Both cost roughly the same. Both outlast pavers. The right choice comes down to three things: how much sun the area gets, whether it will be walked on barefoot, and how much maintenance you are willing to do.
The short version
| Stamped | Exposed aggregate | |
|---|---|---|
| Cost (Calgary) | $18 – $24 / sq ft | $16 – $21 / sq ft |
| Look | Mimics stone, slate, brick, plank | Natural river rock texture |
| Grip when wet | Moderate – needs anti-slip additive | Excellent by nature |
| Barefoot comfort | Smooth and comfortable | Depends on aggregate size |
| Heat in full sun | Darker colours get hot | Stays cooler |
| Maintenance | Re-seal every 3–4 years | Optional seal; rinse clean |
| Hides dirt | Moderate | Very well |
Choose stamped concrete if…
You want a specific architectural look. Stamped is the only option that convincingly reads as slate, ashlar cut stone, or wood plank. If your patio needs to match stonework on the house, stamping gets you there.
The space is for lounging and dining. Smooth stamped surfaces are more comfortable underfoot, easier to place furniture on, and simpler to sweep.
You will keep up with sealing. Expect to re-seal every three to four years – a weekend job with a roller. Skip it for a decade and the colour goes flat.
Calgary caution: sealed stamped concrete gets slick when wet. On pool surrounds, steps, or any slope, insist on a clear anti-slip aggregate mixed into the sealer coat. It is invisible, costs almost nothing, and prevents the most common complaint about stamped work.
Choose exposed aggregate if…
Grip matters. Shaded north-side patios, sloped areas, walkways that ice over and pool decks all favour exposed aggregate. The texture is the surface, not a coating, so it does not become slippery as it ages.
You want low maintenance. Rinse with a hose, pressure wash once a year if you feel like it. No sealer required for durability. The texture hides dirt, leaf stain and tire marks far better than any smooth finish.
The area bakes in afternoon sun. Lighter aggregate blends stay noticeably cooler than dark stamped concrete – a real consideration for a west-facing Calgary patio in July.
There is nothing to peel. The stone is embedded in the pour. No topping, overlay or coating that can delaminate. This is the biggest durability advantage.
How they age in Calgary specifically
Freeze-thaw is the real test, and both finishes handle it well provided the concrete underneath is right. The finish is cosmetic; the mix is structural. Either one poured at 32 MPa with 6% air entrainment on a compacted 150mm base will still be sound in twenty years.
Where they differ is how they show wear. Stamped concrete fades where the sealer wears thin, most visibly along traffic paths. Exposed aggregate has no sealer to fail, so it weathers evenly – it simply looks slightly lighter after a decade.
De-icing salt is harder on stamped work, because salt attacks the sealer first. If the patio connects to a walkway you will salt in winter, exposed aggregate is the safer pick.
Can you combine them?
Yes, and it often looks better than either alone. A common approach is exposed aggregate on the main patio field with a stamped border, or stamped near the house and exposed aggregate on steps and pool surrounds where grip matters. It costs slightly more in forming time but gives you comfort where you sit and traction where you walk.
The honest recommendation
For most Calgary backyards we lean exposed aggregate – lower maintenance, better traction through eight months of freeze-thaw, no sealer schedule to forget. Choose stamped when the look is genuinely the priority and the area is covered, sheltered, or purely for lounging.