Both block & brick construction have weak points at the mortar joints. As the mortar ages, it becomes brittle and cracks, leaving an entry point for water.
When it comes to commercial properties, water intrusion isn’t just a minor inconvenience—it can lead to serious structural damage, mold growth, and costly repairs. With Florida’s intense rainy season fast approaching, now is the time to ensure your building’s exterior walls are properly waterproofed.
Waterproofing is more than just a preventative measure; it’s an essential part of maintaining a safe, durable, and energy-efficient commercial space. In this post, we’ll discuss how water enters a building through exterior walls, why waterproofing is so important in Florida, and how to spot early signs of trouble.
How Water Enters a Building Through Exterior Walls
Even a well-constructed commercial building can develop vulnerabilities over time. Here are the most common ways water seeps through exterior walls:
1. Cracks and Gaps
Over time, materials expand and contract due to temperature changes, causing cracks to form in stucco, brick, concrete, or masonry. Even small cracks can allow moisture to seep in, leading to interior wall damage and mold growth.
2. Failed Sealants and Caulking
Windows, doors, and expansion joints rely on sealants and caulking to keep water out. As these materials degrade due to UV exposure and weathering, they lose their effectiveness, allowing water to penetrate behind the facade.
3. Porous Building Materials
Certain exterior materials, such as unsealed brick or concrete, are naturally porous and can absorb water like a sponge. Without proper coatings or sealers, water can work its way through the walls over time.
4. Faulty or Missing Flashing
Flashing directs water away from critical areas like windows, doors, and roof intersections. If flashing is improperly installed, damaged, or missing, water can infiltrate behind the wall assembly and cause hidden damage.
5. Clogged or Poorly Designed Drainage Systems
If a building’s exterior drainage system (including gutters, downspouts, and weep holes) isn’t functioning correctly, water can pool around the foundation or trickle down exterior walls, increasing the risk of leaks.
Why Exterior Waterproofing Is Critical—Especially in Florida

Florida’s climate presents unique challenges when it comes to keeping commercial buildings dry. The combination of high humidity, frequent heavy rains, and the occasional hurricane can wreak havoc on unprotected structures. Here’s why exterior wall waterproofing is a necessity:
- Prevents Structural Damage: Prolonged exposure to moisture weakens concrete, corrodes metal reinforcements, and deteriorates building facades.
- Reduces Mold and Mildew Risks: Florida’s warm, humid environment is the perfect breeding ground for mold, which can lead to health issues and costly remediation.
- Protects Interior Finishes and Equipment: Water infiltration can damage drywall, flooring, and even electrical systems—resulting in expensive repairs and business disruptions.
- Increases Energy Efficiency: Water-damaged insulation loses its effectiveness, making it harder to regulate indoor temperatures and driving up energy costs.
Exterior Wall Waterproofing Checklist: Signs of Trouble
Routine inspections can help you identify potential waterproofing issues before they turn into costly problems. Here are some red flags to look out for:
✅ Visible Cracks – Check for cracks in stucco, masonry, or concrete that could allow water intrusion.
✅ Peeling or Bubbling Paint – This could indicate trapped moisture within the wall system.
✅ Water Stains or Efflorescence – White, chalky residue on masonry surfaces is a sign of water seeping through.
✅ Mold or Musty Odors Indoors – Persistent moisture problems can lead to mold growth inside the building.
✅ Damaged or Missing Sealants – Inspect caulking around windows, doors, and expansion joints for gaps or deterioration.
✅ Soft or Warped Drywall – If interior walls feel soft or show signs of warping, moisture may be present inside.
✅ Standing Water Near the Foundation – Poor drainage can cause water to pool, increasing the risk of leaks.
Protect Your Property Before the Storms Arrive
The Florida rainy season is just around the corner, making now the perfect time to assess and reinforce your building’s waterproofing defenses. Addressing small issues today can prevent major repairs down the road.
At Remediation Specialists, we offer expert exterior waterproofing solutions tailored to Florida’s demanding climate. Whether you need crack repairs, sealant applications, or a full waterproofing system, we’ve got you covered.
Don’t wait for the next heavy storm to find out your building isn’t protected. Contact us today for a professional assessment and keep your property dry and secure.
🔹 Call us at 407-740-6653
🔹 Visit our website: remspecusa.com
By taking a proactive approach to exterior wall waterproofing, you can protect your investment, maintain a safe environment, and avoid costly repairs down the line. Stay ahead of the rain—because in Florida, it’s not a matter of if the storms will come, but when. 🌧️