In this video we show you how to build, setup and pour a concrete foundation for a room addition, ADU or even a garage.
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If you are planning a room addition or an accessory dwelling unit (ADU), you can save money by building your own concrete foundation. Here are the steps to DIY a concrete foundation:

  1. Excavate the area for the foundation
  2. Set up formwork for the concrete
  3. Pour and level the concrete

Conclusion: Building your own concrete foundation for a room addition or ADU can be a cost-effective option, but it requires careful planning, proper equipment and materials, and knowledge of concrete pouring and curing techniques.

FAQs

Q: What are the benefits of DIY concrete foundation?

A: DIY concrete foundation can save money on labor costs and give you more control over the construction process.

Q: What are the potential challenges of DIY concrete foundation?

A: Building a concrete foundation requires skill and experience, and mistakes can result in costly repairs. It also requires heavy lifting and the purchase or rental of specialized equipment.

Q: Is a concrete foundation a requirement for a room addition or ADU?

A: Yes, a solid and stable foundation is essential for any room addition or ADU to ensure the structural integrity and safety of the new space.



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32 Comments
  1. @robertnash2446 2 years ago

    I like everything but the concrete leaking out the bottom of the forms….you should of put another form board along the bottom of the forms.

  2. @user-tf5qo8ug8z 2 years ago

    $65 a boards wow I pay $20 in Florida

  3. @user-hi4pw7ol5j 2 years ago

    Did I hear you say that the mix was pea gravel??? I thought pea gravel was used for filling cells. 3/4 gravel for footings and slabs. Maybe you don’t need to vibrate because you don’t use 3/4 gravel???

  4. @forrestlana 2 years ago

    senacional!.. thnks for share!

  5. @chrisunderhill8853 2 years ago

    wish you all were out here in okc.

  6. @teoscott1 2 years ago

    nice video. Is there any part two for the walls?

  7. @K-md7br 2 years ago

    Cost of this job? How many sq ft?

  8. @russelanderson5856 2 years ago

    I appreciate your knowledge and your willingness to share. I've been in the tile industry for 48 years, contracting for 35. Learned a lot along the way about various trades but not critical details on concrete. I'll certainly be utilizing your offerings as I begin doing smaller room additions and such now that I'm retiring from daily contracting. Thanks for bringing us along.

  9. Good heck they're building things to last hundreds of years now or more on single family homes lol. Somebody must think humanity is going to survive to keep using them for a very long time. Meanwhile it seems like the opposite every day on the news and in politics, or in end of the world movies all of the time lol

  10. @tsjuno 2 years ago

    Looks great. I’m planning on doing an ADU as well. No control joints needed in this slab?

  11. @thealterator 2 years ago

    have you got in contact with the owner for a completed building shot?

  12. @joeriley3407 2 years ago

    Great video nice job well explained right to it!!

  13. @joecox9958 2 years ago

    very nice! which city you support? CA code now asks bolt 2.5'? 10 years ago it is 6'.

  14. @ArmandoAcevedo-us5es 2 years ago

    How much you charge $ for this show

  15. @mikecrawford5331 2 years ago

    Is it ok not to put gravel under the footing part?

  16. @dinatal4439 2 years ago

    Yay you guys are local!

  17. Good construction

  18. @Sophia1a1 2 years ago

    Now this is hard work.

  19. Good for make foundation

  20. @579Jacob 2 years ago

    Hey are you able to do anything about the separation/cold joints that you get when pouring in multiple segments? I've heard that you can if done properly and that won't be an issue but do you think it's possible to do a good/long lasting job if done properly?

  21. @joachimdeussen 2 years ago

    And i thought we Germans tend to overengineer thinks. But this foundation can host a 3 storie house. Not just a room. Compered to the rest of the house in the background this is overkill. But anyway… good job.

  22. Yep ~ great video!! Thank you! I’m inspired to move forward with my project!

  23. @ourmandan 2 years ago

    your presentation is excellent. Thanks for the lesson

  24. @forbiddenfaygo9413 2 years ago

    TYSM helped so much !!

  25. @sfisomtshali 2 years ago

    Thank you 👍 to give me this expression 👍😊

  26. @lyricals2255 2 years ago

    u dont need pcc at the edges before pouring concrete?

  27. @JasonSigman 2 years ago

    How much does a slab pour like this cost… in the ballpark? $5K?? $10K? Asking for a friend. 😉

  28. @SolidMikeP 2 years ago

    Great video man!

  29. @Sam_Dxb 2 years ago

    Great work, I would like to know how much will cost me to do same foundation of 500 square feet?

  30. @omnivore8225 2 years ago

    I have to say that I'm impressed. Watching how experts go through their process allows us to understand the value of the experience it has taken to get to this level of craftsmanship. The ONLY thing that this DIY'er can see that was missing from this video was the way the re-bar ties into the existing foundation were brought in to line with the planned slab. (Yes, I know it seems obvious but, as said I'm a DIY'er.) Nice Messrs O'Dell. Much appreciated. Thank You.

  31. @romanleon76 2 years ago

    And…… they forgot to treat the soil for subterranean termites😂😂😂 down here in Florida it's mandatory.Where's this?

  32. @yzcrkxrm1 2 years ago

    When are sttb bolts used?

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