Effloressence is the salts and the minerals being pushed through the substrate, usually caused by damp. In this case it's a single skin block workshop with the ground outside piled against the wall (workshop built into side of mound) This damp can not be "fixed" short of building a new workshop or a digger for extensive groundworks. Cleaning the mould off and treating with an Alkali resistant Primer and then respraying with masonry paint was all that can be done for a refresh. Will get a few years out of it. Could have looked at internal tanking, studding/insulating/boarding etc, but the costs on a rented run down workshop were not worth it. These workshops realistically need knocking down, but a refresh in the meantime keeps them looking fresher.
Effloressence is the salts and the minerals being pushed through the substrate, usually caused by damp.
In this case it's a single skin block workshop with the ground outside piled against the wall (workshop built into side of mound)
This damp can not be "fixed" short of building a new workshop or a digger for extensive groundworks.
Cleaning the mould off and treating with an Alkali resistant Primer and then respraying with masonry paint was all that can be done for a refresh. Will get a few years out of it.
Could have looked at internal tanking, studding/insulating/boarding etc, but the costs on a rented run down workshop were not worth it.
These workshops realistically need knocking down, but a refresh in the meantime keeps them looking fresher.