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Posted by SteveBell on October 21, 2008, 8:55 am
Erik Dillenkofer wrote:
> > reqluq wrote:
> >
> >>> reqluq wrote:
> > > >
> >>> > Don't know the terminology; sticking maybe? I am making a ac
> hole >>> > in wall smaller so I pour the bottom and did the sides.
> now I >>> > need to do the *roof/ceiling* of the hole.. it has eight
> inch >>> > blocks..some spaces to fill in em. What is the correct mix
> so >>> > when I apply the cement, gravity doesn't win all the time.
> >>> > Someone told me cement, lime and sand will do it..I wasn't using
> >>> > lime so that may be the case. if so what are the proportions
> >>> > and/or any other ideas? thanks req
> > > >
> >>> How to do it:
> >>> * Buy the premixed concrete.
> >>> * Add water until it's the consistency of peanut butter or
> thicker. >>> * Apply the concrete to the top of the hole.
> >>> * Put a wood form underneath to keep it from falling down.
> > > >
> >>> Pertinent question:
> >>> Why do you need to fill in the top? I'd just fasten the junction
> >>> box in the wall and leave it at that. (You do know that a junction
> >>> box is required, don't you?) If I needed insulation, I'd shoot
> some >>> expanding foam around it.
> > > >
> > > No junction box. it's a wall unit air condition, it slides right
> > > in the hole. You say: apply concrete to top of hole, then put
> > > wood to keep it from falling down..if it hasn't fallen down
> > > before I put the wood I don't need to put the wood.
> >
> > I'm sorry. I thought you were making an opening for an AC
> > (alternating current) junction box opening smaller. Chuckles all
> > round. :-) In that case, you would have forced the concrete into
> > the top of the hole, then put in a piece of wood to keep it from
> > slowly sagging. The small amount of very thick concrete would have
> > stayed in place long enough to get some support under it.
> >
> > On topic:
> > Build a wooden form. Somehow (how I don't know) get the concrete
> > into the form on top of the wood. This sounds difficult.
> >
> > I suggest you just insulate the inside of your concrete blocks with
> > expandable foam, then add wood trim to make the opening the right
> > size for your air conditioner. Finish off with some door casing to
> > hide the edges of the opening.
> How about installing a form board across the top of the hole,
> drilling holes into the block "voids", pouring concrete into those
> holes, then patching the holes?
Sounds like a plan to me.
--
Steve Bell
New Life Home Improvement
Arlington, TX
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Posted by reqluq on October 21, 2008, 2:34 pm
Excellent!
req
> How about installing a form board across the top of the hole, drilling
> holes into the block "voids", pouring concrete into those holes, then
> patching the holes?
>> reqluq wrote:
>>> > reqluq wrote:
>>> > > Don't know the terminology; sticking maybe? I am making a ac hole
>>> > > in wall smaller so I pour the bottom and did the sides. now I
>>> > > need to do the *roof/ceiling* of the hole.. it has eight inch
>>> > > blocks..some spaces to fill in em. What is the correct mix so
>>> > > when I apply the cement, gravity doesn't win all the time.
>>> > > Someone told me cement, lime and sand will do it..I wasn't using
>>> > > lime so that may be the case. if so what are the proportions
>>> > > and/or any other ideas? thanks req
>>> > How to do it:
>>> > * Buy the premixed concrete.
>>> > * Add water until it's the consistency of peanut butter or thicker.
>>> > * Apply the concrete to the top of the hole.
>>> > * Put a wood form underneath to keep it from falling down.
>>> > Pertinent question:
>>> > Why do you need to fill in the top? I'd just fasten the junction
>>> > box in the wall and leave it at that. (You do know that a junction
>>> > box is required, don't you?) If I needed insulation, I'd shoot some
>>> > expanding foam around it.
>>> No junction box. it's a wall unit air condition, it slides right in
>>> the hole. You say: apply concrete to top of hole, then put wood to
>>> keep it from falling down..if it hasn't fallen down before I put the
>>> wood I don't need to put the wood.
>> I'm sorry. I thought you were making an opening for an AC (alternating
>> current) junction box opening smaller. Chuckles all round. :-) In that
>> case, you would have forced the concrete into the top of the hole, then
>> put in a piece of wood to keep it from slowly sagging. The small amount
>> of very thick concrete would have stayed in place long enough to get
>> some support under it.
>> On topic:
>> Build a wooden form. Somehow (how I don't know) get the concrete into
>> the form on top of the wood. This sounds difficult.
>> I suggest you just insulate the inside of your concrete blocks with
>> expandable foam, then add wood trim to make the opening the right size
>> for your air conditioner. Finish off with some door casing to hide the
>> edges of the opening.
>> --
>> Steve Bell
>> New Life Home Improvement
>> Arlington, TX
>
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Posted by PeterD on October 21, 2008, 9:33 am
On Tue, 21 Oct 2008 02:50:39 +0000 (UTC), "SteveBell"
>reqluq wrote:
>> > reqluq wrote:
>> >
>> > > Don't know the terminology; sticking maybe? I am making a ac hole
>> > > in wall smaller so I pour the bottom and did the sides. now I
>> > > need to do the *roof/ceiling* of the hole.. it has eight inch
>> > > blocks..some spaces to fill in em. What is the correct mix so
>> > > when I apply the cement, gravity doesn't win all the time.
>> > > Someone told me cement, lime and sand will do it..I wasn't using
>> > > lime so that may be the case. if so what are the proportions
>> > > and/or any other ideas? thanks req
>> >
>> > How to do it:
>> > * Buy the premixed concrete.
>> > * Add water until it's the consistency of peanut butter or thicker.
>> > * Apply the concrete to the top of the hole.
>> > * Put a wood form underneath to keep it from falling down.
>> >
>> > Pertinent question:
>> > Why do you need to fill in the top? I'd just fasten the junction
>> > box in the wall and leave it at that. (You do know that a junction
>> > box is required, don't you?) If I needed insulation, I'd shoot some
>> > expanding foam around it.
>> >
>> No junction box. it's a wall unit air condition, it slides right in
>> the hole. You say: apply concrete to top of hole, then put wood to
>> keep it from falling down..if it hasn't fallen down before I put the
>> wood I don't need to put the wood.
>I'm sorry. I thought you were making an opening for an AC (alternating
>current) junction box opening smaller. Chuckles all round. :-) In that
>case, you would have forced the concrete into the top of the hole, then
>put in a piece of wood to keep it from slowly sagging. The small amount
>of very thick concrete would have stayed in place long enough to get
>some support under it.
>On topic:
>Build a wooden form. Somehow (how I don't know) get the concrete into
>the form on top of the wood. This sounds difficult.
>I suggest you just insulate the inside of your concrete blocks with
>expandable foam, then add wood trim to make the opening the right size
>for your air conditioner. Finish off with some door casing to hide the
>edges of the opening.
Another way would be to frame the bottom piece, and one side. Then
fill that space with a very dry mix, and slap on the other side when
the space is filled. A couple of big C clamps could be used to hold
the side on as the mix set.
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Posted by jloomis on October 21, 2008, 9:00 am
In some cases I have drilled small holes with masonary drill bit (rotary
hammer drill) in the concrete hole area and attached any metal screws and
hardware cloth to give concrete a "web" like mesh to hold concrete.......
jloomis
> Don't know the terminology; *sticking* maybe? I am making a ac hole in
> wall smaller so I pour the bottom and did the sides. now I need to do the
> *roof/ceiling* of the hole.. it has eight inch blocks..some spaces to fill
> in em. What is the correct mix so when I apply the cement, gravity doesn't
> win all the time.
> Someone told me cement, lime and sand will do it..I wasn't using lime so
> that may be the case. if so what are the proportions and/or any other
> ideas?
> thanks
> req
>
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Posted by reqluq on October 21, 2008, 2:37 pm
Hey this gives me an idea: stell mesh that they use to put concrete on wood
or join corners so they don't crack. then paste away
thanks for the suggestions folks
req
> In some cases I have drilled small holes with masonary drill bit (rotary
> hammer drill) in the concrete hole area and attached any metal screws and
> hardware cloth to give concrete a "web" like mesh to hold concrete.......
> jloomis
>> Don't know the terminology; *sticking* maybe? I am making a ac hole in
>> wall smaller so I pour the bottom and did the sides. now I need to do the
>> *roof/ceiling* of the hole.. it has eight inch blocks..some spaces to
>> fill in em. What is the correct mix so when I apply the cement, gravity
>> doesn't win all the time.
>> Someone told me cement, lime and sand will do it..I wasn't using lime so
>> that may be the case. if so what are the proportions and/or any other
>> ideas?
>> thanks
>> req
>
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