Is mold on paper harmful?

Author: Mr. Quinten Kub  |  Last update: Saturday, October 25, 2025

Human Health Risks Some molds that grow on library collections pose a health hazard to people. Mold spores are introduced to the human body by inhalation and through small breaks in the skin. Although serious consequences are rare, active mold can cause respiratory problems, skin and eye irritation, and infections.

Can moldy paper make you sick?

The danger aspect is determined by an individual's level of sensitivity as well as the species of mold one is exposed to. Molds that grow on paper can be allergenic, pathogenic, and toxic. There is no way of knowing without spending money on testing which can be expensive.

What should you do if there is mold on paper?

If visible mold is present on paper materials, you will need to throw out, including books, albums and photographs, or craft materials. Food and Food Appliances: Both food and food appliances in your home that has come in contact with mold should be removed and thrown away.

Can moldy paper be saved?

Dealing with Mold-Affected Documents

They can be held indefinitely while frozen. (It is possible instead to air dry damp records. This is usually only recommended for small quantities of papers that have not yet begun to mold.) It is recommended that frozen records then be vacuum freeze dried.

Can you get sick from moldy books?

Yes, book mold can be dangerous, particularly for individuals with allergies, asthma, or weakened immune systems. Mold spores can cause respiratory issues, allergic reactions, and other health problems when inhaled. Key points about book mold:

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Should I throw away moldy books?

If you identify mold or mildew on any of your books, magazines, or paper ephemera, remove them from your collection immediately!

How to tell if mold is toxic?

Toxic black mold growth has a more potent and identifiable smell, like the smell of decay, wet soil, or rot. Visually, it may be greenish-black, grayish-black, slimy, or more furry than other forms of mold or mildew.

Does mold on paper spread?

Of the microbes that may accumulate in documents and books, mold is one of the most damaging because it deteriorates paper and may spread to other documents. By taking the right steps to clean and dry documents as soon as possible, you'll destroy and the microbes and prevent permanent damage.

What kind of mold grows on books?

Molds commonly isolated from moldy books include species of Aspergillus, Penicillium, Cladosporium, Trichoderma, Chaetomium, Stachybotrys, Epicoccum and a number of others. Trichoderma, Chaetomium, and Stachybotrys are strong producers of the enzyme cellulase that breaks down the paper.

Is inactive mold harmful?

It's still viable: Inactive mold spores can remain viable for many years, waiting for the right conditions to grow again. They're just as capable of causing damage and health issues as actively growing mold.

How fast does mold grow on paper?

In high temperatures, mold can begin to grow on wet paper in less than 48 hours.

Is mold an emergency?

It may be time to call in the experts in mold remediation if you've experienced: Allergy or flu-like symptoms that come when you're at home and go when you're out. A musty or damp smell inside your home. Water damage from a recent flood or plumbing leak.

How to clean mold from book pages?

How to Clean Book Pages With Mold
  1. Slide a sheet of waxed paper underneath the moldy page to protect the pages behind it.
  2. Use a soft brush to carefully remove any visible mold.
  3. Dampen a soft cloth with hydrogen peroxide and apply it to the mold.
  4. Dab the stained area with a paper towel until the paper is dry.

Can you get sick from old paper?

Hundreds of types of molds can be associated with paper, and they are the source of numerous allergies. The spores of a few species of mold also cause disease such as histoplasmosis.

How long does it take to get sick from mold exposure?

According to the CDC, people usually experience their first symptoms within 2 to 9 hours of their first exposure. On the other hand, some people could go for weeks or months before feeling sick if their exposure is limited enough. This is why it is also important to check damp, dark areas of your home for mold.

How to tell if your house is toxic?

If you suspect your asthma worsens or is more severe than usual, contact your doctor or medical professional.
  1. Bad Smells In The Home. When there's a bad smell in the home, you can tell. ...
  2. Peeling Wallpaper. ...
  3. Spots On The Wall. ...
  4. Bad Allergies Won't Go Away. ...
  5. Visible Mold Growth. ...
  6. Past Water Damage.

Is it safe to read a book with mold on it?

It is important to note that mold can be dangerous to people with allergies and immune problems and, in some cases, can pose a major health hazard.

How to tell if paper is moldy?

Signs of Mold and Mildew in Documents

Pages in books or sets of documents stick together, particularly along the edges. Discoloration. While it's normal for some types of paper to discolor with time, such as newsprint, mold and mildew create black or brown speckling, as well as yellowing. The presence of a musty smell.

What are symptoms of black mold exposure?

The most common symptoms of black mold exposure include:
  • Sneezing.
  • Coughing.
  • Nasal congestion.
  • Postnasal drip.
  • Red eyes.

What does black mold look like on paper?

The color of the mold can sometimes change as it grows. Black mold can also appear as a dark stain on porous materials like wood, carpet, or paper. It can also develop as a fuzzy growth called black mold spores on clothing, books, or reports. Black mold should be treated as soon as it is identified.

Does wiping mold spread it?

Mold spores spread fast once disturbed. Mold spores float in the air and may land in other areas to begin growing again. While cleaning, you could cause the mold to spread into areas of your property that were previously unaffected.

What is paper foxing?

What are those brown spots on your watercolour or print? They are commonly referred to as 'foxing' patches on the paper, a reaction with moisture caused by mould spores. They may begin as a small and easily ignored blemish, but in time they will only spread and become worse now that they are present.

What does harmless black mold look like?

Although the name implies a uniform coloring, black mold may appear black, dark green, or dark brown. It typically grows as a cluster of round spots with a distinctly wet, slimy appearance. As stated, black mold typically appears fuzzy or furry.

What happens if you breathe in mold for a long time?

Chronic Fatigue: Mold forces your body to work harder, leading to persistent fatigue, especially in those with pre-existing conditions. Lung Issues: Prolonged exposure can cause lasting damage to lung function.

What are the neurological symptoms of mold?

Mold exposure can cause a variety of neurological effects, including headaches and migraines, cognitive impairments, memory loss, confusion, impaired motor skills, depression, and other behavioral changes. Due to mold exposure, people with weakened immune systems may be more susceptible to neurological symptoms.

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