MOISTURE CONTROL

The Fortis mini-split system uses two indoor units (heads) connected to one outdoor compressor.

INTEGRATION

The mini-split system ensures the home is well-ventilated by constantly moving air, while the SIPs create a solid and insulated barrier

Blog

September 19, 2024

Debunking the Myths

Moisture and Mold in SIP Homes

When it comes to building with Structurally Insulated Panels (SIPs), there’s a common concern that needs addressing: moisture and mold. Many potential homeowners and builders worry that tightly sealed homes could trap moisture and encourage mold growth. But are these fears valid, or are they based on misconceptions? Let’s explore the myths and facts about SIP homes and mold.

Myth: SIP Homes Trap Moisture and Encourage Mold Growth

Many believe that because SIP homes are airtight, they are prone to moisture buildup, creating an ideal environment for mold. However, this is a misunderstanding of how SIP homes are designed and function.

Myth: SIP Homes Trap Moisture and Encourage Mold Growth

SIP panels are specifically designed to prevent moisture from entering or accumulating inside the structure. The airtight SIP building envelope is the key to controlling moisture.

As explained by Extreme Panel, the low levels of air infiltration in SIP buildings allow incoming air to be carefully regulated through air handling systems. This means that airflow and dehumidification can be managed to ensure the indoor environment stays dry and mold-free.

Why Proper Installation Matters

Proper installation is critical to ensuring your SIP home stays moisture-resistant. Incorrect installation can leave gaps that allow moisture to penetrate, leading to condensation issues. That's why following industry standards like those from ASHRAE (American Society of Heating, Refrigerating, and Air-Conditioning Engineers) is essential for keeping humidity levels in check.

Additionally, SIP homes feature solid wall structures without cavities, where moisture could otherwise condense and cause unseen mold growth. This feature greatly reduces the chances of internal moisture accumulation compared to traditional wood-framed homes, where mold can develop in wall cavities.


Efficient Air Distribution with Fortis

The Fortis mini-split system uses two indoor units (heads) connected to one outdoor compressor. This setup allows the system to cool or heat different zones in the home independently, ensuring even air distribution throughout the house. Because each unit can be controlled separately, it’s possible to maintain optimal temperatures in various parts of the home, ensuring efficient climate control without overworking the system.

Ventilation and Air Quality

Mini-split systems don’t just manage temperature—they also help maintain air quality. When properly installed, the system allows for continuous airflow, pulling stale air out and bringing fresh, conditioned air into the living space. This circulation is key for controlling humidity levels and preventing mold and moisture buildup, particularly when paired with dehumidifiers or ventilation systems.

Integration with SIP Structure

In a SIP home, where airtightness is a defining feature, proper ventilation is essential. The mini-split system ensures the home remains well-ventilated by constantly moving air, while the SIPs create a solid and insulated barrier that prevents uncontrolled air leakage. The two systems complement each other by maintaining a balanced indoor climate without creating conditions conducive to moisture buildup or mold growth.

Dehumidification and ASHRAE Standards

Following ASHRAE standards, the mini-split system’s dehumidification capability helps manage indoor humidity levels. Proper dehumidification ensures that moisture does not condense on surfaces, reducing the risk of mold. By controlling the air exchange and removing excess moisture from the incoming air, the system creates an environment where mold cannot thrive.


Real-World Example: Moisture Control in SIP Homes

Take the example of a SIP home in a humid climate. In this scenario, the air handling system dehumidifies incoming air and maintains optimal humidity levels, preventing condensation from forming inside the walls. This approach has been proven effective, as homes built with SIPs experience far fewer moisture-related issues compared to traditional builds.

A Reliable and Durable Choice

SIPs have proven themselves as a long-lasting, reliable building solution. From homes built in the 1930s that are still standing today to modern homes nearing 30 years of age, the durability of SIPs is unmatched in the industry. With proper moisture management, airtight construction, and the inherent strength of the panels, SIP homes provide homeowners with a strong, resilient, and energy-efficient living environment for decades to come.

If you're considering SIPs for your next construction project, you can be confident in their ability to deliver durability, energy efficiency, and long-term value to your homeowners. Learn more about the benefits of building with SIPs by checking out our FAQ section or explore building code standards on SIP durability.

Discover how Fortis' innovative design and advanced HVAC systems keeps the home comfortable and mold-free.

Contact us today to learn more about creating a healthier living environment with SIPs and efficient climate control.

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Get in touch with us to learn more about Fortis Homes and how we can help your organization achieve your housing goals.

fortis@navigatecommunities.com

888-466-5572

2701 1st Avenue S, Suite 200

Birmingham, Alabama 35233

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