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Home Repair - - If it ain't broken, don't fix it. Otherwise look here.
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Posted by MiamiCuse on November 17, 2009, 10:45 am
I have opened up some holes in the concrete block walls during my
electrical and plumbing projects, most of them the size slightly
larger than electrical boxes but some bigger.
I have decided that for the holes that are above the slab, I will use
those foamy GREAT STUFF products to just fill the gaps.
For holes that are on the wall but below the slab (my floor slab is
about 24" above grade) whether it may be above grade or below grade, I
will fill with some slurry mix or sand topping mix. The question I
have is how do I do this?
If I have a rough hole about 4"x4" in the block wall, a 3" pipe runs
through it, now I have narrow space of 1/2" more or less around the
edge of the pipe. How so I push or pack those mix in? Do I mix it
dry and push it in as much as I can with a stick? Does not think this
will create any uniform patch. Or do I mix it very wet and put it in
some sort of a cone with a small nozzle and try to force it into the
hole, sort of like how pastry chefs put cream in a paper cone and
squeeze them out to make patterns?
Thanks in advance,
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Posted by dadiOH on November 17, 2009, 12:37 pm
MiamiCuse wrote:
show/hide quoted text
> I have opened up some holes in the concrete block walls during my
> electrical and plumbing projects, most of them the size slightly
> larger than electrical boxes but some bigger.
> I have decided that for the holes that are above the slab, I will use
> those foamy GREAT STUFF products to just fill the gaps.
> For holes that are on the wall but below the slab (my floor slab is
> about 24" above grade) whether it may be above grade or below grade, I
> will fill with some slurry mix or sand topping mix. The question I
> have is how do I do this?
> If I have a rough hole about 4"x4" in the block wall, a 3" pipe runs
> through it, now I have narrow space of 1/2" more or less around the
> edge of the pipe. How so I push or pack those mix in? Do I mix it
> dry and push it in as much as I can with a stick? Does not think this
> will create any uniform patch. Or do I mix it very wet and put it in
> some sort of a cone with a small nozzle and try to force it into the
> hole, sort of like how pastry chefs put cream in a paper cone and
> squeeze them out to make patterns?
You want to patch the wall of the block, not necessarily fill it, right?
Stuff in a piece of building paper (so mortar won't fall through the cell),
push it below the opening and trowel it in and on.
--
dadiOH
____________________________
dadiOH's dandies v3.06...
...a help file of info about MP3s, recording from
LP/cassette and tips & tricks on this and that.
Get it at http://mysite.verizon.net/xico
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Posted by DanG on November 17, 2009, 9:52 pm
An extremely easy product to use - Structolite. Bonds very well
to block. Needs only water to mix. Perform the gross fill and
hold it down about an 1/8 below finish. Apply final coat. It can
be struck off with a board leaving a slightly torn surface that
will look just like the block. You can strike fake "mortar lines"
just before it is set. Once painted it will look just like the
block. I use this method to "repair" block walls after the
plumbers have destroyed quite a batch on a remodel or repair.
--
______________________________
Keep the whole world singing . . . .
DanG (remove the sevens)
dgriff237@7cox.net
show/hide quoted text
>I have opened up some holes in the concrete block walls during my
> electrical and plumbing projects, most of them the size slightly
> larger than electrical boxes but some bigger.
> I have decided that for the holes that are above the slab, I
> will use
> those foamy GREAT STUFF products to just fill the gaps.
> For holes that are on the wall but below the slab (my floor slab
> is
> about 24" above grade) whether it may be above grade or below
> grade, I
> will fill with some slurry mix or sand topping mix. The
> question I
> have is how do I do this?
> If I have a rough hole about 4"x4" in the block wall, a 3" pipe
> runs
> through it, now I have narrow space of 1/2" more or less around
> the
> edge of the pipe. How so I push or pack those mix in? Do I mix
> it
> dry and push it in as much as I can with a stick? Does not
> think this
> will create any uniform patch. Or do I mix it very wet and put
> it in
> some sort of a cone with a small nozzle and try to force it into
> the
> hole, sort of like how pastry chefs put cream in a paper cone
> and
> squeeze them out to make patterns?
> Thanks in advance,
> MC
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Posted by willshak on November 18, 2009, 11:31 am
on 11/17/2009 10:45 AM (ET) MiamiCuse wrote the following:
show/hide quoted text
> I have opened up some holes in the concrete block walls during my
> electrical and plumbing projects, most of them the size slightly
> larger than electrical boxes but some bigger.
> I have decided that for the holes that are above the slab, I will use
> those foamy GREAT STUFF products to just fill the gaps.
> For holes that are on the wall but below the slab (my floor slab is
> about 24" above grade) whether it may be above grade or below grade, I
> will fill with some slurry mix or sand topping mix. The question I
> have is how do I do this?
> If I have a rough hole about 4"x4" in the block wall, a 3" pipe runs
> through it, now I have narrow space of 1/2" more or less around the
> edge of the pipe. How so I push or pack those mix in? Do I mix it
> dry and push it in as much as I can with a stick? Does not think this
> will create any uniform patch. Or do I mix it very wet and put it in
> some sort of a cone with a small nozzle and try to force it into the
> hole, sort of like how pastry chefs put cream in a paper cone and
> squeeze them out to make patterns?
> Thanks in advance,
> MC
>
I patched a 6" hole where my well water line came into the basement
through the poured concrete wall. This was right after I had the house
built and moved in and noticed water seeping through the hole.
I used Drylok Fast Plug which can be used even if the water is seeping
in at the time.
http://www.ugl.com/drylokMasonry/patching/fastPlug.php
--
Bill
In Hamptonburgh, NY
In the original Orange County. Est. 1683
To email, remove the double zeroes after @
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> electrical and plumbing projects, most of them the size slightly
> larger than electrical boxes but some bigger.
> I have decided that for the holes that are above the slab, I will use
> those foamy GREAT STUFF products to just fill the gaps.
> For holes that are on the wall but below the slab (my floor slab is
> about 24" above grade) whether it may be above grade or below grade, I
> will fill with some slurry mix or sand topping mix. The question I
> have is how do I do this?
> If I have a rough hole about 4"x4" in the block wall, a 3" pipe runs
> through it, now I have narrow space of 1/2" more or less around the
> edge of the pipe. How so I push or pack those mix in? Do I mix it
> dry and push it in as much as I can with a stick? Does not think this
> will create any uniform patch. Or do I mix it very wet and put it in
> some sort of a cone with a small nozzle and try to force it into the
> hole, sort of like how pastry chefs put cream in a paper cone and
> squeeze them out to make patterns?