Sliding Door Lock Repair in Hobe Sound

Why sliding door lock failure in Hobe Sound is different

Hobe Sound sits at the southern edge of Martin County where the Atlantic Ocean is less than a mile from most of the residential neighborhoods. That proximity drives a salt air concentration that is measurably higher than any other community in our service area. Pair that with a housing stock built predominantly between 1960 and 1985 - when door hardware was heavy cast zinc and aluminum alloy rather than modern stainless and polymer - and you get a community where sliding door locks reach end-of-life faster than anywhere else we work.

The seasonal home factor makes it worse. A large percentage of Hobe Sound homes are occupied only part of the year. A lock that sits unmaintained through a South Florida summer - high heat, maximum humidity, salt-laden air cycling through the door frame repeatedly - can seize completely in a single off-season. We regularly arrive at Hobe Sound homes where the lock cylinder pins have corroded solid, or where the hook bolt has literally fused in position from decades of salt attack on unprotected steel.

Salt air and 40-year-old hardware: a predictable combination

The lock cylinders in many Hobe Sound sliding doors are the original hardware from when the homes were built - 40 to 60 years of uninterrupted salt air exposure. When we extract these cassettes, the pin stacks are often corroded into a single fused mass. Penetrating oil treatment helps on mildly affected cylinders; full seizure means the cassette comes out and is replaced with a compatible modern equivalent.

The four corrosion failure patterns we see in Hobe Sound

Nearly all lock repair calls we handle in Hobe Sound fall into one of four categories. Each has a distinct presentation and a distinct fix. Identifying which one applies determines whether we can complete the repair from parts on the truck or need to source a period-appropriate replacement cassette.

• Completely seized cylinder. The key goes in but will not turn at all. The cylinder pin stacks have corroded solid from salt air penetration into the lock body. Penetrating oil treatment works on mildly affected cylinders, but full seizure in a 40-year-old Hobe Sound door typically means cylinder replacement. In some cases the corrosion has spread far enough into the cassette body that the entire cassette needs to come out rather than just the cylinder core.
• Hook bolt fused in position. We encounter sliding doors in seasonal Hobe Sound homes where the hook bolt has corroded itself into either the locked or unlocked position and simply will not move. When locked-in, the door cannot be opened from inside without forcing it. When unlocked-in, the door provides no security regardless of what position the handle is in. In both cases the lock body needs replacement rather than repair - the corrosion bond in the hook bolt channel cannot be reversed.
• Handle corrosion separation. The aluminum handle casting on period doors - Caradco, old Andersen Perma-Shield - can develop stress fractures from decades of salt air attack on the alloy. The handle looks intact from outside but the internal connection between the handle and the cam follower has broken down. You can move the handle freely through its full range and nothing happens inside the lock. This is a cassette replacement job, not a handle-only swap, because the cam follower is integrated into the cassette on most period systems.
• Strike plate alignment failure from frame settling. In many older Hobe Sound homes, the door frame has experienced decades of thermal cycling and ground movement. The hook bolt no longer aligns with the strike plate pocket - it either misses entirely or catches the edge and binds. The lock mechanism itself may be functional, but the door will not engage because the geometry has shifted. We address this by adjusting the strike plate position, which is a separate repair from the lock body but is so common in this housing stock that we check for it on every Hobe Sound call.

Period hardware knowledge: why it matters in Hobe Sound

Most sliding door repair technicians working today trained on doors built after 1990 - PGT, Andersen 200 Series, Truth Hardware, CGI, and similar modern systems. Those doors use standardized mortise pocket dimensions, widely available replacement cassettes, and hardware that is still in production or has clear modern equivalents.

Hobe Sound's 1960s-1980s housing stock uses different systems entirely. Caradco was a major manufacturer of aluminum sliding doors through the 1970s that exited the market; their lock cassettes are not interchangeable with modern parts and require supplier relationships specifically maintained for discontinued hardware. Old Andersen Perma-Shield patio doors used a proprietary lock system that differs from the current Andersen product line. Early Truth Hardware lock sets from that era use a cassette format that is no longer in standard production but for which compatible replacements exist through specialty channels if you know where to look.

We have invested specifically in this sourcing knowledge because the Hobe Sound and South Martin County market demands it. When a technician tells a Hobe Sound homeowner "we can't get parts for this door," it is usually not true - it means they have not built the right supplier relationships. We have.

How we approach every Hobe Sound lock repair

Stevan Ezias, our Lead Technician with 15+ years on the Treasure Coast, follows a consistent process on every Hobe Sound lock call. The order matters: skipping diagnosis to go straight to disassembly on period hardware is how technicians destroy cassettes that could have been repaired, or install incompatible replacements that fail within a year.

Should you repair or replace a lock on an older Hobe Sound door?

The honest answer depends on which component has failed. On period hardware, there is more nuance than on modern doors because some cassettes can be refreshed while others have reached the end of recoverable life regardless of what you do to them.

When the lock cannot be repaired, we can handle lock replacement in Hobe Sound as well. On period hardware this means sourcing a compatible cassette replacement - not simply ordering a standard modern lock set that will not fit the older mortise pocket dimensions.

Caradco, old Andersen, and early Truth Hardware - what we carry and why

Hobe Sound's residential build-out peaked in the 1960s and 1970s, which means a large share of the sliding doors we service here are from manufacturers that no longer exist in their original form or have fundamentally changed their product lines over the past 40 years. Three brands come up repeatedly:

Why period hardware requires specialized sourcing

Caradco sliding door lock cassettes use a mortise pocket format and hook bolt geometry that is not interchangeable with modern hardware. Old Andersen Perma-Shield lock sets from the 1970s and early 1980s predate the current Andersen product line by multiple generations. Early Truth Hardware components from that era exist in a compatibility tier that requires knowing which modern Truth cassette is a drop-in replacement versus which requires pocket modification. We have mapped these compatibility relationships specifically for the Hobe Sound and South Martin County market.

Caradco was a major aluminum sliding door manufacturer that was acquired and ultimately discontinued as a standalone product line. Homeowners with 1960s and 1970s Caradco doors face a challenge: most hardware suppliers have no record of the brand. We source compatible replacement cassettes that install in Caradco's original mortise pocket without requiring door modification.

Old Andersen Perma-Shield patio doors from the 1970s and early 1980s use a multi-point lock design that differs from Andersen's current E-Series and 400 Series products. The cassette format is not interchangeable, and ordering a standard "Andersen replacement lock" from a hardware supplier will give you a part that physically will not fit. We identify the specific Perma-Shield generation and source the correct compatible replacement.

Early Truth Hardware lock sets from before 1990 use a cassette body and hook bolt that predates the Truth Sievert product line that most technicians are familiar with today. For many of these systems, a compatible modern Truth cassette does exist - but the part number and compatibility have to be confirmed against the original mortise pocket dimensions before ordering. We carry common early Truth compatible replacements and can source the rest on short notice.

Recent job: 1969 Caradco cassette replacement - Heritage Ridge

A 1969 Caradco sliding door in Heritage Ridge with a lock cylinder seized solid from salt corrosion. The entire cassette was removed and replaced with a compatible modern replacement sourced through our period hardware supplier network. Hook bolt tested from both sides, strike plate adjusted for decades of frame movement. Total time on site: 65 minutes. The door had been inoperable for two years - the homeowner had been told it could not be repaired.

What Hobe Sound homeowners say about our lock repair service

Job reference: period lock cassette replacement, Heritage Ridge

A 1969 Caradco sliding door in Heritage Ridge had an original lock cylinder that was seized solid from salt corrosion. The entire cassette was removed - the cassette body itself had corroded at the hook bolt channel to the point where treating the cylinder alone would not have restored the hook bolt's function. A compatible modern replacement cassette was installed in the original mortise pocket. Hook bolt tested from both sides; strike plate adjusted for four decades of frame movement. The door had been non-functional for two years; the homeowner had been told by two other companies that the door needed to be replaced entirely.

Serving Hobe Sound from Port St. Lucie - about 30 minutes via US-1

A sliding door that will not lock is a security risk - and in Hobe Sound's seasonal community, a door that has been stuck open or stuck shut over an off-season is a situation we hear about often. We are based at 122 SW Port St Lucie Blvd in PSL, about 30 minutes south on US-1, and we group Hobe Sound calls with other Martin County stops throughout the week. Call (772) 207-4146 to confirm availability for your address.