A little Halloween project gone awry. Red paint splatters on flagstone.
Wife unhappy. How to get it off? I tried paint thinner - no effect.
Then I tried Circa 1852 paint stripper followed by hot water from a
garden hose. It lifted some of the paint but left most. Do I keep
going with the paint stripper or is there a better product/technique?
Get Goof-Off. There are a couple of products that use this name. Check the
Home Depot or Lowes paint department.
There may be some changes in the formula. I have an old can of it and it
will take of dry latex paint. In fact, they used to say that was how you
could tell if an old paint job was latex or oil. The Goof-off will remove
the latex but not the oil based paint.
Let the other junk evaporate. Spray well with Formula 409, let it soak
and not dry for about an hour. Scrub with firm brush. Rinse with hot
water. 409 got dried acryllic off wood, formica, for a neighbor of ours
who gave his painter too much beer. Not much will get paint OUT OF (not
off of) concrete or stone. Good luck.
After trying several cleaners and paint removers if there is still some
paint left stuck in the pores, you will need to etch it out. Since the
stone sounds like it is outside and thick and probably not sealed anymore, a
diluted mixture of muriatic acid (or some kinds of toilet cleaner with HCL
in it). This will dissolve a thin layer of the rock surface leaving a fresh
new clean rock in its place and all the remaining paint will fall off.
Don't use too much acid and flush with lots of water when you are done. HCL
will generally neutralize itself quickly on the ground due to the abundance
of stuff to react with.
I would paint over it before I would use muriatic. A neighbor in our
condo stained some furniture outdoors in a covered atrium, concrete
deck, dark brown stain. The condo board was rumbling, so I got out my
craft paint - acryllics in little $2 bottle from craft store, many
colors. The trick was to vary the color, not apply thick coat, and
feather it so it blends. Used a stencil brush, two colors, a base and a
lighter, to imitate concrete coloring. It's been pressure washed since
and it still hides the brown stain :o)
For Latex, try a product named Goof Off.
Paint thinners are typically for oil based paints. The old paint
stripper stuff likely was as well. The pressure washer idea wasn't a
bad one either.
I was pretty sure Goof-off only works on non-porous surfaces but I'm
willing to give it a shoot.
I'm going to rent an industrial strength pressure washer first. If that
doesn't work, I'll let it dry and then try the 409, then the Goof-off
and the muriatic acid last.
Thanks a bunch.
Latex paint does not respond to paint removers very well. On a
latex enamel removal job I had much better success with straight
lacquer thinner. It will soften it up enough remove. You might
need and old toothbrush or similar to get it out of the pores and
a final cleaning with a pressure washer.
(top posted for your convenience)
Keep the whole world singing . . . .
DanG (remove the sevens)
That's where I'm headed. Today, I borrowed a pressure washer and it did
nothing. My neighbour across the street who restores planes came over and
said calmly, "I have a sand blaster in the shop you know." Great neighbour.
Gonna try that tomorrow.
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