Professional Mold Treatment Services

Visible microbial growth in a crawl space often indicates excess moisture beneath the home. United Structural Systems provides services designed to address visible microbial growth while identifying the moisture conditions contributing to its development. Our team provides targeted surface cleaning and treatment to address visible growth, like mold and fungi, while helping homeowners better understand the conditions affecting their crawl space.

We Are Dependable.
We Are Local Experts.
We Are USS.

Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
Construction worker operating heavy machinery during excavation and infrastructure development at an active job site
Construction worker operating heavy machinery during excavation and infrastructure development at an active job site

Signs Your Home Needs Mold Treatment

Visible microbial growth often develops when excess moisture remains beneath the home over time. Recognizing the warning signs early can help homeowners address moisture-related concerns before they become more extensive.

Common signs include:

  • Dark spots or patches: These often appear along organic surfaces like your floor joists. You will typically notice these structural discolorations spreading across raw wood framing as moisture builds up beneath the home.
  • Musty odor: A persistent, earthy smell that lingers even after surface cleaning. This unmistakable scent indicates that microbial organisms are actively colonizing hidden, unvented areas beneath your living spaces.
  • Water damage: Past moisture intrusion, damp insulation, or leaking plumbing fixtures below grade. These unresolved moisture issues create an ideal breeding ground for spores if left unaddressed.
  • Visible mold growth on household items: Spores forming on storage boxes or personal items. Belongings kept in damp environments will quickly collect surface growth and require immediate environmental correction to salvage them.
  • Condensation on windows or walls: Heavy indoor humidity collecting on cold household surfaces. This visible moisture accumulation signals that your home's humidity levels are dangerously elevated and require a dedicated management system.
  • Health concerns: Some homeowners notice respiratory irritation, allergy symptoms, headaches, or other indoor air quality concerns when excess microbial growth is present beneath the home.

If you notice these signs, scheduling a professional inspection can help identify moisture conditions contributing to visible microbial growth. You can also review our service areas to find the location nearest you.

Frequently Asked Questions

What are the health risks of crawl space mold (microbes) ?

Microbial growth in a crawl space should be eliminated as soon as it is discovered. Air within the crawl space travels upward, which means a crawl space with mold spores leads to unhealthy air within the home. Some health issues caused by microbial growth in the crawl space include: increased allergy symptoms, difficulty breathing, eye irritation, respiratory disease, aggravated asthma, nasal congestion, headaches.

How do you prevent mold and mildew in a crawl space?

If you have a crawl space that is damp, humid, and musty, then you have a problem. Here are a few things you can do to prevent microbial growth in your crawl space.

  • Encapsulate the crawl space: One of the best ways to prevent microbial growth in your crawl space is to install an encapsulation system in your crawl space. A thick vapor barrier is installed to cover the dirt floor of the crawl space and sealed to the foundation walls along the edges. This creates a barrier between the soil and the crawl space air that prevents moisture from evaporating into the crawl space.
  • Install a dehumidifier: A dehumidifier is another way to help prevent microbial growth in your crawl space. A dehumidifier is a device that removes moisture from the air. By removing the moisture from the air, a dehumidifier can help keep your crawl space dry and free of microbial growth.
  • Install a drain system with sump pump: Install an interior drain system with a sump pump to collect and remove ground water from your crawl space or basement.

If you have a crawl space that is damp, humid, and musty, then you need to have it inspected by a licensed professional who can help you put a plan in place to prevent mold growth in the crawl space.

What are common warning signs of mold and fungal growth in crawl spaces?

Microbial growth in a crawl space is not something to take lightly. The microbial growth in your crawl space can cause a number of problems for your home and your health. If you or your family members experience these symptoms, you may have mold problems in the crawl space:


If you notice any of these signs in your crawl space, then you need to have it inspected by a licensed professional. The longer you wait to address the problem with mold remediation, the worse it will get.

How do you clean a crawl space?

If someone in your household suffers with respiratory problems, there are a few things you can do to help prevent microbial growth in the crawl space, which could be the root cause:

  • Remove any wet or damp insulation
  • Remove any standing water by installing a sump pump and drain system
  • Clean the crawl space with a solution that fights microbial growth
  • Seal any cracks or gaps in the crawl space  
  • Remove any debris or clutter
  • Remove any mold or mildew growth and treat the affected areas
  • Replace any decaying wood
  • Encapsulate the crawl space and install a dehumidifier

Mold, mildew, microbial, or fungal growth in a crawl space is a severe problem that can cause many problems for your home and your health. If you have a crawl space that is damp, humid, and musty, then you need to have it inspected by a professional licensed in microbial growth.

Common Causes of Mold Growth

Microscopic spores are a natural part of the outdoor environment, but they turn into a major household problem when they find the right conditions in your crawl space. High humidity levels combined with darkness and an organic food source allow these organisms to replicate rapidly. When warm, moisture-laden air enters an unsealed crawl space, it condenses on cooler wood framing and other structural components. 

Over time, prolonged moisture exposure can contribute to wood deterioration and other moisture-related concerns beneath the home. Partnering with a specialized mold treatment company allows you to identify these environmental vulnerabilities before they escalate.

Image supporting the Crawl Space Repair page – United Structural Systems
Construction worker operating heavy machinery during excavation and infrastructure development at an active job site

Our Mold Treatment Process

Our microbial growth treatment process focuses on cleaning visible microbial growth from crawl space wood framing and structural components. During the inspection, our team also evaluates the moisture conditions contributing to the problem and may recommend crawl space encapsulation, dehumidification, or other moisture management solutions to help reduce the conditions that allow microbial growth to return. 

R.T.E. Mold Prevention Treatment Plan

Our most effective mold prevention treatment plans include three steps. Once we inspect the crawl space thoroughly for microbial growth and discover anything from black mold and mildew to other types of fungal growth, we will design a customized repair plan to:

  • Remove the microbial growth
  • Treat the area for microbial growth
  • Encapsulate the crawl space

This three-step process is designed to treat visible microbial growth and help reduce the conditions that contribute to its return. Cleaning visible microbial growth alone will not help reduce the conditions that contribute to its return. Changing the environment where microbial growth thrives is one of the most effective ways to help reduce recurring microbial growth. 

By combining treatment with crawl space encapsulation, homeowners can better manage the moisture conditions that contribute to recurring microbial growth.

Construction worker operating heavy machinery during excavation and infrastructure development at an active job site
Construction worker operating heavy machinery during excavation and infrastructure development at an active job site

How Moisture Control Helps Prevent Mold

Because microbial growth depends on excess moisture, long-term prevention often involves addressing the conditions that allow moisture to accumulate beneath the home. Depending on inspection findings, recommendations may include crawl space encapsulation, vapor barriers, dehumidification systems, or drainage improvements designed to help manage moisture over time.

Schedule a Free Mold Treatment Inspection

If you've noticed visible microbial growth, musty odors, or other signs of excess moisture, contact United Structural Systems today to schedule a professional crawl space inspection. Our team will evaluate the affected areas, identify potential moisture sources, and discuss available treatment and moisture management options for your property. We also offer flexible payment options for qualifying projects.

We want to do everything we can to help you turn your crawl space into a healthy space.

Construction worker operating heavy machinery during excavation and infrastructure development at an active job site
CUSTOMER REVIEWS

See what customers have to say about working with USS.

Hundreds of 5-Star Reviews

Our customer reviews speak for themselves.

"The crew that has worked on our house has been top-notch...I appreciate the integrity, speed of feedback, and quality of work provided by all who have worked with us."
Chris
 
“Robert Elam with USS is a wealth of knowledge and an incredible asset to all professionals that need this level of expertise in their corner.”
Monte Mohr
Owner/Realty ONE Group Music City
"I have rarely dealt with any company that comes close to USS in the quality of work they do, and in the honesty, ethics, character, and integrity of their company, staff, and repairmen."
Sandra
"The warranty and price were the best in the industry and we had 3 quotes. I highly recommend USS and Evan."
Yvonne P.