MarkhamBuilding InspectionsInspections

Installations of Stairs on Ceramic or Marble Flooring

Published by City of Markham

This is the City of Markham’s document, as published on its website on 18 October 2026. The municipality may have changed it since: check the current version at the source. Legal notice

Type: Guide
Published by: City of Markham
Date: January 1, 2025
For: builder
Building types: All building types
Pages: 2

Overview

Issue No. 7 of the City of Markham's Builder Tips, dated January 1, 2025 and listed with its 2024 Ontario Building Code housing tips, on keeping stair risers uniform where a flight lands on ceramic, porcelain or marble flooring. It quotes Article 9.8.4.4., Uniformity and Tolerances for Risers, Runs and Treads, with its 5 mm and 10 mm tolerances, and Article 9.8.4.1., Dimensions for Risers. The Objective explains why the first riser is critical, suggests oversizing it or shimming, and points to Builder Tip No. 54.

What it covers

9.8.4.4. Uniformity and Tolerances for Risers, Runs and Treads
9.8.4.1. Dimensions for Risers
Objective

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