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Old 02-25-2013, 05:50 PM   #16
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Best way to fill big hole in foundation


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Concrete grout,a sand and cement mix,and when you get it poured tap the form board a half dozen times to ensure a nice smooth finish when you remove the board.
Thanks, Canary. Can you Fill me in a little on this- as it seems too easy. No rebar? No stones in the mix? Just concrete grout? Home Depot has it? You done this before? This has as much "strength as the "other" way? Understand, I need more here, but appreciate your concern/help. This is major here, but if this works, Im for it.

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Old 02-25-2013, 06:18 PM   #17
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Best way to fill big hole in foundation


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Thanks, Canary. Can you Fill me in a little on this- as it seems too easy. No rebar? No stones in the mix? Just concrete grout? Home Depot has it? You done this before? This has as much "strength as the "other" way? Understand, I need more here, but appreciate your concern/help. This is major here, but if this works, Im for it.

Your patching a hole not building Sears tower,what's the rebar going to do,you don't need strength, the walls been standing for how long now??
Yes Home Depot has it,and i worked for a redi-mix producer for 35 years and have seen many holes patched this way.
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Old 02-25-2013, 07:53 PM   #18
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Best way to fill big hole in foundation


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Your patching a hole not building Sears tower,what's the rebar going to do,you don't need strength, the walls been standing for how long now??
Yes Home Depot has it,and i worked for a redi-mix producer for 35 years and have seen many holes patched this way.
LOL!! Sears Tower!
You got a good point, canary. Right- hole in wall sbeen there for maybe ....years. And it never seeps water even in the worst rains.

So, just any 25lb bag of say, coarse grout (for floor ceramic tile, say)?

For sure I will need enough for say, 6 CF......
Tanks, canary, for persisting with me and my concerns!!! Youve givemn me much hope/inspiration!
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Old 02-25-2013, 07:57 PM   #19
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Best way to fill big hole in foundation


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Concrete grout,a sand and cement mix,and when you get it poured tap the form board a half dozen times to ensure a nice smooth finish when you remove the board.
OOps, just realized you already posted the exact stuff, Cannary. Concrete grout it is. I will ask for it specifically, I guess....
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Old 02-25-2013, 08:47 PM   #20
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Best way to fill big hole in foundation


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OOps, just realized you already posted the exact stuff, Cannary. Concrete grout it is. I will ask for it specifically, I guess....

Yup,just a sand and cement mix,no coarse aggregate.
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Old 02-26-2013, 05:01 AM   #21
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when we do this type of patch, we always mechanically attach it to the surrounding conc,,, bulldog some holes in top, btm, & both sides,,, we insert 3/8 x 8" bolts 3" into the holes,,, CLEAN the sidewalls well & nail on a plywood plate leaving 3" open on the top edge,,, mix grout & pour into the form'd hole,,, when set, remove the ply form & finish w/hydraulic the other methods also work but this is the 1 we use
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Old 02-26-2013, 12:38 PM   #22
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Best way to fill big hole in foundation


Fit a steel safe to it, then put a storage cabinet in front of it, or hang a picture over it. Nobody will ever look there for valuables.
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Old 02-26-2013, 01:12 PM   #23
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Best way to fill big hole in foundation


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Fit a steel safe to it, then put a storage cabinet in front of it, or hang a picture over it. Nobody will ever look there for valuables.
Thats what I was thinking too
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Old 02-26-2013, 03:01 PM   #24
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Thats what I was thinking too
Must be a Texas thing.
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Old 02-26-2013, 03:31 PM   #25
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Best way to fill big hole in foundation


I will agree with others that no rebar is absolutely needed.
Sometimes when we give advice over the internet, we tend to go just a bit further to be safer and give good advice.
Anytime I pour a footing for a footing on a new addition, I am required by code to use rebar to tie it into the original footing/foundation.
And since this wall seems to be part of the foundation, I just naturally think rebar. It really would help tie in the new concrete to the old. Besides it would be free for me
My boss has told me 100 times, if I am working on my house or a side job for someone else, and the material is sitting in the yard, USE IT! Tired of storing it.

Since others do not see the hole as a foundation or strength issue.
Maybe it would be more productive to frame it with wood and close it in.
Looks kinda deep, might find that you can just fur out the walls and insert a cabinet. Or just build shelfs. Would now look like it has a purpose and not just a hole in the wall.

Question is, is it structural or not?
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Old 02-26-2013, 03:42 PM   #26
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Tyanks, people. yes, a little deep, but not so much- say, 15" or so- just enough for the imbecile to stick the nose of his boat in. Good tip on forming a few shelves in there! That way, if prospective future buyer, I can say this garage comes with built in shelving that doesnt take space away from car parking area!!!! LOL

Now, at least, I have many good ideas, and feel better that it may not be necessary to rebar. But, if you look at the picture again, see the 2 rebar nubs sticking downward, from the top edge? Those should help in "hooking" the new concrete/grout. I will make this a job with less urgency than I though, I guess. It will get done.
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Old 03-01-2013, 07:52 AM   #27
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OK, is this the stuff?

http://www.homedepot.com/p/t/1005988...7#.UTCyK1eAt2A
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Old 03-01-2013, 08:05 AM   #28
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when we do this type of patch, we always mechanically attach it to the surrounding conc,,, bulldog some holes in top, btm, & both sides,,, we insert 3/8 x 8" bolts 3" into the holes,,, CLEAN the sidewalls well & nail on a plywood plate leaving 3" open on the top edge,,, mix grout & pour into the form'd hole,,, when set, remove the ply form & finish w/hydraulic the other methods also work but this is the 1 we use
Instructions say to [grease/lubricate] the form surface so it wont stick to grout when set. Do I need to spray WD 40 to the plywood?

Also, how long before I can remove the plywood?

Thankls!! getting there!!!!!!!
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Old 03-01-2013, 09:03 AM   #29
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Best way to fill big hole in foundation


Just get a bag or two of ready mix. If you can find a 5 gallon pail of broken concrete. Mix the ready mix stiff, use a trowel and place a layer of ready mix. Place some small pieces of the broken concrete then a layer of ready mix. Continue until the hole is filled and flush with the wall. Use a straight 1 x 4 board edge to check it is flush with the wall. If you want put a few rebar in.
Done this many times!
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Old 03-01-2013, 09:38 AM   #30
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Yes that's what you want,and yes to the WD40 and you can remove the form after 4-5 hours,remember pour it a little on the dry side.

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