My sister bought a 2004 two-story in Cedar Park in summer 2024, and the first thing she wanted done was the garage floor: 20 years of oil rings and a tire-track stain that looked permanent. She asked me to inspect the house; I did, and then asked if I could set a camera for the coating job. I have shot time-lapses of maybe 30 installations by now, mostly for warranty files, and a garage floor in Austin in July tests everything a camera sees that someone standing in the doorway does not. The installers started at 6:40 a.m. to beat the heat. The camera had been running since 6:00.
Where the camera goes and why it never moves
A time-lapse of a floor coating has one job: show the whole slab, in the same frame, from prep to cure. I mount a mirrorless with a 16mm lens on a clamp at the top corner of the garage door track, about 9 feet up, angled down 35 degrees so the frame covers all 440 square feet with the door threshold along the bottom edge. The camera stays there for the whole job and for 24 hours of cure afterward — that means a wall outlet and a dummy battery, not one that dies at hour four.
For a six-hour coating job I shoot one frame every 10 seconds: roughly 2,100 frames and a 70-second clip at 30 fps. For the cure period I drop to one frame every two minutes. Exposure is locked manually or the clip flickers every time the garage door opens and Texas sun floods the slab. On this job: 1/125 s, f/5.6, ISO 400, white balance fixed at 5,000 K. A second camera on the water heater shot continuous 4K from floor level. The overhead shows coverage; the low camera shows texture.
What the footage caught during prep
The eye watches the installer. The camera watches the floor. Sped up 300 times, the grinding pass showed the slab changing color unevenly — a lighter band about 3 feet wide along the back wall where the concrete had been sealed at some point and was resisting the profile. The installers made a second pass, and the time-lapse shows exactly when and where. That moment would otherwise exist only as a sentence on an invoice.
Then the moisture check: a piece of plastic sheeting taped to the slab, and in the sped-up footage you can watch the concrete under it darken over 40 minutes as vapor rises from a slab that had sat on Central Texas clay through a wet spring. A person glancing at the plastic sees clear plastic. The camera sees the change.
What it caught during the coat
The base coat went down at 7:50 a.m. with the slab at 78 degrees Fahrenheit. The time-lapse showed the roller pattern as parallel lanes about 18 inches wide, and two spots near the center where the lanes met with a visible ridge. The installers back-rolled them within a minute. On the finished floor you cannot find those spots; in the footage you can point to them.
The flake broadcast is where the low camera earned its place. In real time, flake falls in a blur. Played frame by frame, you see the distribution — and in this case you see it thin out along the left wall where the throw was shorter. They caught it on the walk-back and broadcast more. By 11:00 a.m. the topcoat was going down fast. The time-lapse shows small bubbles appearing near the door for 20 minutes, then breaking and leveling. That is air coming out of warming concrete — the most common thing Austin homeowners panic about at noon. Footage of the bubbles self-resolving is the most reassuring document I have handed a homeowner.
What the file is for afterward
I hand over three things: the 70-second overhead clip with timestamps burned in, a 4-minute cut of the low-angle footage covering checks and corrections, and the raw frames on a drive. File names carry the address, the date, and the product names from the invoice. A warranty file for a floor coating is only useful if it shows the prep and the conditions on the day.
The work was done by an Austin garage epoxy installer who had no objection to being recorded and by day’s end was asking for a copy of the time-lapse. A two-car floor with flake and a polyaspartic topcoat in the Austin area runs roughly $2,800 to $5,500 depending on grinding and crack repair needed.
Frequently asked questions
What interval should I use for a garage floor coating time-lapse? One frame every 10 seconds during the six or so hours of active work gives about a 70-second clip at 30 fps. Drop to one frame every two minutes during cure, and lock exposure manually so the garage door opening does not cause flicker.
Can a time-lapse show problems with a floor coating? Yes. Overhead footage shows uneven grinding, roller ridges and thin flake coverage as they happen, and it shows the corrections. It also documents slab temperature and moisture conditions on the day, which is what a warranty dispute usually turns on.
Where should the camera go for a garage floor time-lapse? Clamp it high in a corner near the garage door, around 9 feet up and angled about 35 degrees down, so the entire slab fits in one frame. Power it from a wall outlet with a dummy battery so it runs through the cure period without interruption.