
Deck Waterproofing in Hermosa Beach
Long-lasting waterproof coating systems that keep walking decks, roof decks, and balconies protected from water intrusion.
Deck Waterproofing detailsOne of the densest beach cities in the county, with salt air on every deck and very little room to work.
Takes about 30 seconds. No obligation, no pressure.
Hermosa Beach fits 10,038 housing units into a little over a square mile, more than 7,000 units per square mile, and just over 54 percent of the occupied ones are rented. That density is the job here. Buildings sit close, decks stack above one another, and access for a rebuild has to be worked out before anyone arrives with material.
Sitting directly on the Pacific with westerly sea breezes means salt is on these surfaces permanently. It is patient, unglamorous damage: fasteners, flashing and coating edges giving up years earlier than the same details would a few miles inland.
Average temperatures around 70 degrees in summer and 55 in winter mean surfaces here never get the hard bake that drives an inland deck dry. A wet lap stays wet longer, which is exactly the condition rot wants.
Roof decks are common on this stock, and a roof deck is a roof first. The waterproofing under the walking surface is protecting living space, not just a view, so the terminations at parapets, thresholds and railing posts carry the whole job.
We rebuild the structure where it has gone, fabricate the guardrails and stair sections in our own shop, and detail the metal for a marine environment rather than treating a beach deck like any other deck.

Long-lasting waterproof coating systems that keep walking decks, roof decks, and balconies protected from water intrusion.
Deck Waterproofing details
Code-compliant balcony waterproofing that prevents leaks, dry rot, and structural damage before they take hold.
Balcony Waterproofing details
Slip-resistant, weatherproof coatings for exterior stairs and landings built to last for years, plus custom iron based precast staircases we design and fabricate in-house for minimal upkeep.
Stair Waterproofing details
Skilled magnesite repair and replacement that brings worn, cracked, and failing deck substrates back to a solid, stable surface.
Magnesite Decking details
Waterproofing solutions for apartment buildings, HOAs, and commercial properties, designed to pass inspection and hold up over time.
Commercial Waterproofing details
Our team works directly with Building & Safety departments across every city we serve, managing permits and inspections from initial submittal through final sign-off.
Permit Experts detailsThe Hermosa Beach Building and Safety Division regulates construction and occupancy across residential, commercial and industrial buildings to ensure life, fire and health safety. Worth knowing here: a project vests to the building code edition in effect when a complete building permit application and plan submittal are received, and planning approvals do not establish that vesting. A complete package matters more than an early partial one.
Balcony Works is built by the same team behind Capital Deck & Stair Waterproofing, decades of hands-on work across thousands of LA and OC properties.
Most projects are backed by an 8-year warranty on workmanship.
Fully licensed (1045438) and insured for residential and commercial work in Hermosa Beach.
A local crew looks at the actual deck, and the quote comes back itemized.
No. Hermosa Beach vests a project to the building code edition in effect when a complete building permit application and plan submittal are received. Planning approvals do not establish that date, which is why we file a complete set rather than an early partial one.
Because it never stops. Rain is seasonal, salt is not. It works on fasteners, flashing and coating edges year round, and combined with mild coastal temperatures that keep surfaces damp, it takes years off the details.
Normal for a city with over 7,000 housing units per square mile. We work out the material drop, the debris route and the walkway sequencing before day one, because there is no room to improvise once a crew is on site.
Protect the deck before the next storm. Tell us what you are seeing and we will come look, no obligation.