配方类型:

MATERIALS OF CONSTRUCTION

配方说明:

Sealer and Size for Newly Plastered Walls

配方组成:

Limed Rosin (6% Calcium Hydroxide)/35
Mineral Spirits/65

配制方法:

Cold-cut-in by tumbling overnight or melt the limed rosin by heating to 450'F. Cool to 400'F. with stirring and then add the solvent. Apply with a brush or by spraying. Allow to dry overnight and then apply flat white or cream-colored paint.
This may also be used on spots on a wall several years old where the lime in the plaster has burned or destroyed the binder in the original finish, producing an ugly area. The theory is, there is still enough free abietic acid in the partially limed rosin to neutralize the lime in the plaster. Unless the walls are exceedingly wet, one application usually suffices. Two coats should be ample for even the worst condition.