University
Tested and Rated 'E' for Excellent
in Water Permeance Test on Masonry E514-74
A single
leaf hollow concrete block wall, given the recommended Sealit treatment,
was subjected to the equivalent of 140mm/h
rain and 100km/h wind for 3 days. It was rated
in the highest class for resistance to water permeance, 'E' (for
Excellent), with zero water penetration
after 3 days.