Deck Waterproofing
Durable waterproof coatings that protect walking decks, roof decks, and balconies from water intrusion.
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Stop balcony leaks, dry rot, and inspection-related damage with a durable, code-compliant waterproofing system, backed by our 8-year warranty.
Exterior balconies take the full force of sun, rain, and foot traffic, and they sit directly over living space. When the waterproof membrane fails, water reaches the framing and leads to dry rot, rusted connectors, and the structural damage California inspectors look for.
Capital Deck & Stair installs code-compliant balcony waterproofing that seals the walking surface, protects the structure, and stands up to daily use, most projects backed by our 8-year warranty.
Notice any of these? Call 818-697-6334 for a free on-site evaluation.
We assess the substrate, drainage, and existing coating to pinpoint the real source of water intrusion, not just the symptom.
We remove failed coatings, repair cracks and dry rot, and rebuild a sound, stable substrate before anything else.
We install the right coating system for your surface, traffic, and exposure, applied to code by experienced crews.
We review the finished work with you and back most projects with our industry-leading 8-year warranty.
Decades of waterproofing across LA & OC.
Guaranteed workmanship that lasts.
Fully licensed & insured.
Fast, local, no-obligation quotes.
Durable waterproof coatings that protect walking decks, roof decks, and balconies from water intrusion.
Learn more →Slip-resistant, weatherproof coatings for exterior stairs and landings that last for years. We also design and fabricate custom iron based precast staircases for minimal maintenance.
Learn more →Expert magnesite repair and replacement to restore worn, cracked, and failing deck substrates.
Learn more →Waterproofing for apartments, HOAs, and commercial properties, built to pass inspection and last.
Learn more →We work with Building & Safety departments in every city we serve, handling permits and inspections from submittal to final sign-off.
Learn more →Yes. We waterproof and repair exterior elevated elements to current code and can work from your inspection findings to bring your balconies into compliance.
A professionally installed waterproofing system typically lasts many years. Capital Deck & Stair backs most projects with an 8-year warranty on workmanship, and proper maintenance can extend the life well beyond that.
Cost depends on the surface size, condition, and the coating system required. We provide a clear, itemized quote after a free on-site inspection, with no obligation and no pressure.
Most residential decks, balconies, and stairs take about a week from start to finish, depending on prep, repairs, and weather. We give you a firm timeline before work begins.
Yes. We handle residential, HOA, and commercial waterproofing across Los Angeles and Orange County, and we are licensed (#1005325) and insured for projects of every size.
Protect your property today, talk to a local waterproofing expert.