We repair and replace worn sliding door thresholds for $129 to $299. Stops water intrusion, improves your seal, and keeps bugs out. Takes 45 to 90 minutes. Works on all brands including PGT, Andersen, and Pella. Call (772) 207-4146 for same-day service.
How to tell if your sliding door threshold is failing.
The threshold is the bottom piece of your sliding door frame. It's the part your door panel rides across. It also contains the weep system that drains water away from the track. After 10 to 15 years of foot traffic, weather exposure, and Florida's punishing rain, thresholds wear down. We see this constantly in homes across Port St. Lucie and Stuart, especially in communities built by GL Homes, Kolter, and Lennar in the mid-2000s.
Water Coming In During Rain
Water pools on the floor near the base of the door during storms. The threshold seal has failed.
Visible Wear on the Threshold
The surface is worn smooth, dented, or has cracks. Foot traffic and weather break down the material over time.
Bugs Getting In at the Bottom
Ants, roaches, and small lizards squeeze through gaps between the door panel and a worn threshold.
Drafts at Floor Level
You can feel warm air coming in at the base of the door. The threshold no longer creates a tight seal with the panel.
Why thresholds fail faster on the Treasure Coast
Florida gets an average of 54 inches of rain per year, and the Treasure Coast sits right in the heart of it. Heavy afternoon storms drive rain directly against your sliding door threshold. When the weep holes clog with dirt and debris, water backs up and sits against the seal. Over time, the aluminum oxidizes, the rubber gaskets crack, and water finds its way inside. We see this pattern in homes all over Jensen Beach and Hutchinson Island.
How we repair your sliding door threshold.
Every threshold job starts with a full inspection. We need to see if you need a repair, a partial replacement, or a complete threshold swap.
Inspect the Threshold
We check the threshold surface, drain holes, gaskets, and the subfloor underneath. We also inspect the door panel's bottom rail to make sure it matches the threshold profile.
Clear the Drain System
We clean out all weep holes and drain channels. Clogged drains cause most water intrusion problems and are often the first thing we fix.
Seal and Test
We apply exterior-grade sealant, reinstall the door panel, adjust the rollers if needed, and water-test the entire assembly to confirm a dry seal.
Threshold repair vs. full door replacement
A new sliding door costs $1,200 to $4,500 installed. A threshold replacement costs $129 to $299. If the rest of your door is in good shape, replacing just the threshold saves you a lot of money. We'll always tell you honestly which route makes sense for your situation. Check our guide to common sliding door problems for help deciding.
Threshold Repair Pricing
* Estimated labor costs. Parts and materials may be additional. We quote the exact price before starting.
Simple resurfacing, drain cleaning, and resealing starts at $129. Full threshold replacement on standard doors runs $199 to $249. Wider openings or impact-rated doors from PGT or CGI may run up to $299. Price includes parts, labor, and sealant. We confirm the exact cost before starting.
Proper threshold alignment stops water intrusion
A misaligned threshold creates gaps that let water, insects, and outside air into your home. We adjust the threshold height and angle to create a tight seal against the door panel, then apply fresh weatherstripping and sealant to keep everything out where it belongs.
Threshold parts for every major brand.
Serving the entire Treasure Coast.
Treasure Coast Sliding Door Repair does threshold repairs across Stuart, Port St. Lucie, Jensen Beach, Fort Pierce, Vero Beach, Palm City, Hutchinson Island, Hobe Sound, Port Salerno, and Indiantown. Martin County, St. Lucie County, and Indian River County. Same-day service most days.