How Radon Mitigation Systems Work in Schools & Daycares

Colorado schools and daycares in Denver, Fort Collins, Castle Rock, and surrounding communities face a radon challenge that many administrators overlook until it's too late. Colorado has radon levels five times higher than the national average, and 1 in 2 homes in the state exceed recommended levels. For facilities where children spend hours each day, understanding how a radon mitigation system works is a critical first step toward protecting the people inside.

How Does Radon Get Into School & Daycare Buildings?

Radon is a naturally occurring radioactive gas that forms when uranium in soil and rock breaks down. In Colorado, the geology across the Front Range, from Fort Collins down to Castle Rock, creates conditions where elevated radon is especially common in homes. Commercial buildings like schools and daycares are not immune. Their larger footprints, slab foundations, and complex HVAC systems can make radon entry points harder to identify and control.

Radon enters buildings through several pathways:

• Cracks in foundation slabs and floors: Even small cracks allow radon to seep upward from the soil directly into classrooms and common areas, often without any visible indication that it's happening.
• Construction joints: Where walls meet floors or different building sections connect, gaps can form over time and create consistent entry points for radon gas.
• Floor drains and utility penetrations: Pipes, wiring conduits, and floor drains that pass through concrete slabs are frequent radon entry routes that are easy to miss during a basic inspection.
• Porous concrete blocks: In older school buildings, hollow or porous block walls can absorb and release radon gas directly into interior spaces.
• Crawl spaces: Buildings with partial crawl spaces allow radon to accumulate underneath and migrate steadily upward into occupied areas.

What Are the Health Risks of Radon Exposure for Children?

Children are particularly vulnerable to radon exposure. Their lungs are still developing, and they breathe at a faster rate than adults, meaning they inhale more radon particles relative to their body weight. In schools and daycares across Denver, Parker, and Castle Rock, where children spend six to eight hours a day, even moderate radon levels can compound into meaningful long-term exposure.

Key health risks include:

• Increased lung cancer risk: Radon is the second leading cause of lung cancer in the United States, responsible for roughly 21,000 deaths annually. Children exposed during formative years carry that elevated risk well into adulthood.
• Faster cellular damage: Because children's cells divide more rapidly, radiation from radon decay products can disrupt cellular development at a higher rate than it does in adult tissue.
• Cumulative exposure: Children who attend the same school or daycare for multiple years face years of repeated radon exposure, which compounds health risks significantly over time.
• No immediate symptoms: Radon-related illness does not present with immediate warning signs, making it easy to overlook without routine testing and a properly designed commercial radon mitigation plan in place.

What Types of Radon Mitigation Systems Are Used in Schools?

Not all radon mitigation systems are the same, and commercial buildings require more robust solutions than a typical residential installation. A certified radon mitigation system for a school in Fort Collins, Denver, or Castle Rock must account for larger square footage, multiple foundation types, and complex ventilation configurations.

Common system types include:

• Sub-Slab Depressurization (SSD): The most widely used radon mitigation system in commercial settings. A suction pipe is inserted beneath the foundation slab and connected to a fan that draws radon out before it enters the building. It is highly effective across a range of building sizes.
• Block Wall Suction: Used in buildings with hollow block foundation walls. Suction is applied directly to the interior of the blocks to prevent radon from migrating inward through the wall structure.
• Sub-Membrane Depressurization: Applied in buildings with crawl spaces. A membrane is placed over the crawl space floor, and a fan system pulls radon out from underneath before it reaches occupied areas.
• Ventilation-Based Systems: In some commercial settings, increased fresh air ventilation is used to dilute indoor radon concentrations, often in combination with one of the depressurization methods above.

Who Is Responsible for Installing Radon Mitigation in Schools?

In Colorado, responsibility for radon testing and mitigation in schools typically falls to the school district or the facility's managing organization. State regulations require that commercial radon mitigation contractors hold valid Colorado state certifications, and NRPP certification is widely recognized as the industry standard for qualified professionals working in this space.

For daycare centers and private schools in Denver, Fort Collins, and Castle Rock, facility managers and owners are generally responsible for ensuring testing is conducted and that a proper radon mitigation system is installed when levels exceed the EPA's action level of 4 pCi/L.

In new construction, builders working across the Denver Metro area and along the Front Range are increasingly incorporating radon-resistant construction techniques from the ground up, which can make future mitigation more straightforward and cost-effective.

Regardless of who initiates the process, working with a certified commercial radon mitigation contractor ensures the system is designed and installed to meet both state and EPA guidelines.

How Long Does It Take To Install a Radon Mitigation System in a School?

Installation timelines for a commercial radon mitigation system in a school or daycare vary depending on the size of the building, the number of foundation zones, and the complexity of the ventilation setup. A smaller daycare facility in Castle Rock or Parker might see installation completed in a single day, while a larger school building in Denver or Fort Collins could require two to three days or more.

Pre-installation planning is a significant part of the overall process. A certified contractor will conduct a thorough site assessment, review the building's blueprints, and identify optimal placement for suction points and fan systems before any work begins.

In most cases, scheduling can be coordinated around evenings, weekends, or school breaks to minimize disruption to students and staff. Apex Radon maintains detailed records for every commercial property they service, which streamlines the planning process and keeps future maintenance organized and efficient.

After installation, post-mitigation testing confirms that radon levels have been reduced to an acceptable range.

Protect the Children in Your Facility With a Certified Radon Mitigation System

Apex Radon serves schools, daycares, and commercial facilities across Denver, Fort Collins, Castle Rock, Parker, and the surrounding Front Range communities. With 10+ years of experience, 7,000+ mitigated properties, and 550+ five-star reviews, our certified team is equipped to handle commercial radon mitigation projects of any size. Contact us today to talk with a specialist about testing and mitigation options for your facility.