Protection against ingress

BS EN 1504 Principle 1 is protection against ingress by reducing or preventing the ingress of adverse agents, e.g water, other liquids, vapour, gas, chemicals and biological agents. Protection against ingress includes measures to reduce the porosity or permeability of the concrete surface by treatment using surface protection systems to BS EN 1504-2 or sealing cracks by injection or filling to BS EN 1504-5.

Methods of protection based upon the BS EN 1504 Principle 1 is the use of the following:

1.1 Surface impregnation.

1.2 Surface coating with and without crack bridging capability.

1.3 Locally bandaged cracks.

1.4 Transferring cracks into joints.

1.5 Erecting external panels.

1.6 Applying membranes.