steve ralph
Hi rod efflorescence is the salts coming out the cement it will stop the stain could be rust cheers steve
Brown straining coming through external rendering
Posted by Rod Hoy, on
On a block of apartments we have brown staining and effloressence coming through external walls of balcony arches and soffits
Gary Branch
If the staining is near corners & edges it could be angle beads rusting & coming through G. Branch plastering
