- Mold is a fungus that thrives in moist areas like kitchens and bathrooms.
- Some people can be allergic to mold spores in the air, which can cause allergic reactivity.
- Eliminating and preventing mold growth helps prevent allergic symptoms.
Mold is a common issue many homeowners face, and it can thrive in various parts of one’s house under the right conditions. If you suspect that there may be mold in your home, learning how to test for mold can help provide confirmation. Doing so can help determine next steps and help prevent allergy symptoms.
What is Mold?
Mold is a fungus and a natural part of the environment that can be found indoors and outdoors, especially in moist areas. It can thrive on any organic matter, including clothing, leather, paper, and the ceilings, walls, and floors of homes that are damp [*].
The musty or earthy odor produced by mold is due to the release of volatile organic compounds (VOCs) as it grows and metabolizes organic material.
Some people are allergic to mold, meaning their immune system overreacts when they inhale mold spores — these are microscopic reproductive units of mold fungi that travel and spread through the air.
Various molds spores can trigger allergy symptoms. These mold varieties include alternaria, aspergillus, cladosporium, and penicillium [*].
What Causes Mold Growth in Homes?
High indoor humidity levels, often from poor ventilation, can provide the moisture needed for mold to thrive. If your house is experiencing leaks in its roof, walls, and foundation, the persistent dampness can fuel mold proliferation.
Common areas in houses where mold growth is likely to occur include bathrooms (especially toilet areas), under sinks, crawl spaces, around windows, inside the ducts of HVAC systems, and closets.
Essentially, indoor humidity above 60% creates an environment conducive to mold [*]. You can measure indoor humidity using a hygrometer.
How Can I Tell If I Have Mold in My House?
Seeing visible mold growth is the most obvious sign. Mold can appear in various colors, often in patches of black, green, white, or gray. (Note that color is not a reliable way to identify the specific type of mold, as many species can appear in multiple colors.)
Another indication of mold is a distinctive musty, stale, and earthy odor. You can describe it as similar to the smell of wet socks or rotting wood. Its scent changes along with its growth. Newly formed mold tends to have a milder odor compared to more established colonies.
There’s a good reason to suspect mold if you have household leaks and you (or other occupants in your home) are experiencing allergic symptoms like congestion, sneezing, itchy nose or eyes, and runny nose. This is especially true if symptoms tend to worsen when you’re at home.
How Can I Prevent Mold from Growing in My House?
Preventing mold growth in your house involves controlling moisture and creating an environment that is inhospitable to mold.
Some effective prevention tips include:
- Keep indoor humidity levels below 60%. Use a dehumidifier in damp areas like basements and bathrooms, especially during humid weather.
- Install exhaust fans in bathrooms, kitchens, laundry rooms, and other areas prone to moisture.
- Check for and repair any leaks in plumbing, roofs, or windows immediately.
- See to it that rainwater and snowmelt are directed away from your home's foundation. Strategies include regularly cleaning gutters and extending downspouts.
- Avoid overwatering indoor plants, as excess moisture in soil can promote mold growth.
- Consider using mold-resistant paints, drywall, and insulation in areas where moisture levels are higher, such as bathrooms and basements.
- Regularly clean and dry areas prone to dampness, such as shower walls, bathtub surrounds, and sinks.
- Consider using air purifiers with HEPA filters to help remove mold spores and other allergens from indoor air.
Regular maintenance and vigilance are key to maintaining a mold-free environment and reducing the likelihood of allergies at home.
The Bottom Line
Mold is one of many irritants that can trigger allergic reactions. Eliminating mold contributes to clearer breathing and improved well-being for you and your family.
Suffering from persistent sneezing, nasal congestion, itchy eyes, and other frustrating symptoms? Choose Allermi for effective and comprehensive treatment of allergic rhinitis caused by mold exposure.
References:
- Mold Allergy - Symptoms, Prevention, and Treatment. (2024, April 19). Asthma & Allergy Foundation of America. https://aafa.org/allergies/types-of-allergies/mold-allergy/
- Mold Course Chapter 2: | US EPA. (2024, January 2). US EPA. https://www.epa.gov/mold/mold-course-chapter-2
- Allergic Bronchopulmonary Aspergillosis (ABPA) Symptoms, Diagnosis, Treatment & Management. (n.d.). https://www.aaaai.org/conditions-treatments/related-conditions/allergic-bronchopulmonary-aspergillosis
