Black mold attic plywood: top 6 prevention tips & best guide
Mold in Attic

Black mold attic plywood: full removal guide

Nestled away from our daily lives, attics are often overlooked, becoming a breeding ground for mold due to their unique environmental conditions. The appearance of black mold on attic plywood surfaces serves as a warning, indicating an issue that requires immediate attention.

In this article on “removing mold from attic plywood,” the causes, signs, and removal of these unwanted intruders will be examined, providing you with the necessary knowledge you need to tackle them.

in attic 11
Image credit:

Causes of mold growth: overview

Insufficient airflow and ventilation provide an environment where moist air remains trapped, creating a breeding ground for mold.

Areas with poor ventilation, such as attics, basements, and crawl spaces, are particularly susceptible, as stagnant air allows moisture to accumulate, leading to high humidity levels that encourage mold growth.

Mold infestations are likely to start when humidity levels rise above 65%. Due to constantly high humidity levels, areas with poor ventilation and inadequate moisture control promote mold growth.

Inadequate insulation can affect indoor air quality and cause temperature changes within the walls of your home.

Condensation occurs when warm indoor air meets cold surfaces. This trapped moisture provides an ideal environment to make mold grow.

Signs of mold growth

The most notable sign of mold growth is the visible mold itself. Often appearing as discolored patches on surfaces, mold can range in color from black, green, and brown to white or even pink, depending on the type of mold.

These patches might be fuzzy, slimy, or powdery in texture. Keep an eye out for mold on your roof sheathing, walls, ceilings, floors, and in hidden places.

Allergic reactions, such as skin rashes, watery eyes, and congestion, are all symptoms of mold exposure.

These symptoms are your body’s response to an external irritant, indicating the presence of mold in your environment.

Frost buildup on roofs, soffit vents, or wood sheathing during cold temperatures can also be the cause of an attic mold problem. This frost buildup should be paid attention to while it is still just forming.

Mold can cause paint or wallpaper to crack or peel when it grows beneath the surface.

If you notice these signs, look into them more because they could be evidence of hidden mold growth.

in attic 12
Image credit:

How to get rid of black mold in 9 simple steps

To completely get rid of dirt and remove mold from the attic space or any other place, follow the detailed steps explained below.

Gather necessary safety equipment

Before you remove mold from attic plywood, it is essential to gather the required safety clothing and equipment that will protect you from potential harm and allow you to work confidently during mold removal.

To begin, wear a long-sleeved shirt and full-length pants to cover as much skin as possible.

This additional layer of defense can significantly minimize the chances of mold spores falling on your skin, reducing the risk of skin irritation or allergic reactions.

Establish containment measures

Containment is about creating a strategic barrier that limits the movement of these tiny but troublesome spores, ensuring they stay confined to the mold-affected area.

Begin by examining the arrangement of your attic and identify entrances, openings, and any potential routes through which mold spores could migrate.

Start the containment process by sealing off these paths. Heavy-duty plastic sheeting, which is readily available at hardware stores, is an excellent choice for this.

in attic 14

Ensure proper ventilation

If the attic is not properly aired, it can accelerate mold growth due to reduced ventilation and increased humidity. Then it is much more difficult killing mold in attic.

As a result, before beginning the mold removal process, it is important to maximize the attic’s ventilation.

Ventilation serves two purposes: it reduces your exposure to mold spores while also helping to reduce the humidity levels that mold thrives on. Before you remove mold, open any available attic windows.

This allows the proper flow of fresh air and the escape of hot air inside.

Assess the mold infestation

Before removing mold, assessing the area is necessary. Molds can come in a variety of sizes and forms with varying degrees of penetration into the affected surfaces.

By evaluating the extent and nature of the attic mold growth, you can ensure you are ready for the attic mold removal process.

Begin the inspection of the attic space by equipping yourself with protective gear and appropriate lighting. Find signs of mold growth even in odd places like the roof sheathing or wooden structures.

Next, carefully inspect the attic plywood surfaces and look for visible attic mold spots, discolorations, stains, and any strange textures.

Attic mold can appear in a variety of colors, such as black, green, white, and even pink. Don’t just check the surface, some molds can also enter the attic plywood, which makes the removal of attic mold more difficult.

Clear the area

Begin by carefully relocating any items stored in the attic. Furniture, boxes, and other belongings should be moved to a safe, mold-free space.

 This precaution prevents attic mold spores from settling on these items and creating potential contamination sources elsewhere.

Remove any dirt or clutter that may be blocking your access to the affected surfaces on the attic plywood, and sweep the attic floor to eliminate any dust, cobwebs, or loose particles that may interfere with the cleaning process before you remove mold from attic plywood.

in attic 15
Image credit:

HEPA vacuuming

Gently scrub the mold-affected areas with a soft-bristle brush, the purpose is to remove any loose attic mold particles from the attic plywood. The bristles of the brush effectively agitate the attic mold without causing damage to the wood beneath.

Work carefully, part by part, paying special attention to corners, edges, and areas with visible attic mold development.

It’s important to note that the vacuum’s filters might become contaminated with mold spores.

Regularly check and replace the filters as needed to maintain the vacuum’s effectiveness when you remove mold from attic plywood.

Prepare the cleaning solution

Begin by choosing an appropriate detergent or mold cleaner. Choose a product that is safe for the specific surface of your attic plywood and has been proven to be effective against attic mold.

A commercial mold remover or a mixture of bleach and water (1:10) can work as a powerful tool against the mold. A spray bottle is the most convenient vessel to conduct the operation.

If you choose a light detergent, make sure it doesn’t include any harsh chemicals that might be harmful to you or the environment.

Pour the cleaning solution into a spray bottle to make the application easier. This allows you to control the amount of solution applied and target specific areas more precisely.

Cleaning and scrubbing

This procedure requires a delicate mix of precision and dedication to guarantee that every corner is taken care of, effectively breaking down the attic mold during the attic mold removal.

Dip a scrub brush or soft-bristle brush into the cleaning solution, being careful not to drench it.

Begin by cleaning a tiny piece of the affected area and apply the solution to the attic plywood in a controlled manner, using circular motions and moderate pressure.

During the attic mold removal, closely observe the surface as you scrub, as the cleaning solution begins to break down the mold. It will loosen it.

Be persistent and patient, aiming at one section at a time, and pay extra attention to places where the mold problem appears to be concentrated.


After you’ve finished washing and cleaning, it’s time to remove the residue of the mold removal solution. Prepare a clean cloth or sponge that has been soaked with water.

Wipe off the cleaned surfaces gently to ensure that no cleaning solution residue remains.

This is particularly important to avoid potential interactions between the cleaning solution and future treatments such as paint.

After rinsing, thorough drying is essential. The mold problem is common in damp environments, so leaving moisture on the attic plywood surfaces could contribute to mold development.

Consider using exhaust fans or opening windows to facilitate the drying process, especially if the attic is prone to high humidity levels.

in attic 16
Image credit:

Prevention tips

  • Control humidity: To prevent mold growth, and keep indoor humidity levels below 65%, dehumidifiers should be used in damp areas like basements and bathrooms.
  • Seal windows: Ensure windows and doors are properly sealed to prevent water infiltration during rain. This plays a significant role in preventing a mole problem.
  • Attic insulation and ventilation: Ensure you have adequate attic ventilation and attic insulation to minimize the chances of having a mold problem. Ridge vents are also recommended because air can get in through the can or ridge vents, they also help remove moldy attic air.
  • Keep surfaces dry: Wipe down wet surfaces as wet insulation also promotes mold growth. Dry surfaces also help when removing mold from attic plywood and in preventing subsequent mold growth.
  • Proper ventilation: Make sure that toilets, kitchens, and other moisture-prone areas have good ventilation. Exhaust fans can be used to remove moist air and reduce moisture buildup.
  • Pay attention to roof leaks: If you notice any roof leaks, attend to them as quickly as you can, as roof leaks are a primary cause of molds (professional assistance is recommended for roof leaks).

Can black mold be dangerous to you?

Mold generally is considered dangerous to both your health and the environment.

It can trigger allergic reactions that range from mild symptoms like sneezing and itching to more severe reactions like asthma.

When should I seek professional assistance?

Knowing when to seek professional help with mold-related issues is critical for ensuring the safety of your living environment.

if you suspect mold is growing behind walls or in other concealed areas, experts or mold remediation contractors can perform more professional inspections and offer solutions.

in attic 17
Image credit:


How do you get rid of black mold on plywood in the attic?

To get rid of mold, remove all the materials close to the affected surface and apply a mold cleaner on the surface.

Can you get black mold out of plywood?

You can remove black mold from plywood by applying a purchased or self-made mold cleaner on the surface.

How serious is black mold in the attic?

The black mold situation is considered serious and should be addressed promptly due to its potential health risks.

Why is the wood in my attic black?

The presence of black wood in your attic could indicate a variety of issues, such as mold growth, water damage, or aging of the wood.


By understanding the signs, causes, and prevention strategies, you’re equipped to detect and address mold growth issues.

By following the steps provided in this article on “how to remove mold from attic plywood” and taking swift action against leaks and moisture, you can counter mold’s attempts to establish a presence in your home. Should you encounter challenges beyond your expertise, don’t hesitate to seek professional guidance.

Leave a Reply

Your email address will not be published. Required fields are marked *