PDA

View Full Version : Back of concrete steps is bright white? Normal or possibly asbestos?



matt wicson
05-28-2015, 12:59 PM
Hi all, the front concrete steps to my house (built 1949) connects to the joists in our basement. You can see the back of the concrete steps through the basement. The concrete has started to crumble very slowly as I found a small pile of dust sitting on the sill plate. Would concrete that hasn't been exposed to the elements be a brighter white, or is there something likely applied over it like an asbestos coating? I looked to see where the concrete was crumbling from and it appears white as the rest of the concrete surface does.

-Paranoid Homeowner

Billy Stephens
05-28-2015, 05:44 PM
Efflorescence Look Here https://www.google.com/search?q=mineral+deposits+on+concrete+walls&biw=1024&bih=631&tbm=isch&tbo=u&source=univ&sa=X&ei=trVnVdbKEcfToAS15oLwBw&ved=0CC8QsAQ