San Francisco Garage Epoxy
The under-house garage is the hardest working room in a San Francisco home. It is the gym, the shop, the laundry, the bike rack, and once in a while the office. Marbleous Creationz grinds the slab, deals with what is under it, and coats it so the room finally reads as finished.
The Cheapest Square Footage You Will Ever Reclaim Here
In most of the country a garage is where the car sits. In the Marina, the Sunset, the Richmond, and up the hill in Noe, it is a whole floor of the house that happens to have a roll-up door. Upstairs square footage in this city is priceless, so the garage absorbs everything that will not fit above it. The rowing machine. The laundry pair. Four bikes on a wall rack. A workbench wedged between the water heater and the stairs.
What holds that room back is almost never the size. It is the floor. Bare concrete in a San Francisco garage is usually old, patched, stained from whoever owned the place in 1974, and gritty enough that you track it up the stairs every time you carry a laundry basket. Coat it and the same room reads as an actual finished space. Light bounces instead of getting eaten. You can sweep it in two minutes. A yoga mat goes down without a second thought.
We have ground a lot of old slabs, and the honest pitch is simple. For what a coated garage floor costs you get back a room you already own and were not really using. That is a better trade than almost anything you can do to a house on this peninsula.
What We Do Before Any Coating Goes Down
Plenty of the garages we open up in this city were poured before the war. That slab has seen settlement, a few generations of patching, saw cuts that were added later, and sometimes a layer of gray porch paint somebody rolled on in the eighties. None of that is a dealbreaker. It just means the prep day is real work rather than a formality.
We grind mechanically with diamond tooling under vacuum, which is the only way to open the concrete and pull off old paint or a failed coating without filling the stairwell with dust. Grinding gives the resin a profile to bite into. A slab that is merely acid-washed or pressure-washed feels clean and bonds like glass, which is why so many hardware-store kits let go in a year or two.
Then cracks and joints. Old San Francisco slabs move, and we repair with a flexible structural filler rather than smearing something rigid across a joint that is going to keep working. Spalled edges near the door get rebuilt. Low spots that hold water get leveled so the finished floor drains toward the door instead of pooling by the washer.
Last comes the part clients rarely hear about from anyone else: moisture. A garage cut into a hillside sits against damp soil on two or three sides, and vapor pushes up through the slab whether or not you can see it. We test after grinding, either with taped plastic or a humidity probe. If the reading comes back high we put down a moisture-tolerant primer first. Coating a wet slab is the single most common reason a garage floor bubbles, and it is entirely avoidable if somebody bothers to check.
Spec the Floor for How You Actually Use It
Hot tire pickup is the headline problem in hot-climate garages. Here it barely comes up. Cars in San Francisco go in cool and come out cool, and half the garages we coat see a car once a week if that. The real wear comes from feet, bike tires, dropped dumbbells, rolling laundry carts, and a hand truck full of groceries dragged in from the curb.
That is why flake is our default for city garages. The chip layer adds texture, so a floor that has picked up fog damp off a wet car still gives you footing. It hides the shadow of old patches. It shrugs off the scuff a kickstand leaves. And the top coat cleans up with a mop, which matters when the same room holds the washer.
If you want the garage to look like a room rather than a garage, metallic is the other direction. It reads as depth and movement instead of speckle, and it suits a garage that has become a studio or a showpiece for one nice car. It is a smoother surface, so we talk about grip up front and add aggregate to the top coat when the floor will be walked on wet.
Flake Systems
Chip broadcast over the base coat, then sealed. Texture underfoot, forgiving of an old patched slab, and the easiest finish to keep clean in a garage that doubles as laundry and gym space.
See flake systems →Metallic Floors
Pigment moved by hand while the resin is still open, so no two floors match. For garages that have quietly become a studio, a workshop, or a home for something worth looking at.
See metallic floors →Finished Work
Photographs of completed floors, chip blends, and metallic pours. The fastest way to narrow down color before we bring physical samples out to your garage.
Browse the gallery →Three Days, and Where the Car Sleeps
A typical one-car or narrow two-car garage runs two to three working days. Day one is the loud day: grind, repair, moisture test. Day two the base coat and the chip or the metallic pour go down. Day three is the top coat, and on smaller floors that folds into day two.
The part people forget to plan is parking. The car has to be out for the whole job and for roughly a day after the top coat, and in this city that means street parking, a neighbor’s driveway, or a nearby garage. We give you the dates at booking so you can check street cleaning before you commit to a week.
Access matters too. Some blocks in the Sunset and the Richmond leave no room for a truck out front, and a few Noe garages sit at the bottom of a driveway you would not want to back a trailer down. Tell us what your street is like when we talk. We would rather work that out ahead of time than have a crew circling the block with a grinder in the back.
You will also need the floor genuinely empty. In a one-car garage there is nowhere to shuffle things to, so bins, bikes, the weight rack, and anything not bolted to the wall come out before day one.
What a Coated Floor Will and Will Not Do
It Ends the Concrete Dust
Sealed concrete stops shedding fines, so you stop tracking gray grit up the interior stairs every time you come through the garage with an armload.
It Brightens a Dark Room
Most under-house garages have one small window and a bare bulb. A light finish reflects instead of absorbing, and the room stops feeling like a basement.
Oil and Detergent Wipe Up
Nothing soaks in the way it does on bare concrete. Drips from the car, detergent from the washer, and whatever leaks out of a recycling bin come off the surface.
It Is Not Structural Repair
A coating is a finish, not a fix. If a slab is heaved or has an active structural crack, that gets addressed by the right trade before we bring resin into the room.
It Does Not Waterproof the Building
The floor seals the slab surface. If water is entering at the wall line or under the door, coating the floor will not stop it, and we will say so on the walkthrough.
It Will Show Its Life
Drag a steel jack stand across any coating and it leaves a mark. A well-prepped floor stays bonded for many years, but it is a working surface, not glass.
Garage Floor Questions We Get in the City
Can you coat a garage under a house with living space above it?
My slab is old and the garage always feels damp. Can it still be coated?
Where does my car go while you work?
The garage is narrow and full. What do I need to move?
Will a flake floor hold up to a home gym and bike storage?
Does the salt fog off the ocean hurt an epoxy garage floor?
How long does a garage floor coating actually last?
Garages We Coat Around the City
We work on garages across San Francisco, from the flat Marina blocks to the long avenues of the Sunset and the Richmond and up into Noe Valley and Bernal. Every one of them gets the same grind, the same crack and joint repair, and the same moisture check before a drop of resin goes down. Start on our San Francisco service area page, look through the finished floors in our gallery, then tell us about your garage or call (561) 572-8400 and we will come take a look.
Send Us Photos of the Slab.
Two or three phone photos and a rough width tell us most of what we need. We will come out, read the concrete, talk through flake or metallic, and give you a number with nothing hidden in it. Free look, no pressure.