how to remove mold from crawl space

How to Remove Mold from Your Crawl Space

Struggling with mold in your crawl space? You’re definitely not alone. Many homeowners face this stubborn issue, which not only threatens the structure of your home but can also pose serious health risks. Fortunately, learning how to remove mold from your crawl space is straightforward with the right steps and precautions. Let’s dive into an effective strategy to get that mold out and keep your home safe and clean.

Removing Mold from Crawl Space

Here is a step-by-step guide to remove mold from crawl space:

Understanding Mold in Your Crawl Space

First things first, let’s understand what we’re dealing with. Mold thrives in moist environments and can spread quickly if not addressed promptly. It not only damages your home but can also pose serious health risks, such as allergies and respiratory issues.

Types of Mold

  1. Aspergillus: Often found on food and in air conditioning systems, Aspergillus can appear in various colors. It’s relatively less harmful but can cause respiratory issues in sensitive individuals.
  2. Cladosporium: This type of mold thrives in both warm and cold conditions, commonly appearing on fabrics and wood surfaces. It typically looks like a black or green speckled fungus and can trigger allergies and asthma.
  3. Black Mold (Stachybotrys): The infamous black mold is toxigenic, meaning it can produce toxins that are particularly harmful. It thrives in wet areas and can lead to severe health problems, including breathing difficulties, persistent headaches, and even memory loss.
  4. Penicillium: Easily recognizable by its blue or green appearance, Penicillium spreads quickly on water-damaged materials. It’s known for causing sinus infections and allergies.
  5. Alternaria: This mold is most commonly found in showers, bathtubs, and below leaky sinks. It’s known for its velvety texture with dark green or brown hairs, and it can lead to allergic reactions and asthma attacks.

Step 1: Suit Up for Safety

Safety first! Before you even set foot in your crawl space, make sure you’re properly equipped. You’ll need protective gloves, a high-quality respirator mask, goggles, and full-body coveralls. These precautions are not overkill; mold spores are hazardous to breathe and can cause serious health issues.

Step 2: Diagnose the Problem

Grab a flashlight and carefully inspect your crawl space. You’re on a reconnaissance mission to determine how severe the mold infestation is. Look for any signs of excessive moisture, leaks, or condensation. All these are red flags that need addressing if you want to tackle the mold effectively.

Step 3: Eliminate Moisture

Here’s where things get hands-on. Removing moisture is critical in the battle against mold. Set up fans and dehumidifiers to dry out the area. This process might take a few days, but patience is key here. If you find any leaks during your inspection, now is the time to fix them. Ensuring that your crawl space remains dry is your ultimate goal.

Step 4: Clean Out the Clutter

If your crawl space has become a storage area, it’s time to rethink that. Remove any items that have mold growth. Porous materials like cardboard or damaged wood should be discarded properly. This step not only clears the mold but also reduces the “food” available for future growth.

Step 5: Clean All Surfaces

Now, let’s get to the core of how to remove mold from your crawl space. Use a mold-killing solution or a mixture of bleach and water (one part bleach to ten parts water). Vigorously scrub the affected areas to remove the mold. This step requires thoroughness and elbow grease, but the effort is well worth it.

Step 6: Apply a Mold Inhibitor

After you’ve cleaned out the mold, apply a mold inhibitor to all surfaces. This will help prevent mold from taking hold again. You can find several effective products at your local hardware store. Apply according to the manufacturer’s instructions for the best results.

Step 7: Keep Your Crawl Space Dry

Your final step in learning how to remove mold from your crawl space is ensuring it stays dry. Continuous use of dehumidifiers and regular checks for leaks can prevent future mold growth. Make it a routine to inspect your crawl space periodically. Prevention is always easier than treatment!


Removing mold from your crawl space can seem daunting, but by following these steps, you can tackle the problem efficiently and effectively. Remember, the key is not just removing the mold but keeping your crawl space dry to prevent its return. Stay vigilant, maintain regular inspections, and ensure good ventilation—your crawl space will thank you by staying clean and mold-free.

Read Also

+ posts

Hi! I'm Edmundas, a devoted minimalist and expert in making the most out of small spaces. Through years of experience in interior design and innovative space-saving solutions, I've mastered the art of transforming compact areas into functional, stylish havens. Here at GotinySpace, I share my insights and tips to help you embrace a simpler, more organized lifestyle. Join me on this journey to discover how less can indeed be more.