How Does Stone Coating Get Installed Over Existing Concrete? A Day-by-Day Walkthrough for Okanagan Homeowners
The thing that surprises most homeowners about a Sierra Stone install is not the finish. It's the calendar.
A traditional pool deck or patio replacement burns somewhere between four and six weeks — demolition, removal, forming, pouring, curing, and a final stamp or stain pass once the slab is workable. The yard is unusable through the entire window. The neighbours are loud-equipment-tired by week two. And the cost rolls past $15,000 before the new surface has reached design strength.
A Sierra Stone resurface of the same slab takes three days from arrival to finished surface, with the existing concrete staying in place. There's no demolition, no haul-away, no week-long re-pour. The yard is yours again before the weekend. The completed surface is ready to walk on within 24 to 48 hours of completion.
Here's what those three days actually look like.
Why three days works (and why replacement takes weeks)
The math behind the timing is simple. A traditional concrete pour has to form the slab, pour the concrete, and wait for it to cure. The pour itself is a few hours. The form and cure are the long parts — they exist because fresh concrete takes 28 days to reach design strength and a full week before it can be walked on at all.
Sierra Stone bypasses all of that. The existing slab is already cured. The system uses the slab as the substrate and bonds a new wear surface directly to it. No forming, no pouring, no waiting for concrete to cure. The materials Sierra Stone applies — industrial-grade epoxy and a UV-stable urethane topcoat — are engineered for fast cure times measured in hours, not weeks.
Three days is the work itself. There is no separate curing window after the work is done.
Day one: prep
Surface prep is the most important day of the whole project and the one homeowners least appreciate. A stone coating system is only as good as the bond between the new material and the existing slab. Get the prep wrong and the best topcoat in the world will eventually delaminate. Get the prep right and the same system will outlast the homeowners.
The first day on a Sierra Stone job runs like this:
- Surface inspection and structural assessment. The team walks the slab and confirms it's a candidate for resurfacing. Wide cracks, settlement, heave, or drainage failure get flagged at this stage and the homeowner gets a straight answer if the project needs a different approach. (See our resurface-vs-replace diagnostic guide for the full criteria.)
- Crack repair. Hairline and minor cracks get cleaned out, dried, and filled with a structural epoxy crack-fill compound. Larger cracks (up to about 1/4 inch) get a deeper repair with a flexible polymer-modified mortar that will move with the slab.
- Mechanical surface preparation. This separates Sierra Stone from cheaper coating jobs. The slab is pressure washed at high pressure, then ground or shot-blasted to expose a clean, slightly-porous concrete surface profile (CSP-3 to CSP-4 by ICRI standards) that the epoxy primer can mechanically bond to. Without this, no chemical primer in the world will give you 25-year adhesion.
- Substrate repair. Any spalled, soft, or contaminated sections of the slab get cut back to sound concrete and feathered with a structural patching compound.
- Edge detail prep. Pool coping, deck drains, expansion joints, and any other transitions get masked and prepped so the finished edges land clean.
By the end of day one the slab is dry, clean, profiled, and ready. To the homeowner it looks worse than when the crew arrived. That's a good sign — it means the prep was real.
Day two: base coat and aggregate broadcast
This is the day the finish appears.
- Primer application. A penetrating epoxy primer is rolled onto the prepared concrete. The primer soaks into the now-porous surface and chemically links to the substrate. This is the mechanical anchor for everything that comes next.
- Epoxy base coat. While the primer is still tacky, the crew trowels on a thicker layer of industrial-grade epoxy. This is the matrix the stone aggregate will sit in. It goes down at a consistent thickness across the entire slab so the finished surface is uniform.
- Stone aggregate broadcast. While the epoxy is still wet, natural river-stone aggregate is broadcast across the surface in a controlled blanket. The amount, distribution, and pattern of the broadcast is what gives the surface its visual character — and it has to happen in the working window of the epoxy, which is usually 20 to 40 minutes per section depending on temperature. This is where experienced crews earn their pay. The aggregate distribution can't be uneven, can't be sparse, and can't pool — it has to be a consistent natural-stone field across the entire area.
- Excess aggregate recovery. Once the epoxy has set enough to hold the stone in place, the unbonded surplus is swept or vacuumed off the surface. That recovered stone is reused on the next pour-back area or saved for future projects.
- Initial cure. The base coat with the aggregate set into it cures overnight. By morning it's hard enough to walk on lightly for the next phase.
End of day two and the finished colour is visible. Homeowners regularly walk out and stop on the back step — *this is what it's going to look like?* It already looks finished. It isn't quite.
If you want to see your specific surface previewed in any of Sierra Stone's twelve stone finishes *before* the crew arrives, the free AI visualizer renders a photorealistic preview from any photo you upload. The result on day two should look close to the visualizer's preview.
Day three: topcoat, slip-resistance, and clean detail
The final day is what protects everything underneath and gives the surface its working properties.
- Aggregate inspection. The crew walks the surface and checks for spots where the aggregate is thin, uneven, or has settled differently. Any touch-ups happen here.
- Slip-resistant texture pass. A clear texture additive is incorporated into the final coats. This is what gives a Sierra Stone surface its slip resistance — particularly critical around pools, on steps, and on sloped walkways. (DCOF wet-area readings typically come in at 0.65 or higher — well above the 0.42 minimum required for wet-area pool environments.)
- UV-stable urethane topcoat. A clear industrial urethane is applied over the entire surface. This is the wear layer that takes the foot traffic, the UV exposure, the chlorine splash, the sunscreen, the BBQ grease — everything the surface will meet for the next 25 years. Consumer-grade urethane sealers fail within a few years under Okanagan sun. The topcoat Sierra Stone uses is engineered for sustained UV and chemical exposure.
- Edge detail and finishing. Pool coping, expansion joint reveals, and step nosings get their final detail work. Masking comes off. Drains are cleared.
- Final cure window. The completed surface needs about 24 hours before light foot traffic and 48 to 72 hours before heavy use (furniture, pool re-fill, vehicles). Most homeowners are walking on the surface in bare feet on the third or fourth morning.
The crew leaves at the end of day three. The job is done. Nothing has been demolished. Nothing has been hauled away. The yard, except for the surface itself, is exactly as it was on Monday morning.
What the homeowner experiences
The visible difference between a Sierra Stone install and a traditional concrete replacement is hard to overstate. From the homeowner's side of it:
- No demolition noise. Surface prep is loud for a few hours on day one; the rest of the install is quiet trowel and roller work.
- No driveway blockage or staging issues. The crew works out of a single trailer and consumes the existing slab in place — there's no concrete truck, no pump, no formwork to stage.
- No mud and no debris. The existing slab does not move. The yard stays clean.
- The pool can stay full. For pool deck resurfaces, the existing coping and tile line are masked and protected — the pool doesn't need to be drained.
- A finished, walkable surface within 96 hours of arrival.
The economic case for resurfacing over replacement is already strong on price alone (see our detailed cost comparison for the math). The case for *timing* — three days versus a lost summer — is what makes it the obvious choice for most Okanagan homeowners with sound slabs.
What it doesn't fix
Honesty matters here. Stone coating is a resurfacing system, not a foundation repair. It will not fix a slab that has settled, heaved, cracked through, or lost drainage. The day-one structural assessment is where Sierra Stone's team tells you straight whether your slab is a resurface candidate or not.
Most are. The vast majority of Okanagan slabs that *look* like they need replacement actually just need their surface restored. The structural concrete underneath is usually fine for another fifty years — only the wear layer has aged out.
Booking a project
Sierra Stone runs free in-home estimates anywhere in the South and Central Okanagan — Kelowna, West Kelowna, Lake Country, Peachland, Summerland, Penticton, Naramata, Okanagan Falls, Vernon, and Coldstream. The estimate includes a structural assessment of your slab, a written quote, and a straight answer about whether resurfacing is the right call. No obligation. No pressure.
Call (250) 808-9425 to schedule. Summer install windows fill fast — most weeks of June, July, and August are booked four to six weeks ahead. Late spring and early fall are typically the easiest to book and the most comfortable working temperatures for the crew.
Sierra Stone — quick links
- AI Visualizer: sierrastonesouthcentral.com/visualizer — BC's only free instant stone-coating preview tool.
- Phone: (250) 808-9425 · free in-home estimates from Penticton to Vernon.
- Website: sierrastonesouthcentral.com
- Google Business Profile: Reviews and hours
- Listing on OKTD: Sierra Stone — Concrete Finishing, Restoration, Renovations