To prevent strain ingress, it is suggested that a compatible impregnator be applied
on the surfaces of agglomerated marbles. Impregnator is a subsurface treatment,
formulated to penetrate the stone which enhances resistance to stains. The impregnator
will resist stain ingress from top and block entry of salts from bottom. Further information
on impregnators and its application can be found in Chapter 7.