Why Exterior Caulking Matters in Fort Lauderdale
Professional planning, suitable materials, and licensed coordination for South Florida properties.
Exterior Restoration • Fort Lauderdale, FL
Exterior Caulking & Sealing in Fort Lauderdale, FL
Failed caulking is one of the top sources of building leaks in South Florida. We replace exterior sealants in Fort Lauderdale with products engineered for the joints they're protecting.
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Exterior Sealant Replacement That Actually Stops Leaks
Exterior caulking and sealing in Fort Lauderdale is the most cost-effective moisture protection maintenance available — and the most consistently deferred until leaks are already happening inside. Every window frame, door frame, expansion joint, penetration, and transition on a Fort Lauderdale building's exterior is sealed against water entry with caulk or sealant. South Florida's UV radiation, thermal cycling, and hurricane wind-driven rain fail these sealants methodically over time — and when they fail, water enters. The window stain on the interior wall, the mold in the corner of the bedroom, and the concrete spall on the column below a failed joint all trace back to a sealant that was past its service life and not replaced. At Planet Construction FL, we replace exterior sealants before they fail — not after they've already let water in.
Failed Sealants Are Where Most Building Leaks Start
The Planet Construction Approach
Caulking and sealants have a finite lifespan, and in Florida's UV and humidity, that lifespan is shorter than most people realize. Once sealant cracks, dries out, or pulls away from the substrate, water has a direct path into the building — around windows, at control joints, where stucco meets trim, and at every penetration. Most building leak investigations end at a failed sealant joint that should have been replaced years earlier.
Sealant Replacement With the Right Product for Every Joint
Service Details
What You Should Know
Where to Caulk on Fort Lauderdale Buildings
Professional planning, suitable materials, and licensed coordination for South Florida properties.
Types of Exterior Sealants We Use
Professional planning, suitable materials, and licensed coordination for South Florida properties.
When to Replace Exterior Caulking
Professional planning, suitable materials, and licensed coordination for South Florida properties.
Common Questions
Frequently Asked Questions
Call us for project-specific information and a free consultation.
Call (754) 301-6747Can new caulk be applied over old caulk?
No — applying new caulk over old, failing caulk is not an effective or durable repair. Old sealant must be fully removed to allow the new sealant to bond directly to the substrate on both joint faces. New sealant bonded to old sealant instead of to the substrate fails at the old sealant-to-substrate interface — typically sooner than the original installation did. Complete removal before reapplication is non-negotiable for a lasting exterior sealant repair.
How much does exterior caulking replacement cost?
Exterior sealant replacement is priced by linear foot of joint treated. Window perimeter sealant replacement for a typical Fort Lauderdale home — 10–20 windows — typically ranges from $800 to $2,500 depending on the number of windows, sealant type, and the condition of the existing joint. Building-wide sealant programs for commercial buildings and condominiums are priced after a full joint inventory assessment. We provide a written estimate with linear foot quantities and unit rates for every sealant replacement project.
Does exterior caulking replacement require a permit?
Standard exterior caulking and sealant replacement — maintenance-level work that doesn't alter the building structure or envelope systems — typically doesn't require a building permit. Sealant work as part of a larger structural repair or waterproofing project with a permit scope is included in the overall project permit. We confirm permit requirements for each sealant replacement project at the assessment stage.
How long does exterior caulking last after replacement?
Fresh polyurethane sealant properly installed in Fort Lauderdale's exterior joints typically lasts 7–12 years before replacement is warranted. UV-stable silicone sealants in sun-exposed locations last longer — 12–20 years in some applications. South Florida's UV intensity is the primary factor shortening sealant service life — products with higher UV stability last longer in Fort Lauderdale's direct sun environment. We specify UV-appropriate products for each joint location rather than defaulting to a single product across all exterior sealant applications.
Get Your Exterior Caulking Inspection
Free sealant inspection. We'll identify failed joints, scope the replacement, and quote it honestly.