BUILT ON CUSTOMER SERVICE, NOT JUST COATINGS.
Southern California’s trusted specialists in deck waterproofing, precast tread restoration, and architectural ironwork delivering honest evaluations and long-lasting structural protection.
A WATERPROOFING COMPANY THAT STARTS WITH DIAGNOSIS, NOT A QUOTE.
National Deck & Stair was built on honest, expert evaluation rather than quick sales pitch estimates. Sun-baked coatings crack, magnesite treads spall, and small leaks quietly damage structures for years before anyone notices. We started training our estimators as leak detectives first and installers second, because the wrong fix is often worse than no fix at all.
Today, our crews cover the full Southern California region — from the Central Coast near San Luis Obispo, through greater Los Angeles and Orange County, down to San Diego. We work on everything from a single homeowner’s balcony to multi-building HOA re-coating projects and full iron precast stairway installations.
Effective Solutions, Without Compromising Quality
Our goal on every job is the same: solve the actual decking or waterproofing problem, use materials and craftsmanship that hold up to Southern California conditions, and do it at a cost-effective price. No job is too big, and no job is too small.
Leak Detection Before Installation
Many contractors install a coating and hope it solves the problem. Our estimators are trained specifically in leak detection and problem solving, so the system we recommend actually addresses the source, not just the surface. Add in our in-house iron stairway, railing and fencing fabrication, and we can solve almost the entire exterior of a property with one crew.
WHAT MAKES NATIONAL DECK & STAIR DIFFERENT
DIAGNOSIS FIRST ESTIMATING
IN-HOUSE IRON FABRICATION
Custom precast stairways, railings, fencing and gates, built and installed by our own crews.
FULL SOCAL COVERAGE
From San Luis Obispo to San Diego, one contractor for multi-city HOA and commercial portfolios.
DESIGN FLEXIBILITY
A wide range of finishes, textures, patterns and custom colors for every waterproofing system.
RESIDENTIAL TO COMMERCIAL
Single-family homes, HOA common areas and commercial properties, all handled with the same standard.
POWERED BY CUSTOMER SERVICE
Clear communication, honest estimates, and a crew that cleans up after itself.
HAVE A DECK, BALCONY OR STAIRWAY PROBLEM?
Talk to an estimator who diagnosis the real issue before recommending a fix.