Pouring, Curing & the Code
The 2024 Ontario Building Code's concrete rules, cold-weather pours, curing and when new concrete can be used
How long does new concrete take to cure in Ottawa?
The 2024 Ontario Building Code requires that when the air temperature is below 5 °C, freshly placed concrete be kept at not less than 10 °C for 72...
Does the Code set a curing time for patios in Ontario?
Only for cold-weather work does Ontario's 2024 Building Code set a time: when the air temperature is below 5 °C, concrete must be kept at not less...
Does rain right after a pour hurt Ottawa concrete?
We found no Building Code clause or neutral source that says how rain affects a fresh pour, so the protection plan belongs in your contractor's...
Pouring concrete on frozen ground in Ottawa: allowed?
Two clauses of Ontario's 2024 Building Code bear on this. Section 9.3.1.9 says no frozen material or ice shall be used in concrete, and that when the...
What is the strength rule for Ontario garage floors versus patios?
The 2024 Ontario Building Code sets a minimum compressive strength of 32 MPa at 28 days for garage floors, carport floors and all exterior flatwork....