Are basement concrete cracks anything to be worried about? 

Great Explanation of cracks normal and concerning; helped me sleep a little better!

Very helpful video. This is my first post ever and it’s to say thank you and good job on making this. I will actually sleep tonight.

Thanks, it is informative enough to guide anyone to a professional for an adequate evaluation.

Great video man, answered a lot of my questions. Thank you very much, it's highly appreciated.

Thank you thank you. I appreciate your knowledge and explanation.

Thank you for making this video. I bought my '86-built house in 2016 and I'm finally pulling up the finished basement to moisture seal and add insulation. I was concerned about the filled floor cracks running along the midspan supports. Your explanation and additional information is exactly what I needed to know.

Really helpful explanation, thank you.

Thank you, helpful

This was super helpful, thank you!

Very helpful. Thank You

Never usually comment. However, great video and super informative. Thanks.

Wow BJ was happy to see your video pop up in my feed! Met you a long time ago I'm Mel's cousin from Toronto. Keep up the good work buddy.

Do you have a recommendation of which caulk to use to fill the cracks? The builder filled in some cracks 15 years ago but the old caulk has dried out and I need to redo.

Thank you for your last conclusion! I just had a basement window cut. I did put a 3"x4"x3/8" steal lintel above window, but after window was installed, I noticed a hairline crack beside window, it might has been there for many years or might started yesterday? I worried a lot, your conclusion makes me feel like I am OK. I will keep monitoring the crack before I put insulation and drywall.

Great video! I have all control joints of the basement floor cracked and I’m wondering if I should do something about it before finishing the basement with vinil plank flooring? It looks like the previous owner put some drywall exactly on top of some of these control joints, so that makes it “fun” to dry to get to the joints and caulk them, hence my question if I should do something about it or not. Thanks

I just bought a 1970 house. ripped the basement floor to redo from scratch.... the ciment floor has several hairline cracks. should I open them and pour leveling ciment or since there is probably no vapor barrier under the slab , paint a sealer or epoxy b4 rebuilding the floor?

Help BJ, I am finishing my basement, put up a 50' wall and now my floor is cracked heaving up a 3/16" x 10'. Wondering if my walls are too tight putting downward pressure on one side causing the other side to heave upward. smh.

Can you drill a hole in am existing basement wall, cinder block, And pour in concrete to address the cracks????? I was told it can be done?? Thank you

Any tips to fill in cracks?

Can this logic applies to house built in 1925??

could these cracks cause radon or moisture/water to seep in?

Poured concrete walls shouldn't even be allowed. They're straight garbage. I've lived in 100+ year old homes that didn't have cracks in the basement walls.