By Reggie Bullard
(PA) Historical Society recently acquired a building, part of the
of which is stuccoed. About 1950 a new cinder block addition was
covered with a thick bumpy cement stucco without lath. The
building, ca. 1824, is stone. We would now like to create a
finish on the stucco. Our mason initially suggested that the bumps could be ground off and the stucco painted to be compatible with the light brown fieldstone. He thought a grinder could be fabricated if
none was available. Having looked into it, he has changed his mind and says the only alternative is to remove the stucco and start over - which for us would be prohibitively expensive. Any idea how we can otherwise
obtain our desired result ?
The secrets of sandblasting and resurfacing the old stucco are:
1. The surface must have at least 90% or so of the
paint gone and rough with open pores.
2. You must mix an acrylic admix into the bonding coat.
There is an old fashion way that still is used in Latin America,
but it is too much trouble.
We use flex-con.:
You can use a bonding coat like they say
Don't ever use duct tape or you'll be cleaning glue off for weeks.