White Spots on Facade
These white spots appeared on the facade of my building after some of this winter’s storms, and seem to be getting worse. Does anyone know what they are and how to get rid of them? Thanks!
These white spots appeared on the facade of my building after some of this winter’s storms, and seem to be getting worse.
Does anyone know what they are and how to get rid of them?
Thanks!
At this point, a permanent solution will be the replacement of defective patching with a natural stone repair mortar.
There are several repair mortars available. Cathedral Stone’s Jahn Repair Mortars is one of them. You can ask for a certified installer of this type of product.
Thanks for the info. I actually just recently purchased the home, so any work that was done improperly was unfortunately done before my time and I’m not sure who did the work or what was executed. If I want to permanently remedy this situation, do you have any recommendations of who to use and what to request? There are also some areas on my stoop with crumbles that need to be repaired, and I want to be sure to get good quality work done.
grand army is correct, it’s efflorescence(solvated salt).
I can see the spider web cracks. You must have done facade repairs recently. The efflorescence is coming from the concrete patching; more specifically, the lime in mortar.
A good patching shouldn’t have spider cracks at first place. Cracks allow penetration deeper into the patch. A good masonry coating could have avoided efflorescence as well.
The solution to your problem is to wash it with phosphoric acid but the problem will re-appear again.
I always specify dutch-man repairs with brownstone.
It’s efflorescence. Google it for more details including Rx.