wallpaper black blue

 Long before the distinctive odors and black splotches of Stachybotrys manifest to any notable degree, other more insidious molds may develop. Some Penicillium molds thrive in climates with a water activity close to .70. Such growth can be quite extensive before any external clues are provided. However, there may be clues. Look for stains, not black splotches, but very faint red, yellow, blue or purple stains that can be mistaken for a fruit juice stain from an unnoticed spill. The mold stain can be small and circular, large and streaking, or a combination. Such observations will require further scrutiny to determine if there is mold growth under the wallpaper black blue. Look closely for these stains to be associated with areas where the wallpaper black blue has lost adhesion. Mold needs adequate nutrition to survive. wallpaper black blue adhesive can make excellent mold food and once eaten, bubbles appear where the wallpaper black blue no longer sticks. If you see bubbles, but not stains, a more invasive approach is needed. With your wallpaper black blue repair kit handy, use a razor blade to cut the wallpaper black blue and inspect for underlying mold. Anything other than clean wallboard is suspicious. Mold can be many colors and even colorless. So, observe carefully.