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Cinder block or other material for chimney? Charlie S. 05-11-2008
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Posted by Charlie S. on May 11, 2008, 11:19 pm
Chunks of our 40 year old cinder block chimney are falling to the ground.
Tomorrow, someone is coming over to give us an estimate. Originally, we
were just
going to rebuild from the roofline to the peak. But, I noticed that
there is water type deterioration 4 or bricks lower.

The chimney is up against the outside of the house. It goes from the ground
to the peak of a two story house with an attic. Thus, it is somewhat tall.

I'm wondering if there are different grades of cinder blocks that might last
longer? Or, other materials that are currently used for rebuilding that
might be stronger or better in some other way?




Also, have smaller brick chimney we are going to rebuild. Will ask about
that one in another post.





Posted by Charlie S. on May 12, 2008, 3:43 pm

> Chunks of our 40 year old cinder block chimney are falling to the ground.
> Tomorrow, someone is coming over to give us an estimate. Originally, we
> were just
> going to rebuild from the roofline to the peak. But, I noticed that
> there is water type deterioration 4 or bricks lower.
>
> The chimney is up against the outside of the house. It goes from the
> ground
> to the peak of a two story house with an attic. Thus, it is somewhat
> tall.
>
> I'm wondering if there are different grades of cinder blocks that might
> last
> longer? Or, other materials that are currently used for rebuilding that
> might be stronger or better in some other way?
>
>
Was given an estimate for rebuilding the chimney today. Seemed fairly
reasonable and most likely will go forward.

Found out a couple things.... One, that painting the chimney can trap
moisture and that if I do plan to paint the chimney I should use some sort
of breathable paint. He said latex tends to trap moisture. I didn't ask
him, but would that mean an oil based paint. That seems like it would trap
moisture more so? Is there a particular type of paint one should use?

The second thing I learned is that there are two sizes of blocks he can use.
One is the larger one which I believe would cover a complete section of the
chimney. Then, there are smaller ones that he would need to use two blocks.
He said the larger ones he can use on the bottom and weigh about 100 lbs.
The smaller one weigh about 50 lbs and he will use on top because it would
weigh too much to carry on his shoulders.

What surprised me is that he is not using some sort of pulley system to
carry these things up and down the staging. Maybe the pulley is too awkward
or time consuming. Can't figure out why they wouldn't have a simple pulley
system for this type of construction.



Posted by cshenk on May 12, 2008, 4:39 pm
"Charlie S." wrote

> Was given an estimate for rebuilding the chimney today. Seemed fairly
> reasonable and most likely will go forward.

Ok, not bad to get a second estimate if you can.

> Found out a couple things.... One, that painting the chimney can trap
> moisture and that if I do plan to paint the chimney I should use some sort
> of breathable paint. He said latex tends to trap moisture. I didn't ask
> him, but would that mean an oil based paint. That seems like it would
> trap moisture more so? Is there a particular type of paint one should
> use?

Not sure but I bet he will know.

> He said the larger ones he can use on the bottom and weigh about 100 lbs.
> The smaller one weigh about 50 lbs and he will use on top because it would
> weigh too much to carry on his shoulders.
>
> What surprised me is that he is not using some sort of pulley system to
> carry these things up and down the staging. Maybe the pulley is too
> awkward or time consuming. Can't figure out why they wouldn't have a
> simple pulley system for this type of construction.

Could be the lay of your land makes this hard. Difficult to tell.

Actually, I am curious about this. I've never heard of a cinderblock
chimney. Just brick ones.



Posted by hallerb@aol.com on May 12, 2008, 6:00 pm
> "Charlie S." wrote
>
> > Was given an estimate for rebuilding the chimney today. =EF=BF=BDSeemed =
fairly
> > reasonable and most likely will go forward.
>
> Ok, not bad to get a second estimate if you can.
>
> > Found out a couple things.... One, that painting the chimney can trap
> > moisture and that if I do plan to paint the chimney I should use some so=
rt
> > of breathable paint. =EF=BF=BDHe said latex tends to trap moisture. =EF=
=BF=BDI didn't ask
> > him, but would that mean an oil based paint. =EF=BF=BDThat seems like it=
would
> > trap moisture more so? =EF=BF=BDIs there a particular type of paint one =
should
> > use?
>
> Not sure but I bet he will know.
>
> > He said the larger ones he can use on the bottom and weigh about 100 lbs=
.
> > The smaller one weigh about 50 lbs and he will use on top because it wou=
ld
> > weigh too much to carry on his shoulders.
>
> > What surprised me is that he is not using some sort of pulley system to
> > carry these things up and down the staging. =EF=BF=BDMaybe the pulley is=
too
> > awkward or time consuming. =EF=BF=BDCan't figure out why they wouldn't h=
ave a
> > simple pulley system for this type of construction.
>
> Could be the lay of your land makes this hard. =EF=BF=BDDifficult to tell.=

>
> Actually, I am curious about this. =EF=BF=BDI've never heard of a cinderbl=
ock
> chimney. =EF=BF=BDJust brick ones.

have you considered a direct vent furnace and hot water tank? then
abandon and remove the chimey completely if you want

Posted by Charlie S. on May 12, 2008, 7:04 pm
> "Charlie S." wrote
>
> > Was given an estimate for rebuilding the chimney today. ?Seemed fairly
> > reasonable and most likely will go forward.
>
> Ok, not bad to get a second estimate if you can.
>
> > Found out a couple things.... One, that painting the chimney can trap
> > moisture and that if I do plan to paint the chimney I should use some
> > sort
> > of breathable paint. ?He said latex tends to trap moisture. ?I didn't
> > ask
> > him, but would that mean an oil based paint. ?That seems like it would
> > trap moisture more so? ?Is there a particular type of paint one should
> > use?
>
> Not sure but I bet he will know.
>
> > He said the larger ones he can use on the bottom and weigh about 100
> > lbs.
> > The smaller one weigh about 50 lbs and he will use on top because it
> > would
> > weigh too much to carry on his shoulders.
>
> > What surprised me is that he is not using some sort of pulley system to
> > carry these things up and down the staging. ?Maybe the pulley is too
> > awkward or time consuming. ?Can't figure out why they wouldn't have a
> > simple pulley system for this type of construction.
>
> Could be the lay of your land makes this hard. ?Difficult to tell.
>
> Actually, I am curious about this. ?I've never heard of a cinderblock
> chimney. ?Just brick ones.

have you considered a direct vent furnace and hot water tank? then
abandon and remove the chimey completely if you want

Never heard of them. Would it work with a force hot water system? Would I
have to buy a new boiler?



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