The Oppo BDP-203 is an excellent high-end 4K Blu-ray disc player, but image quality improvements over cheaper players are tough to spot. Read full review Autoplay: ON Autoplay: OFF
Efflorescence is the stubborn problem that has caused confusion and trouble for masonry since the first time it appeared thousands of years ago on ancient masonry walls. Efflorescence is normally the white, powdery scum that can appear on masonry walls after construction but can also be brown green or yellow, depending on the type of salts.
It's ugly, but in and of itself, it's not a sign of damage to your home. However, efflorescence is a definite sign of humidity. Efflorescence is created as moisture passes through the porous concrete in of your basement walls and into your home. As the moisture passes from your walls into your basement air, it leaves any minerals in the water behind on the basement walls in the form of this white, powdery substance.