Frequently Asked Questions:

A waterproof deck protects the underlying structure from water damage, mold, and deterioration caused by rain, standing water, or leaks. Without proper waterproofing, decks—especially over living spaces—can suffer costly structural issues. Waterproofing also helps extend the life of your deck, keeping it safe, attractive, and functional year-round.

The best waterproofing method depends on the deck’s material, location, and exposure to the elements. At Thome Waterproofing, we use high-performance, professional-grade waterproofing membranes and coatings designed for durability and long-term protection. Whether it’s a balcony, rooftop, or poolside deck, we tailor the waterproofing system to match your specific needs.

When cantilevered above grade or over living space, the answer is yes—concrete and gunite pools absolutely require waterproofing. Concrete is porous by nature and can absorb water, leading to leaks, cracks, and structural damage over time. Applying a quality waterproofing system is essential to keep water contained, protect the pool shell, and prevent costly repairs down the line.

In most cases, home insurance does not cover preventative waterproofing services. However, it may cover water damage caused by sudden or accidental events (like storms or burst pipes). Preventative waterproofing—such as balcony sealing or deck coatings—is considered maintenance and typically isn’t covered. We recommend checking with your insurance provider for specific details.

Most decks should be professionally waterproofed and maintained every 3 to 5 years, but this can vary depending on the materials used, weather exposure, and foot traffic. Regular inspections and timely maintenance will help catch any early signs of wear. At Thome Waterproofing, we can assess your deck’s condition and recommend the ideal waterproofing schedule to keep it protected.

You should waterproof a new plywood deck as soon as the plywood has been installed and inspected by the city. A concrete deck should be waterproofed as soon as it is fully cured and ready for treatment, which is generally about 28 days. Applying waterproofing early helps prevent water infiltration from day one and ensures your deck remains in top condition. We’ll evaluate the timing and conditions to apply the system for maximum durability and performance.

A professionally applied roof deck waterproofing system can last the life of the home. However, it will require maintenance every 2 to 5 years depending on the materials used, traffic, and environmental exposure. We recommend inspections every 2 years to catch any potential issues early, to both prevent water intrusion and ensure the longest possible lifespan. Thome Waterproofing uses high-quality products engineered for long-term protection to help your roof withstand the elements for years to come.