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Old 2019-10-07, 12:01 PM
xdarrylx's Avatar
xdarrylx xdarrylx is offline
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Originally Posted by heather86 View Post
Hi Phil

I am wondering if this crack in my foundation is anything to be concerned about. It's in the basement of a new build that I have not taken possession of. The crack goes from wall to wall, about 19ft.

Any input you can provide would be appreciated.
Basements are full of them and hairline ones like that are no cause for alarm; it's the ones that measure a certain diameter (Phil can cite the code) that you need to be concerned with (i.e. able to fit a quarter into, or similar).

Congrats on your soon-to-be new home!
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Old 2019-10-17, 10:57 PM
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Inspector Phil Acker Inspector Phil Acker is offline
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Just for clarification, the crack shown in the picture is in the basement concrete floor.

Cracks in concrete floors in residential construction are not a structural concern. The norm is to have cracks in concrete floors, in the basement and in the garage concrete slab. The Ontario Building code does not have any requirements related slab cracks.

Just a note that there may be a concern for poured concrete floor structures in high-rises.

Tarion does have a warrantable item related to basement slab cracks. In th Tarion Construction Performance Guidelines, Condition 1.4. "Concrete Basement Floor Is Cracked", cracks greater than 4 mm in width are not acceptable. The method Tarion uses to measure crack width is with a 6 mm hex-key.
Phil Acker, P.Eng, RHI
Acker Home Inspection Inc.

WEB: www.ackerhome.ca
PHONE: 613-447-9660
E-MAIL: phil@ackerhome.ca
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