The Problem: Failing Perimeter Waterproofing at a Commercial Patio
The team at Omni Amelia Island Resort contacted LUX Foundation Solutions after noticing signs of deterioration along the perimeter patio slab. In a coastal environment like Fernandina Beach, FL, exterior waterproofing systems must withstand constant moisture and heavy use.
Upon inspection, our team confirmed system failure beneath the topping slab. The existing asphaltic membrane had deteriorated, and the drainage components were no longer performing as intended.
During selective demolition, we identified:
- Aging asphaltic membrane with loss of integrity.
- A compromised drainage layer reduces water evacuation.
- Deterioration at the critical slab-to-wall transition detailing.
- Increased risk of moisture migration into the concrete substrate.
Without proper commercial exterior waterproofing, continued exposure of concrete to water could lead to structural degradation, interior damage, and costly long-term repairs.
The Solution: Commercial Exterior Waterproofing System
To restore stability and provide long-term protection, our team implemented a fully integrated commercial exterior waterproofing system specifically designed for elevated concrete slabs in coastal Florida.
Step 1: Concrete Demolition & Removal
The deteriorated perimeter topping slab was removed to expose the existing waterproofing assembly. All compromised materials were extracted to reach clean structural concrete, ensuring proper adhesion of the new monolithic waterproofing membrane.
This ensured the new system would bond directly to a properly prepared substrate—not to failing materials.
Step 2: Concrete Substrate Preparation
The exposed slab edge and wall-to-slab transition were mechanically cleaned and prepped for membrane adhesion.
Preparation included:
- Removal of residual asphaltic materials
- Surface cleaning for proper bonding
- Inspection of joints and transitions
- Formation of reinforced vertical transition detailing
Proper prep is critical in commercial exterior waterproofing. Without it, even premium membranes fail prematurely.
Step 3: Rubberized Asphalt Installation (Henry 790-11)
A monolithic layer of hot-applied rubberized asphalt waterproofing membrane was installed along the perimeter slab and extended vertically at the wall transition.
This system:
✔ Creates a seamless, fully adhered barrier
✔ Eliminates lap seams
✔ Bridges minor concrete movement
✔ Forms a thick, durable waterproofing layer
✔ Meets commercial plaza waterproofing standards
The membrane was built up at the wall base to prevent lateral moisture intrusion — a common failure point in exterior slab systems.
Step 4: Protection Board Installation
After membrane installation, the Henry Protection Board was installed directly over the cured rubberized asphalt membrane.
This layer:
- Shields the hot-applied rubberized asphalt waterproofing membrane from mechanical damage.
- Distributes loads from above.
- Prevents punctures during topping slab restoration.
- Maintains long-term system integrity.
In commercial applications, protecting the membrane is just as important as installing it.
Step 5: Drainage Mat Installation
A dimpled drainage mat was then installed over the protection board to create a controlled water evacuation plane.
This drainage layer:
- Relieves hydrostatic pressure.
- Directs water toward designated drainage paths.
- Prevents moisture buildup above the membrane.
- Extends system lifespan.
Proper drainage is what separates temporary repairs from engineered waterproofing systems.
Step 6: Perimeter Topping Slab Restoration
With the waterproofing assembly complete, the perimeter slab was re-poured and finished to match the surrounding surface. The patio was returned to service with a fully rebuilt waterproofing system beneath it.
The Result: Long-Term Commercial Slab Protection in Fernandina Beach
The completed commercial exterior waterproofing system restored long-term protection to the Omni Amelia Island Resort patio slab in Fernandina Beach, FL. The slab is now waterproofed for coastal durability and commercial performance.
Project outcomes included:
✅ A continuous waterproof barrier at the slab edge.
✅ Reinforced slab-to-wall transitions.
✅ A protected membrane assembly.
✅ Controlled drainage above the membrane.
✅ Restored structural continuity at the perimeter.
This project demonstrates how commercial exterior waterproofing requires precision detailing, proper layer sequencing, and strict adherence to manufacturer specifications to ensure long-term performance.
At LUX Foundation Solutions, we treat every structure as if it were our own — delivering end-to-end honest foundation solutions built to last.
Schedule a Commercial Exterior Waterproofing Evaluation
If your commercial or residential property is experiencing slab deterioration, membrane failure, or perimeter water intrusion, early action prevents costly structural damage. LUX Foundation Solutions specializes in residential and commercial exterior waterproofing throughout Fernandina Beach and Northeast Florida.
Our team installs manufacturer-specified, protected membrane assemblies designed for long-term performance — not temporary fixes.
Contact us at 904-921-3589 to schedule a professional evaluation.
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