-type locks that drop into pre-drilled holes in the upper or lower track. Prime-Line U 9839 and similar. $25-45 hardware, $40-80 install (drilling required). Pro: invisible from outside, more secure than a Charley Bar. Con: each window/door needs its own pre-drilled holes.
Foot bolts. Spring-loaded bolts at the bottom of the moving panel that drop into a keeper in the track. Common factory feature on PGT and CGI hurricane-impact sliders. When the spring fails, the foot bolt won't latch - we rebuild these for $80-140.
Keyed patio locks. Through-the-door keyed locks that work like a deadbolt for the slider. Adams Rite MS1850S in a sliding configuration, or Schlage-branded patio door locks. $180-320 installed. Heavier-duty than anything the factory ships. Worth it on rear sliders that face an unfenced lot or a canal.
Hurricane-impact slider note: PGT WinGuard, CGI Sentinel, and other impact-rated sliders have factory hook bolt geometry tuned to the heavier laminated glass. Aftermarket aux locks have to clear the frame without compromising the impact rating - we know which Charley Bar and Loc-Bar models work with which impact slider lines.
| Service | Typical Price | Notes |
|---|---|---|
| Thumb-lock body replacement (universal) | $120 - $180 | Prime-Line / Wright Products universal fit. |
| Hook bolt cartridge replacement | $160 - $260 | Universal cartridge - PGT/CGI specific runs higher. |
| Keeper replacement + alignment | $90 - $160 | When the strike is bent or worn. |
| Charley Bar / Loc-Bar install | $70 - $130 | Hardware + install - both options available. |
| Keyed patio lock install (Adams Rite-style) | $180 - $320 | Through-the-door deadbolt for slider. |
| Foot bolt rebuild (hurricane slider) | $80 - $140 | Spring + bolt assembly for PGT/CGI impact doors. |
| Roller replacement (full set, single panel) | $120 - $220 | Often required so the hook bolt reaches the keeper. |
| Decision | Doctor Lockout | Full slider replacement | Big-box handyman |
|---|---|---|---|
| Cost | $120-320 most jobs | $1,800-4,800 per door | $180-500 + parts upcharge |
| Time on-site | 30-90 minutes | Half-day to full-day install | Half-day or longer |
| Keeps your existing impact-rated frame | Yes | No - new frame | Depends |
| Brand-specific PGT / CGI parts | Stocked or 2-4 day order | Quoted with new door | Often ordered wrong |
| Secondary aux lock included in scope | Yes if requested | Sometimes upcharge | Rare |
Real person on the phone in under 2 rings. Locksmith on-site in 15-30 minutes. Honest price before any tools come out.
Call (772) 284-5142Most thumb-lock replacements: $120-180. Hook bolt cartridge replacement: $160-260. Adding a Charley Bar or Loc-Bar aux lock: $70-130. Keyed patio door lock retrofit: $180-320. We carry universal hardware on the van that fits most aluminum-frame sliders built between 1985 and 2015.
A locksmith fixes the lock - thumb-turn, hook bolt, keeper, aux locks, sometimes rollers. A window/door company replaces the whole door, the glass, or the frame. If the issue is just that the door won't latch or won't lock, you want a locksmith. If the glass is cracked or the frame is bent, you want a window company. We tell you on the phone which one your situation is.
Yes, for what they are. A Charley Bar makes it physically impossible to slide the moving panel without first removing the bar from inside. It defeats pry-bar attacks and lift-out attacks (the most common slider break-in methods). It does NOT defeat someone willing to break the glass - but most slider intruders go for pry attempts first because glass is loud. The Charley Bar adds the most security per dollar of any slider upgrade.
Not if we install the right model. Charley Bar add-ons that don't pierce the frame don't affect the impact rating. Loc-Bar pin locks that drill into the track can affect the rating if drilled into a structural area - we use only the manufacturer-approved hole locations on PGT WinGuard and CGI Sentinel sliders. Always ask before drilling on a Florida impact door.
Three things. First, rinse the track with fresh water every 2-3 months to flush salt. Second, lubricate the hook bolt mechanism annually with dry silicone spray (not WD-40 - it attracts grit). Third, replace plastic thumb-turns proactively at 8-10 years before they snap, especially on south or west-facing lanais. Our service visit includes lubrication.
Yes for any universal-fit thumb-lock, hook bolt cartridge, keeper, Charley Bar, Loc-Bar, foot bolt rebuild, or keyed patio lock - all stocked on the van. Brand-specific PGT WinGuard or CGI Sentinel parts that aren't universal we order in (2-4 business day lead time). About 80% of PSL slider jobs we finish same-day.
Slider lock repair is one of our most-called jobs across PSL - the canal-front homes in Sandpiper Bay and along the North Fork, the Bayshore patio sliders on older builds, the impact-glass PGT and CGI sliders standard on Tradition / Telaro / Veranda Bay, and the back lanais of St Lucie West and PGA Verano.
Last updated: 2026-05-18
