Question 1

Faded stamped patio in Westboro: resurface, reseal or replace?

Accepted Answer

Whether a faded stamped patio needs resealing, resurfacing or replacing depends on what is underneath the surface. If the slab is structurally sound, flat, and the pattern is intact, resealing is worth considering. If the surface is scaling, spalling, or has cracks that run through the slab, a resurfacing overlay or full replacement becomes the conversation. We found no published price for resealing or resurfacing alone, so get those scoped and itemized in writing.

Question 2

Does the Code set different rules for coloured concrete in Ontario?

Accepted Answer

We found no separate rules for coloured concrete in the 2024 Ontario Building Code. For exterior flatwork, the Code requires a minimum compressive strength of 32 MPa at 28 days and a maximum water-to-cementing-materials ratio of 0.45. Those numbers do not change because colour is added.

Question 3

How often should stamped concrete in Ottawa be resealed?

Accepted Answer

We found no published source that gives a resealing interval for stamped concrete in Ottawa, or for stamped concrete anywhere. The published intervals we found disagree with each other, and the right answer depends on the product used. Follow the sealer maker's instructions for the specific product applied to your surface. What does affect how often a stamped concrete surface needs attention is worth understanding.

Question 4

Why is my stamped patio flaking in Orleans?

Accepted Answer

Surface flaking on stamped concrete, called scaling, has a few possible sources worth having a contractor look at: the condition of the concrete at the time it was placed and finished, how it was cured, and what it has been exposed to since.

Stamped & Exposed Aggregate

Faded stamped patio in Westboro: resurface, reseal or replace?

Does the Code set different rules for coloured concrete in Ontario?

How often should stamped concrete in Ottawa be resealed?

Why is my stamped patio flaking in Orleans?