My garage floor looks ugly because of spotty efflorescence, recurring
especially in winter. It disappears when I power-wash it but after a few
weeks it recurs. I have also washed it with mild acid which, too, makes is
go away for a while.

My home is 30 years old. There are no cracks in the floor. The white stuff
just does not look right.

Can I paint over this stuff with epoxy, or cover it up somehow?

Anyone has the same problem and solved it?

--

www.rationality.net

On 04/29/2015 05:16 PM, Walter E. wrote:
My garage floor looks ugly because of spotty efflorescence, recurring
especially in winter. It disappears when I power-wash it but after a few
weeks it recurs. I have also washed it with mild acid which, too, makes
is go away for a while.

My home is 30 years old. There are no cracks in the floor. The white
stuff just does not look right.

Can I paint over this stuff with epoxy, or cover it up somehow?

Anyone has the same problem and solved it?




http://www.delawarequarries.com/clea...orescence.html

On Wednesday, April 29, 2015 at 6:48:16 PM UTC-4, philo wrote:
On 04/29/2015 05:16 PM, Walter E. wrote:
My garage floor looks ugly because of spotty efflorescence, recurring
especially in winter. It disappears when I power-wash it but after a few
weeks it recurs. I have also washed it with mild acid which, too, makes
is go away for a while.

My home is 30 years old. There are no cracks in the floor. The white
stuff just does not look right.

Can I paint over this stuff with epoxy, or cover it up somehow?

Anyone has the same problem and solved it?




http://www.delawarequarries.com/clea...orescence.html

In addition googling "painting over efflorescence" will produce
a lot of info. The efflorescence is minerals leaching through
the concrete via moisture from below. I've never tried to paint
anything that had it, but I would suspect that it's likely the
paint will fail as the process continues under the new paint.