Blog
Sliding door knowledge from the people who fix them
Practical, no-nonsense guidance on sliding glass doors — rollers, tracks, locks, glass, and the realities of Florida's coast — written by Delta founders Mike and Danny Hannigan.
Rollers & Tracks
Why Is My Sliding Glass Door So Hard to Open?
A sliding glass door should not feel like gym equipment. When a patio door suddenly needs two hands, the problem is usually mechanical rather than a s…
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Rollers or Track? How We Tell What Is Actually Failing
Customers often tell us, “I think it needs rollers,” or “the track is bad.” Sometimes they are exactly right. Sometimes both parts are involved.
Read →Signs Your Sliding Door Rollers Need Replacement
Rollers rarely fail all at once. Most give warnings for weeks or months.
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Why We Replace Sliding Door Rollers in Pairs
A sliding panel is supported at both ends. That simple fact explains why we usually replace bottom rollers as a pair.
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Why New Rollers Can Fail on a Damaged Track
New rollers are not magic. If the surface under them is damaged, they can begin their life in the same conditions that destroyed the old hardware.
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Should You Use WD-40 on a Sliding Glass Door Track?
We understand why people reach for WD-40. The door is hard to move, there is a can in the garage, and lubricant feels like the obvious answer.
Read →What Happens During Professional Roller Replacement?
Professional roller replacement starts before the old roller comes out.
Read →Track Repair vs. Track Replacement
Not every damaged track needs the same solution.
Read →What Is a Sliding Door Track Cap?
A track cap is a formed piece installed over an existing sliding-door running surface to create a new path for the roller.
Read →Why Does My Sliding Door Keep Coming Off the Track?
A sliding door that repeatedly comes off its track is telling you something is wrong with support, alignment or the running surface.
Read →Why Is My Sliding Door Scraping the Bottom Track?
Scraping usually means the panel is sitting lower than it should or contacting something that was never intended to carry its weight.
Read →Why Does My Sliding Door Grind or Make a Repeating Bump?
Sound is useful diagnostic information.
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Pocket Door Rollers: Why the Door Gets Stuck Inside the Wall
Pocket doors hide their hardware, which is convenient until something fails.
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Why a Sliding Door Frame Goes Out of Square
A sliding panel depends on a reasonably square, stable opening. When the frame shifts, the symptoms can look like bad rollers or a bad lock.
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Can a Sliding Door Be Realigned Without Replacing It?
Often, yes. But “alignment” is a result, not a single adjustment screw.
Read →Parts & Older Doors
What Happens When a Sliding Door Roller Is Discontinued?
One of the more interesting parts of this trade starts after the door is already on the work table: the roller comes out, there is no readable part nu…
Read →How We Identify an Unknown Sliding Door Roller
A photo of the wheel is helpful, but it is rarely enough to identify a sliding-door roller with confidence.
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Can a 30-Year-Old Sliding Glass Door Still Be Repaired?
Yes, many older sliding doors can still be repaired. Age alone is not a diagnosis.
Read →Repair or Replace a Sliding Glass Door?
Replacing an entire sliding door is a major project. Sometimes it is the right project. Sometimes a failed $component is making a serviceable door fee…
Read →Florida & Coastal
Stainless Steel Rollers in Florida: When They Make Sense
Florida is hard on moving metal parts. Humidity, wind-driven rain and salt in coastal air can accelerate corrosion, especially when a patio door is cl…
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How Salt Air Damages Sliding Doors Near the Coast
A few miles can make a difference in how sliding-door hardware ages. Homes near the Atlantic are exposed to salt carried by air and moisture, and that…
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Impact Sliding Doors: Why Heavy Panels Need the Right Rollers
Impact-rated sliding doors can be dramatically heavier than older non-impact patio doors. That extra weight changes what the roller system has to do e…
Read →How Long Do Sliding Door Rollers Last in Florida?
There is no honest universal number. Roller life depends on panel weight, hardware quality, frequency of use, track condition, installation, adjustmen…
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Why Sliding Doors Get Harder to Open in Florida Humidity
Humidity gets blamed for almost every sticky door in Florida, but a sliding glass door does not normally become extremely heavy just because the air i…
Read →Glass & Locks
Why Won't My Sliding Door Lock Anymore?
A sliding door that will not lock does not always need a new lock.
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Sliding Door Mortise Locks: Common Problems
Many patio doors use a mortise lock hidden inside the vertical edge of the moving panel. The handle operates that internal mechanism, which engages a …
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Can You Replace Sliding Door Glass Without Replacing the Door?
In many cases, yes. A broken or failed glass unit does not automatically require replacement of the complete sliding-door system.
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Why Is There Fog Between My Sliding Door Glass?
Fog or moisture that appears between panes is different from condensation you can wipe from the room-side surface.
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Tempered Glass vs. Impact Glass in Florida Sliding Doors
“Safety glass” and “impact glass” are not interchangeable terms.
Read →Why Is Water Coming Through My Sliding Glass Door?
Water near a sliding door can have several causes, and not all of them are a failed weather seal.
Read →Local Guides
Common Sliding Door Problems We See in Jacksonville
In Jacksonville, we work on everything from older aluminum patio doors to large impact-rated systems. The problems vary, but a few patterns repeat.
Read →Sliding Door Problems in Jacksonville Beach Homes
Sliding doors in Jacksonville Beach live in a demanding environment. Salt, moisture and wind-blown sand reach components that are easy to ignore until…
Read →Sliding Door Repair in Ponte Vedra: What Coastal Homes Need
Homes in Ponte Vedra Beach often combine two conditions that matter to sliding-door hardware: coastal exposure and large glass panels.
Read →Sliding Door Problems We See in St. Augustine
St. Augustine has a mix of older homes, newer coastal construction and doors that have already seen decades of Florida weather.
Read →Sliding Door Repair in Orange Park: Rollers, Tracks and Alignment
In Orange Park, many service calls begin with the same sentence: “The door still moves, but it keeps getting harder.”
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