While wearing a mask and gloves to protect yourself from both the mold and the bleach carefully apply the bleach solution to the moldy area.
How to kill mold in an attic space.
By far the most popular diy mold killer is bleach.
Get rid of mold contaminated surfaces by using a wet vacuum the type you can fill its tank partially with water to contain mold residue from the contaminated surface wipe the surface with a damp sponge or rag use clean water or wood cleaner.
Mix 1 teaspoon of white vinegar or tea tree oil with each cup of water that you need to attack your mold colony.
Now that you ve prepped the space it s time to attack the mold itself.
Tea tree oil and white vinegar are both completely natural and safe for wood but.
You need to have dedicated dryer vent port and avoid releasing excessive moisture and heat into the closed attic.
These options will only be sufficient if very little penetration of the wood has occurred so if the mold seems more invasive don t use this procedure.
Many people install dryer vent port that opens into the attic which makes the attic warm and damp.
Here are some recommended methods to prevent mold growth.
If your attic mold is limited to a very small area you may be able to use a power sander or a wire brush to remove it.
The epa and other government agencies no longer recommend bleach for doing this.
Bleach is corrosive and nasty to use and it kills only surface mold.
The most effective way to remove mold from hard porous materials such as wood rafters and plywood roof decking is to scrub it with detergent and water while wearing a dust mask and rubber gloves.