|Here the concrete
was real slick and not very porous. A test is to
splash water on the wall to see if it is
absorbed. This concrete required chipping to
rough up the surface and open pores. The
roughing up was done with an electric chipping
proofing must be chipped.
A bonding admixture is used to bond the new
mortar to the concrete. This is similar to
plastering a swimming pool.
||This concrete on
this EIFS tear-off was plenty porous with open
pits and holes, so it didn't require chipping.
An acrylic admixture is essential, at least in
the scratch coat.
Stucco is a good way
to erase those fake brick you see on new houses. If
the concrete is nice and straight, you can get by with a
fairly thin coating.