If the mold growth is systemic throughout large portions of the attic it s likely due to an ongoing condensation issue.
Green mold on attic ceiling.
In the attic photograph at left we show a mix of green gray and white attic mold.
However attic condensation is evidence of wet or very humid attic conditions.
Attic mold left unchecked can grow and lead to structural deterioration of attic sheathing and roof structural elements.
When looking for attic mold trace both leak areas and areas of poor ventilation in the attic.
Cladosporium sometimes green other times brown or gray this mold can grow in cool climates as well as warm places and is often found growing on walls cabinets and carpets that have gotten wet.
If it s only in a limited area it might be due to the original construction or a past one time incident mold doesn t fade with time.
Take three percent hydrogen peroxide which can be found at most grocery stores and put it in a new clean spray bottle.
Mold growth beneath the insulation would require a roof leak which you d typically notice on the ceiling inside the home before any real mold growth occurred.
Condensation is the most common cause of mold growth in an attic.
There are various types of mold that appear with a green color but it is most commonly caused by stachybotrys chartarum which is also known as toxic black mold this name can be deceiving because of the reference to the color black but this organism can also grow in a green color as well.
There s an underlying moisture issue that needs to be resolved because mold requires moisture to grow and spread.
There are more than a hundred thousand types of mold and thousands of species of green mold according to neil kao md an allergist in private practice in greenville and spartanburg south carolina.
Condensation occurs on the underside of the roof sheathing not beneath the insulation.
So what does the color green tell you.
Work in small sections from the edges of the.
This mold typically thrives in wet damp areas.
Pour it into a spray bottle shake and spray it onto the mold.
Generously douse the moldy area while wearing a mask and gloves and let the peroxide sit on the mold for at least ten minutes.
Go over the space two or three times to ensure you get all of the mold.
Scrub with a brush or scouring pad.
Let it sit for at least an hour before wiping away mold.
If you need follow up scrubbing combine one teaspoon baking soda with two cups of water.
Aspergillus this mold can appear green yellow brown grey or even white and is often found growing on and inside walls.