efforescent

Had some building work done last year include new French doors. Have been saving up some more £££ to finish the room. This winter I’ve noticed a patch of efflorescence. It didn’t happen last year. Seems a bit odd. Are there any immediate actions I should take? The second photo is under that...

Hi there I had a line of triangular bricks built on top of my wall and it looks great but I’ve got that efforescent white stuff that has run all down the wall. I’ve watched a couple of youtube videos and bought some ever build 401 high strength brick & patio cleaner. Followed the instructions...