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  • Steel fence post installed below the frost line with a bell-shaped concrete footing and gravel drainage layer, illustrating proper fence post installation techniques for preventing frost heave in Canadian climates

    How Deep Should Fence Posts Be in Canada? Frost Line Guide by Province

    Frost line depths across Canada range from 45 cm on the BC coast to 165 cm in Quebec. Set your posts above the frost line and they will start heaving within two or three winters. Here is the complete provincial guide, the formula for calculating total post length, and the four steps that prevent frost heave from destroying a well-built fence.

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