Not sure what to use, so I'll see if anyone else has done it...

Need to turn a Once Upon A Time exterior concrete block wall (they
added on the current garage about 40 years ago) into a proper interior
wall - the previous owners cheated and glued cork over the stucco.

Now I need to strip off the top layer of color coat and the mastic
from the cork tiles - about 1/4" max and leave some "tooth", and put a
skim layer of California One-Kote interior plaster A little sanding,
a little PVA Primer, a little paint... Instant interior wall..

Needle scaler? One of Tom's Ohio Brush impact brushes? Some sort
of power scraper?

The 5-HP Compressor and refrigerated air dryer are 10' away, so
power is not an issue - but false starts are. Harbor Freight, Home
Depot and OSH are two miles away.

Have to dig a slot and bury the light switch electrical steel flex
conduits flush into the wall too, but that's not a problem.

-- Bruce --

Bruce L. Bergman wrote:
Not sure what to use, so I'll see if anyone else has done it...

Need to turn a Once Upon A Time exterior concrete block wall (they
added on the current garage about 40 years ago) into a proper interior
wall - the previous owners cheated and glued cork over the stucco.

Now I need to strip off the top layer of color coat and the mastic
from the cork tiles - about 1/4" max and leave some "tooth", and put a
skim layer of California One-Kote interior plaster A little sanding,
a little PVA Primer, a little paint... Instant interior wall..

Needle scaler? One of Tom's Ohio Brush impact brushes? Some sort
of power scraper?

The 5-HP Compressor and refrigerated air dryer are 10' away, so
power is not an issue - but false starts are. Harbor Freight, Home
Depot and OSH are two miles away.

Have to dig a slot and bury the light switch electrical steel flex
conduits flush into the wall too, but that's not a problem.

-- Bruce --


I had a similar problem with cleaning back a rough block wall that had a
mortar wash and paint on it. A needle scaler did the job well, I did
some of it with a pneumatic one, and the builders did the majority with
a larger rented electric needle scaler. Cleaned the wall up well prior
to rendering and top plaster coat.

Not sure what to use, so I'll see if anyone else has done it...

Need to turn a Once Upon A Time exterior concrete block wall (they
added on the current garage about 40 years ago) into a proper interior
wall - the previous owners cheated and glued cork over the stucco.

Now I need to strip off the top layer of color coat and the mastic
from the cork tiles - about 1/4" max and leave some "tooth", and put a
skim layer of California One-Kote interior plaster A little sanding,
a little PVA Primer, a little paint... Instant interior wall..


I've not done this, so you know exactly what this advice is worth. Having
said that, I've removed an amazing amount of stuff with a large angle
grinder and cup wheel wire brush. I'd use my paint booth air supply hood
doing this job.

There is a truly amazing number of cup brushes. I just went to McMaster web
site. Very nice selection guide. My guesses yielded part number 4782A13.
Confirm with Tom if you go this route.

Karl

Need to turn a Once Upon A Time exterior concrete block wall (they
added on the current garage about 40 years ago) into a proper interior
wall - the previous owners cheated and glued cork over the stucco.

Now I need to strip off the top layer of color coat and the mastic
from the cork tiles - about 1/4" max and leave some "tooth", and put a
skim layer of California One-Kote interior plaster A little sanding,
a little PVA Primer, a little paint... Instant interior wall..

Hardly instant, strap over the present mess assuming you can get the
strapping level, put up drywall or for faster results, prefinished drywall.
Suggest the strapping be nailed to the wall.

"David Billington" wrote in message
...
Bruce L. Bergman wrote:
Not sure what to use, so I'll see if anyone else has done it...

Need to turn a Once Upon A Time exterior concrete block wall (they
added on the current garage about 40 years ago) into a proper interior
wall - the previous owners cheated and glued cork over the stucco.

Now I need to strip off the top layer of color coat and the mastic
from the cork tiles - about 1/4" max and leave some "tooth", and put a
skim layer of California One-Kote interior plaster A little sanding,
a little PVA Primer, a little paint... Instant interior wall..

Needle scaler? One of Tom's Ohio Brush impact brushes? Some sort
of power scraper?

The 5-HP Compressor and refrigerated air dryer are 10' away, so
power is not an issue - but false starts are. Harbor Freight, Home
Depot and OSH are two miles away.
Have to dig a slot and bury the light switch electrical steel flex
conduits flush into the wall too, but that's not a problem.

-- Bruce --


I had a similar problem with cleaning back a rough block wall that had a
mortar wash and paint on it. A needle scaler did the job well, I did some
of it with a pneumatic one, and the builders did the majority with a
larger rented electric needle scaler. Cleaned the wall up well prior to
rendering and top plaster coat.

Dang. I've used them for many hours on a ship, but would have never thought
of them for that application.

Steve

On Mon, 22 Sep 2008 08:44:37 -0600, "RJ" wrote:


Need to turn a Once Upon A Time exterior concrete block wall (they
added on the current garage about 40 years ago) into a proper interior
wall - the previous owners cheated and glued cork over the stucco.

Now I need to strip off the top layer of color coat and the mastic
from the cork tiles - about 1/4" max and leave some "tooth", and put a
skim layer of California One-Kote interior plaster A little sanding,
a little PVA Primer, a little paint... Instant interior wall..

Hardly instant, strap over the present mess assuming you can get the
strapping level, put up drywall or for faster results, prefinished drywall.
Suggest the strapping be nailed to the wall.

That would be prudent if the existing stucco wasn't sticking to the
blocks or was radically not level - but this is nicely level and flat.
Even the door casing comes up flush, so I don't have to make
extensions.

And you aren't supposed to use any sort of nails into concrete
blocks, the blocks tend to shatter and can make a structural mess out
of the wall - this is a bearing wall... You need to nail into the
horizontal mortar joints - and you have to know where they are. That
would mean stripping all the stucco to bare block.

The only safe way to blindly attach to concrete block is with a
carbide drill and either zinc or plastic expansion anchors, and that
is very slow. Been there...

-- Bruce --