HOA Deck Repair Using Westcoat Waterproofing Systems
by Michelle
- January 5th, 2026 /
- Project Profile,Waterproofing
A Large-Scale HOA Waterproofing & Repair Project Powered by Westcoat Systems
The Crest at Del Mar is a large residential community in Del Mar, California, consisting of 171 elevated exterior decks. Over the years, many of these decks began showing signs of deterioration — raising structural concerns and posing safety risks for residents. To address this at scale, the property management team needed a contractor experienced in managing high-volume deck repairs while maintaining quality, consistency, and minimal disruption to homeowners.
After conducting civil code 5551 inspections, the Forensic Architect recommended California Construction Concepts, a Westcoat Qualified Contractor Applicator (QCA) known for successfully self-performing complex structural and waterproofing scopes. Their hands-on experience with Westcoat systems made them the ideal partner for this demanding HOA project.
Comprehensive Assessment Uncovers Structural Issues
California Construction Concepts completed a full evaluation of all 171 elevated decks, including destructive testing. Findings revealed that improper flashing by a previous contractor caused structural damage on 71 decks, requiring significant repairs.
Breakdown of Deck Conditions
- 100 decks required topical waterproofing to extend life until future flashing replacement
- 100 decks also received general maintenance and improved ventilation
- 71 decks required structural repair, new flashing, waterproofing, stucco, and paint
This phased and prioritized approach provided the HOA with 5–7 years of additional planning and budgeting time, while ensuring immediate safety and protection where needed most.
Westcoat Systems Selected for Long-Term Performance
To deliver durable, code-compliant results, the QCA team used a combination of Westcoat systems tailored to the property’s foot traffic and varying deck conditions:
- ALX™ Waterproofing System for high-performance protection and durability
- MACoat™ System as an additional protective layer for enhanced longevity
- WP-95 Waterproofing Membrane to guard against moisture intrusion and salt-air exposure
Each deck was carefully prepared, cleaned, and installed according to Westcoat specifications, ensuring uniform quality throughout the community.
8 Months of Skilled QCA Work, Start to Finish
Using their full in-house crew, California Construction Concepts completed the 8-month project efficiently while minimizing disruption to residents. Their QCA status meant they brought a deep understanding of Westcoat products, installation standards, and best practices — ensuring the HOA received a long-lasting, high-quality result.
Project Outcomes
- Improved safety for residents across 171 decks
- Extended structural lifespan of the community’s elevated surfaces
- A consistent, durable finish throughout the property
- Greater peace of mind for property management and homeowners
- Verified materials and installation backed by Westcoat system performance
A Trusted Partnership for HOA and Multifamily Properties
California Construction Concepts’ ability to self-perform structural framing, waterproofing, stucco, and paint — combined with the proven durability of Westcoat systems — made this large-scale restoration a success.
“We are proud to partner with industry leaders like Westcoat to deliver reliable, high-performance waterproofing solutions for commercial, multifamily, and HOA communities.” – Elizabeth, project administrator at CCC.
