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Exterior wall waterproofing, stucco waterproofing and window perimeter sealing for homes, condos and commercial buildings in Broward, Palm Beach and Miami-Dade. Keep wind-driven rain out of your walls.
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CCC1333587 | CBC1263521
Trusted In Florida Since 2012
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Tremco, GAF & GE
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Emergency leak response
Wall and window leaks are some of the hardest to track down. Read what South Florida property owners say about how A-1 found the source and sealed it for good.
Exterior wall waterproofing matters more here than almost anywhere else. During summer storms and hurricanes, rain does not just fall. It blows sideways against the building with enough force to push water through hairline stucco cracks, porous block and aging caulk.
Most homes and condos in South Florida are concrete block with a stucco finish. Stucco is tough, but it cracks as buildings settle and heat up and cool down. Paint alone does not bridge those cracks for long, and once water gets behind the stucco it can stain interior walls, rot window framing and feed mold.
We seal the wall as a system: crack repair, sealant at every joint and opening, and an elastomeric wall coating that stretches over hairline cracks and sheds water. The result protects the building and gives it a fresh finish.
Wall leaks often show up far from where the water enters. Watch for these clues.
Damp spots or stains on interior walls that appear after wind-driven rain, not every rain.
Water on sills, swollen trim or peeling paint below a window usually points to failed perimeter sealant.
Map cracking and cracks running from window corners let water behind the finish.
Bubbles in exterior paint are a sign that moisture is trapped in the wall.
Persistent odors or mold near exterior walls can mean hidden moisture inside the wall.
We check the roof, gutters and flashing too, because water that looks like a wall leak sometimes starts above.
We combine these services based on what the wall needs.
A thick, flexible coating that bridges hairline cracks, sheds water and still lets the wall breathe. Available in many colors.
Cracks are opened, filled with flexible patching and textured to match before any coating is applied.
Old caulk is cut out and replaced with high-performance sealant around windows, doors and sliders.
Control joints, expansion joints and every wall penetration are sealed so water has no easy path in.
Most single-family homes take a few days. Condo and commercial walls are scheduled by elevation.
We map cracks, failed sealant and suspect openings, and water-test problem areas when needed.
Walls are pressure washed and loose paint and failed caulk are removed.
Cracks are repaired and new sealant is installed at windows, doors, joints and penetrations.
Primer and elastomeric coating go on at the thickness needed to bridge cracks and shed water.
We walk the building with you and document the finished work with photos.
No. Elastomeric coatings go on much thicker and stay flexible, so they can stretch over small cracks. Standard exterior paint is thinner and cracks along with the stucco.
Wind-driven rain pushes water into gaps that normal rain never reaches. Failed perimeter caulk, cracked stucco around the frame and worn weatherstripping are common causes.
Yes. If only one elevation takes the weather, we can seal that wall and its windows. We will tell you if other walls show the same wear.
Yes. We handle wall sealing and coatings for condos, HOAs and commercial buildings, often alongside concrete and balcony repairs.
Our waterproofing work includes a written workmanship warranty of 5 to 15 years depending on the system and scope.
We will find where the water is getting in and give you a written price to seal it. See all waterproofing services or claim 25% off a leak repair. Licensed CCC1333587 | CBC1263521.
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