You do not need gravel under a deck footing — and putting it there means less concrete in the hole, a weaker bond, and an unstable bearing surface. Here’s where the myth comes from and what actually keeps a deck footing solid through a GTA winter.
Most of what’s written online about deck footings is wrong — and acting on bad advice means a failed inspection or a footing that moves. Here’s exactly how a code-compliant Ontario deck footing is made, why sonotubes are required, and how the bell base is actually created.
Strong deck footings are the difference between a deck that lasts decades and one that sinks, shifts, or fails inspection. Learn how proper footing location, excavation depth, concrete pouring, and precise leveling come together to build a safe, code-compliant deck in Ontario.
How deep do deck footings need to be in Ontario? The standard is 48 inches, but soil conditions, frost heave, deck size, and local building codes can all require going deeper. Learn when standard depth is enough and when your deck demands more to stay safe and stable long-term.
A great deck starts long before the first board goes down. From assessing your space and defining your style to choosing the right materials, structural framing, and safety features — this complete planning guide covers everything Ontario homeowners need to build a deck they’ll love for years.
