Waterproofing and building envelope contractor in Los Angeles, CA. KCJ Contracting Inc. Serving Los Angeles and Ventura County, including the San Fernando and Santa Clarita Valleys.
Los Angeles, CA · Since 1988
Protecting allsix sides ofa structure
Building envelope waterproofing across Los Angeles and Ventura County, on new
construction and on restoration. Below grade, decks, above grade waterproofing and
roofing, scoped as one continuous system.
Licensed, bonded & insuredCSLB #546580Residential · Commercial · Multi family
1988Waterproofing Los Angeles since
6Sides of the structure we protect
6Envelope systems we install
546580CSLB licence, bonded and insured
What we install
Below grade to roof line
We work on new construction alongside the builder and on restoration, across
residential, commercial and multi family properties.
01
Below Grade Waterproofing
Membranes and drainage on foundation walls, footings, elevator pits and planters, installed before backfill so groundwater never reaches the basement or the parking levels.
Waterproof deck systems for balconies, walkways and podium decks, applied over plywood or concrete, and traffic bearing membranes for parking structures, ramps and plaza decks that take tire wear and turning loads without splitting at the joints.
The parts of the envelope you can see: parapets, planters and balcony to wall transitions, plus the sheet and fluid applied air and weather barriers that run behind the cladding.
Joint systems that let a building move without tearing the waterproofing, from sealant joints in a wall to engineered joint covers across a garage deck.
Custom sheet metal is an essential part of reinforcing transitions in planters,
decks and similar details.
One continuous skin
Water finds the one detail nobody thought about.
A building keeps water out the way a jacket does. Break it anywhere and the water
travels until it finds somewhere to show up, which is rarely where it got in. So we
scope a roof, a balcony deck, a below grade wall and the air barrier behind the
cladding as parts of the same system, not as four separate trades.
KCJ Contracting has been protecting the building envelope in Los Angeles since 1988. We work on residential, commercial and multi family properties, from below grade and above grade waterproofing to deck coatings and roofing.
Water finds the one detail nobody thought about. So we treat the envelope as one continuous system and cover all six sides of a structure, rather than chasing a leak and leaving the next one to somebody else.
Licensed, bonded and insured. CSLB License #546580.
The envelope is the roof, the four walls and everything below grade. That is the six
sides. It is why a below grade membrane, a balcony deck coating and an air barrier all
belong to the same job on our sites.
We work on new construction alongside the builder and on existing buildings where
something has already failed. Both start with the same walk around the building.
Fig. 01Building envelopeSection
Roof, four walls and everything below grade. Break the line anywhere and the water is inside the envelope.
Built A custom home closed in on all six sides, weather barrier lapped and flashed before any cladding goes on.
On site
Recent work
Progress photographs from custom residential and multi family projects across
Los Angeles. Finished job photography is being added as projects close out.
Below grade waterproofing Flood test before backfill
Below grade waterproofing Membrane turned down to the footing
Above grade waterproofing Envelope work in progress
Above grade waterproofing Weather barrier, full elevation
Deck/traffic coating Finished deck coating at a glass wall
Above grade waterproofing Air barrier across an exterior wall
How a job runs
Four steps, in order
The same sequence on a two day balcony and on a full below grade level.
We strive to think ahead and plan for potentials to reduce the need for change orders.
Precon meeting
Precon meetings, the plans sent over or an electronic RFP, then we walk the project and come back with scope and prices.
Scope and price it
You get the system we intend to install, how the corners, penetrations and terminations are detailed, and what it costs.
Prep, then install
Substrate repair and drying come before any membrane. Most failures we are called to fix were installed correctly onto a surface that was not ready.
Inspect before it is covered
Below grade work gets signed off before backfill and, where it applies, flood tested. Once the soil or the topping slab goes on, nobody sees that membrane again.
On the map
Where we work
Ventura County, Santa Clarita Valley, San Fernando Valley, and across Los Angeles itself.
Ventura CountySanta Clarita ValleySan Fernando ValleySimi ValleyThousand OaksCalabasasHidden HillsWest HollywoodHollywoodBeverly HillsBel AirHolmby HillsMalibuPacific PalisadesSanta MonicaMarina Del ReyManhattan BeachLos AngelesPasadenaGlendaleBurbankSylmarVentura CountySanta Clarita ValleySan Fernando ValleySimi ValleyThousand OaksCalabasasHidden HillsWest HollywoodHollywoodBeverly HillsBel AirHolmby HillsMalibuPacific PalisadesSanta MonicaMarina Del ReyManhattan BeachLos AngelesPasadenaGlendaleBurbankSylmar
Straight answers
Before you call
What does the building envelope actually cover?
The envelope is every surface between the inside of a building and the weather: the roof, the four walls and everything below grade. That is the six sides. It is why a below grade membrane, a balcony deck coating and an air barrier all belong to the same job on our sites.
Do you work on homes as well as commercial buildings?
Yes. We work on residential properties and on commercial and multi family buildings, from a single balcony deck to a full parking structure.
Do you repair the concrete before you coat it?
Yes. Spalled, cracked or delaminated concrete has to be cut out and made sound before a membrane goes over it, or the new coating fails at the same spot. Concrete restoration is part of the same scope on our jobs, not a second trade you have to hire.
What kind/size of projects do you work on?
Everything from a small residential repair, through full protection on a high end custom home, all the way up to new construction and repairs on mixed use, multi family and commercial buildings.
What warranties do you offer?
Typically a 5 year material warranty is standard, all the way up to a 20 to 30 year NDL warranty on certain projects.
Which areas do you cover?
Los Angeles and Ventura County, including the San Fernando Valley, the Santa Clarita Valley, the Westside and the beach cities. If you are not sure whether your address is in range, call and ask.
Get in touch
Send us the details.
Tell us the property, the address, and what you are seeing. If you would rather
talk it through, the phone is quicker.
