Negative Side Membrane https://www.concreteremedialgroup.com/apps/photos/ Negative Side Membrane Negative Side Membrane ( Brick Wall ) https://www.concreteremedialgroup.com/apps/photos/photo?photoID=205179732 205179732 Negative Side Membrane ( Block Wall ) This repair was a cemetitious crystalline membrane applied on the negative side to stop efflorescent growth and moisture ingress transferring through the blocks from the back fill behind. This can be applied as a negative side waterproofing membrane or a positive side waterproofing membrane https://www.concreteremedialgroup.com/apps/photos/photo?photoID=205179734 205179734 Negative Side Membrane https://www.concreteremedialgroup.com/apps/photos/photo?photoID=205179735 205179735 Negative Side Membrane https://www.concreteremedialgroup.com/apps/photos/photo?photoID=205179736 205179736